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Engineers Explain Why the Galaxy Note 7 Caught Fire (digitaltrends.com)

Engineers with manufacturing technology company Instrumental tore apart a Galaxy Note 7 to try and figure out what may have caused some devices to overheat and explode, causing Samsung to recall and eventually cancel all Galaxy Note 7 devices. In their damning new report, the engineers discovered the root of the problem appears to be that the battery is too tightly packed inside the body of the Note 7. Digital Trends reports: They discovered the battery was so tightly packed inside the Galaxy Note 7's body that any pressure from battery expansion, or stress on the body itself, may squeeze together layers inside the battery that are never supposed to touch -- with explosive results. Batteries swell up under normal use, and we place stress on a phone's body by putting it our pocket and sitting down, or if it's dropped. Tolerances for battery expansion are built into a smartphone during design, and Instrumental notes Samsung used "a super-aggressive manufacturing process to maximize capacity." In other words, the Galaxy Note 7 was designed to be as thin and sleek as possible, while containing the maximum battery capacity for long use, thereby better competing against rival devices such as the iPhone 7 Plus and improving on previous Note models. The report speculates that any pressure placed on the battery in its confined space may have squeezed together positive and negative layers inside the cell itself, which were thinner than usual in the Note 7's battery already, causing them to touch, heat up, and eventually in some cases, catch fire. Delving deeper into the design, the engineers say the space above a battery inside a device needs a "ceiling" that equates to approximately 10 percent of the overall thickness. The Galaxy Note 7 should have had a 0.5mm ceiling; it had none.

289 comments

  1. Shocking by Anonymous Coward · · Score: 1

    Absolutely shocking they cut tolerances to the minimum possible, not the minimum necessary....

    1. Re:Shocking by Anonymous Coward · · Score: 0

      Not just minimum. Below minimum or none at all.

    2. Re:Shocking by FatdogHaiku · · Score: 5, Funny

      Not just minimum. Below minimum or none at all.

      Intolerant tolerances will not be tolerated!

      --
      You have the right to remain sentient. If you give up the right to remain sentient, you will be elected to public office
    3. Re:Shocking by unixisc · · Score: 1

      I know that QA usually looks at production, but do/should they look at design? Yeah, they'd need the capability to do that i.e. have people who are design experts who can review a design from outside and advise on whether the design rules are too tight or not? I know that in the journey towards cost-reduction, they may not exist, but a group like them could have saved this product line from becoming the fiasco that it did

    4. Re:Shocking by war4peace · · Score: 0, Troll

      Stop quoting from the Quran!

      --
      ...gis sdrawkcab (usually not responding to ACs; don't bother posting as AC)
    5. Re:Shocking by Tablizer · · Score: 2

      Intolerant tolerances will not be tolerated!

      You darn Social Tolerance Warriors! The Mobile Media has lied to you snowflakes! That's not fire, that's his hair.

    6. Re:Shocking by Anonymous Coward · · Score: 0

      Courage

    7. Re:Shocking by Anonymous Coward · · Score: 0

      Professional engineers do this. Basically you have to bring them in when you are making something that has a high likelihood of killing someone if you make a bad design. Elevators, buildings, cars, et cetera

      I'd say hire engineers who know how to make things, as opposed to just someone run through a degree mill. I went to school for electrical engineering, and I did not get my degree. I did, however, design a proper overdrive pedal with 3-way EQ for a class project. I was the worst student by far but dammit mine was the only one that worked, and it sounded sick a hell when we put a guitar to it.

      You can give a monkey a diploma, but you can't diploma a monkey. Or something like that.

    8. Re:Shocking by Anonymous Coward · · Score: 0, Informative

      I thought that was in the Bible. Or maybe the Torah.

    9. Re:Shocking by Anonymous Coward · · Score: 0

      Sounds more like /r/The_Donald to me...

    10. Re:Shocking by execthis · · Score: 1

      The couple millimeters that cost Samsung $billions.

    11. Re:Shocking by LesFerg · · Score: 4, Insightful

      I don't understand the obsession with thinness.
      Ever since my phone was less than 4cm thick I have been quite happy. What is this need to keeping shaving millimeters off?

      --
      If I had a DeLorean... I would probably only drive it from time to time.
    12. Re: Shocking by Anonymous Coward · · Score: 0

      Excellent question that will go unanswered. My iPhone5 in a LifeProof case is close to 12mm? And just about the perfect size to grip. I found the 6 too thin and slippery by itself and too big in its case.

    13. Re:Shocking by Anonymous Coward · · Score: 1

      No kidding. Stop the thinsanity. Give me a thicker phone with ra much longer battery life! I just ordered a battery case for my whiz-bang phone that's actually thinner than I want.

    14. Re:Shocking by Dutch+Gun · · Score: 3

      Because unlike geeks who are often happy with purely functional devices, many consumers also want their phones to be sleek and stylish. And there are many, many more of them than there are of us. It's the same reason phones don't have SD cards or replaceable batteries anymore. We're no longer the target audience.

      I've heard these people also tend to buy very expensive clothes that are no more functional than clothes that cost 1/10th the price. Crazy, huh?

      --
      Irony: Agile development has too much intertia to be abandoned now.
    15. Re:Shocking by Anonymous Coward · · Score: 0

      Phones have been sleek and stylish for years already.

    16. Re:Shocking by Dutch+Gun · · Score: 4, Insightful

      Phones have been sleek and stylish for years already.

      Fashion isn't logical.

      --
      Irony: Agile development has too much intertia to be abandoned now.
    17. Re: Shocking by Anonymous Coward · · Score: 0

      Nerds have never been a target audience, except for movies nobody saw and TV shows cancelled after one seasons. Phones were made that way because of necessities dictated by technological limitations.

    18. Re:Shocking by HornWumpus · · Score: 4, Informative

      On the other hand, you have EEs like me.

      Engineering runs a spectrum. From near cookbook, long practiced, design processes owned by PEs to prototypes hacked up with three opamps, a FPGA, a breadboard and a coat hanger.

      Design of consumer product batteries is 'near cookbook long practiced'.

      Even I could do it. Samsung wouldn't have given me the authority to tell the PHB they _needed_ volume Y for X mWh. I guarantee there was an Engineer or ten that knew this was a bad idea, but couldn't penetrate the layers of management between him and the person dictating required features.

      --
      John McAfee 'It was like that time I hired that Bangkok prostitute; to do my taxes, while I fucked my accountant'
    19. Re:Shocking by war4peace · · Score: 3, Insightful

      Looks like I made a politically incorrect joke and got someone offended.
      What has the world become...

      --
      ...gis sdrawkcab (usually not responding to ACs; don't bother posting as AC)
    20. Re: Shocking by LanceMcGrath · · Score: 5, Insightful

      It is, but not logical in that way. Fashion demonstrates that you can do something other people can't - whether it's spend more money, wear something that is inconvenient because you don't have to work, etc. What it's definitely not is about "getting something done efficiently". Quite the contrary, and hence the assumption of a lack of logic.

    21. Re: Shocking by Anonymous Coward · · Score: 0

      A licensed professional engineer would have been bound by their professional code of ethics to hold public safety paramount above all else, even if it hurt their career by doing so.

      So what exactly happened here? Were there no professional Engineers involved with the design, or did the professional engineers who were involved violate their professional code of ethics?

    22. Re:Shocking by Rande · · Score: 2

      To paraphrase, a mobile can never be too expensive or too thin.

    23. Re:Shocking by subreality · · Score: 3, Interesting

      People perceive high-density products as high-quality, and low-density products as cheap plastic crap. Numerous products have included weights for this reason... take a look inside your mouse. People want their phones and laptops to be light so they don't have a brick in their pocket or backpack. Light * high density = low volume. They don't want to reduce the screen size, and bezels are already minimized, so the only option to reduce volume is to make it thin. Of course, once they make it thinner the advertising department will hype that feature, but the real driver is density.

    24. Re:Shocking by gweihir · · Score: 1

      Management failure. First, they likely overruled engineering and second, they likely hired engineers that did not protest enough and/or were not able to explain to management that this could not go well. And it seems pretty much like this design would have failed in any case, no way around that. Stupid and arrogance combined, like in so many cases when things really go wrong.

      --
      Most ACs are not even worth the keystrokes to insult them. Be generically insulted by this and ignored otherwise.
    25. Re:Shocking by gweihir · · Score: 1

      Any sane design process includes an independent design review. I do this regularly for software security aspects. Electronics engineering done right is no different, especially when you are going to produce so many units and so much rides on them. Sure, if it is just a non-critical component, that cannot do much damage and is produced in small numbers, you can verify the design by just trying it out, but not in cases like the Galaxy Note 7. Not having that design review, using people that are not competent or ignoring the results is a huge management failure.

      --
      Most ACs are not even worth the keystrokes to insult them. Be generically insulted by this and ignored otherwise.
    26. Re: Shocking by Anonymous Coward · · Score: 0

      Just like modern software writers. Happy path all the way. Not even a shred of self criticism or analysis. Does it work at all? Yes...ship it.

      No thought for failure modes, handling problemw, etc.

      I'm sure there was a not 20 something engineer there who pointed out this problrm and probably got told he's not a "team player" or some other corporate crap.

      One thing I love though is that unlike with software where you merely need to convince an increasingly stupid customer base that your massive flaws are no big deal, when you try to break the laws of physics you will be punished by the laws of physics.

    27. Re:Shocking by InfiniteLoopCounter · · Score: 3, Insightful

      Phones have been sleek and stylish for years already.

      But this one is really hot off the shelves. An absolute blast to use.

    28. Re:Shocking by bazorg · · Score: 1

      And yet if you put an iPhone 4 next to a more modern phone, the iPhone 4 will look chunky and dated. There is an expectation of improvement, and the size of phones has always been a factor.

    29. Re:Shocking by Anonymous Coward · · Score: 0

      I was happy to loose the antenna that was sticking out post-Nokia 3330...

    30. Re: Shocking by Anonymous Coward · · Score: 1

      That is in the US. There isn't an ethics code in many other countries.

      Plus, lets be real here. If you were to have your career destroyed, or push out a potentially unsafe product, what would you choose? It is nice to be able to keep a roof over your head and not have to subject your family to being on the streets...

    31. Re: Shocking by mlts · · Score: 2

      What I don't get is that this is Samsung. This is a company that makes tanks and arguably produces some of the best conventional weaponry the world has seen.

      They have engineers that know what they are doing. I know this sounds sarcastic, but Samsung has a very good rep in general. It makes me wonder how this happened, especially with a product that has so much visibility to the world. They would have been far better off making up the slight gap for battery tolerances by throwing in some expanded KNOX management features for the enterprise, or perhaps a model so people can have an unlocked bootloader to get more of the geek developers onboard.

    32. Re: Shocking by Anonymous Coward · · Score: 0

      Losing your license for unethical conduct seems like a pretty good way to lose your career as well.

      In every jurisdiction I'm aware of, licensure requires adherence to a code of ethics or code of conduct. I'm aware of commonwealth nations, germany, the US, it appears the European Federation of National Engineering Associations...

      Self regulation is a hallmark of a profession, versus a mere occupation. It's the difference between a janitor and an engineer or doctor.

    33. Re:Shocking by aardvarkjoe · · Score: 2

      And yet if you put an iPhone 4 next to a more modern phone, the iPhone 4 will look chunky and dated.

      Only because you're the kind of person that believes the marketing hype about thinner == better.

      --

      How can we continue to believe in a just universe and freedom to eat crackers if we have no ale?
    34. Re: Shocking by HornWumpus · · Score: 1

      Show me the PEs at VW losing their tickets?

      --
      John McAfee 'It was like that time I hired that Bangkok prostitute; to do my taxes, while I fucked my accountant'
    35. Re:Shocking by Bitbeisser · · Score: 1

      I don't understand the obsession with thinness. Ever since my phone was less than 4cm thick I have been quite happy. What is this need to keeping shaving millimeters off?

      +1 While 40mm thick would actually bother me, some of the recent developments of those thin phones are simply ridiculous, probably because they can't come up with anything really useful to distinguish them from their competitors. So they start competing with gimmicks like how thin it is. Bending iPhone anyone? Sorry, rather keep/include (micro)SD card slots and 3.5mm earphone jacks, that makes such devices far more usable than making it another mm thinner,..

    36. Re: Shocking by Agripa · · Score: 1

      A licensed professional engineer would have been bound by their professional code of ethics to hold public safety paramount above all else, even if it hurt their career by doing so.

      So what exactly happened here? Were there no professional Engineers involved with the design, or did the professional engineers who were involved violate their professional code of ethics?

      That sure worked for Challenger.

    37. Re: Shocking by Anonymous Coward · · Score: 0

      I don't even like slim phones . always put something like a case or something extra so I can feel i'm actually holding something and feel it's not gonna break

    38. Re:Shocking by Anonymous Coward · · Score: 0

      I saw the politically incorrect, but where was the joke?

    39. Re: Shocking by Anonymous Coward · · Score: 0

      Well, it's not like there's one crack engineering team at Samsung running around designing avionics, self-propelled howitzers, chemical processing technology, TVs, and mobile phones. There are many teams with different levels of expertise, and different managers with different levels of ability.

    40. Re:Shocking by cwsumner · · Score: 1

      Fashion is an old scam dreamed up by the French clothing industry in the 1700's. Or maybe by someone else long before that...

      They needed a way to convince people to buy new clothes when the old ones had not worn out, yet. They discovered that by making small changes, and a lot of fast talk, they could do it! And there are a new batch of suckers every generation! ;-)

    41. Re:Shocking by robinsc · · Score: 1

      What do you use the coat hanger for ?

      --
      Linkedin http://in.linkedin.com/in/robinsaikatchatterjee
  2. I.e. Samsung acted recklessly for profit by OneHundredAndTen · · Score: 5, Interesting

    This is bad. Very bad. If substantiated, the lawsuits against Samsung are going to be epic.

    1. Re: I.e. Samsung acted recklessly for profit by Anonymous Coward · · Score: 0

      I'm preparing a lawsuit as we speak. Easy money!

    2. Re:I.e. Samsung acted recklessly for profit by delt0r · · Score: 1

      Only in America. The lawyers are laughing all the way to bank.

      --
      If information wants to be free, why does my internet connection cost so much?
    3. Re:I.e. Samsung acted recklessly for profit by Kozar_The_Malignant · · Score: 1

      Samsung is already on the hook according to the legal doctrine of res ipsa loquitor. Mobile phones aren't supposed to catch fire in you pocket. If they do, especially if lots of them do, the rebuttable presumption is that it's the manufacturer's or designer's fault. While there may be finger pointing between manufacturer and designer, California product liability law allows you to go after any link in the chain of commerce that is most convenient for you. In other states or countries, YMMV.

      --
      Some mornings it's hardly worth chewing through the restraints to get out of bed.
    4. Re:I.e. Samsung acted recklessly for profit by mkoenecke · · Score: 4, Informative

      Different concept. Res ipsa loquitur means "the thing speaks for itself." It means no interpretation of a fact or piece of evidence is necessary. You're thinking of the concept of "strict product liability:" when a product causes damages, one does not need to prove actual negligence, just that the product caused the damage.

      --
      TANSTAAFL
    5. Re:I.e. Samsung acted recklessly for profit by rmdingler · · Score: 1

      The important takeaway here, if we're keeping things in perspective, is Thank Goodness! quality and safety are hardly ever compromised by manufacturers for fun and profit.

      --
      Happiness in intelligent people is the rarest thing I know.

      Ernest Hemingway

    6. Re:I.e. Samsung acted recklessly for profit by 93+Escort+Wagon · · Score: 1

      The important takeaway here, if we're keeping things in perspective, is ...

      You're holding it wrong. * Mic Drop *

      --
      #DeleteChrome
    7. Re:I.e. Samsung acted recklessly for profit by Obfuscant · · Score: 1

      Different concept. Res ipsa loquitur means "the thing speaks for itself."

      But Thing never spoke for itself. It was Cousin Itt who spoke for itself. Thing could only knock. Geeze, don't you know nothin'?

    8. Re: I.e. Samsung acted recklessly for profit by Anonymous Coward · · Score: 0

      Did anybody get injured from that? No? Ok. Apples and oranges.

    9. Re:I.e. Samsung acted recklessly for profit by Chmarr · · Score: 4, Informative

      Yes, that's the translation of the latin, but it's use in law is correct as to "accident implies negligence". Please read beyond the first sentence in Wikipedia.

    10. Re:I.e. Samsung acted recklessly for profit by MrKaos · · Score: 2

      Yes, that's the translation of the latin, but it's use in law is correct as to "accident implies negligence". Please read beyond the first sentence in Wikipedia.

      You don't get modded up for deeper knowledge, only the perception of it.

      --
      My ism, it's full of beliefs.
    11. Re:I.e. Samsung acted recklessly for profit by Uberbah · · Score: 1

      You're holding it wrong. *Hateboi Wankery*

      FTFY. Five Samsung devices on the first page alone.

      Now mic is dropped.

    12. Re:I.e. Samsung acted recklessly for profit by Uberbah · · Score: 0

      You mean, only in America do the gullible believe that lawyers making some money is worse than letting monied interests get away with screwing over consumers, and instead they should get away scot free with their incompetence, negligence and putting people at risk.

      Gosh, Americans are stoopid.

    13. Re:I.e. Samsung acted recklessly for profit by HornWumpus · · Score: 2

      The people who's phone's caught fire are already lawyered up.

      How much do you think someone deserves for being put at risk? For a couple of weeks?

      Shareholders?

      --
      John McAfee 'It was like that time I hired that Bangkok prostitute; to do my taxes, while I fucked my accountant'
    14. Re:I.e. Samsung acted recklessly for profit by Anonymous Coward · · Score: 0

      > lawsuits against Samsung are going to be epic

      They replaced then took back all phones in a few weeks. What are you going to sue them for?

    15. Re: I.e. Samsung acted recklessly for profit by Anonymous Coward · · Score: 0

      Americans have been conditioned to believe all personal lawsuits are always bad and have no merit past personal greed by a corporate media with vested interests in promoting it. Lawyers assisting in such endeavors are similarly branded, being, you know, the only entities that can hold corporations accountable in an era of "business friendly" government.

      Funny how the libertarian idiots always say we don't need regulations because if a company does bad they can have their reputation damaged and be sued, and when that exact thing happens they start screaming about it.

      Same way and same reason far too many believe it's fine for capital to organize but not labor, that maximizing profits is good but maximizing wages is somehow bad, and who never question things like how businesses routinely absorb or otherwise deal with cost increases for supplies, materials, and rent but claim any labor cost increase at all will put them out of business.

    16. Re:I.e. Samsung acted recklessly for profit by thegarbz · · Score: 1

      This is bad. Very bad. If substantiated, the lawsuits against Samsung are going to be epic.

      And they'll go no where. Samsung issued a recall. They offered refunds. They offered compensation.

      Suing after the fact will serve only to line the pocket of a lawyer or two.

    17. Re:I.e. Samsung acted recklessly for profit by mobby_6kl · · Score: 1

      It's of course bad that (very few of) their phones catch fire, but meh.

      Unless it is shown that they knew that there was a higher risk of fire and continued regardless, at worst it looks like they tried to make a better phone and messed up something that would've been very difficult to catch in testing as it occurs with very low frequency. Samsung recalled the device and issued refunds or replacements, so I think it was pretty reasonably handled.

    18. Re: I.e. Samsung acted recklessly for profit by Uberbah · · Score: 1

      Pretty much. Back in 2004, the right-wing was going all in on ratfucking John Edwards for bringing "jacuzzi suits" in court, and winning millions from a jury. Except the case involved a girl who had her guts hydraulically sucked out of her body by a faulty pool drain, one the manufacturer knew was dangerous but DGAF because fixing it would have cause a few bucks.

      Do wingers think the parents gave two shits of a flying fuck that Edwards got a good chunk of money in the process? Hell no, they would have sooner taken that companies money and burned it in the street rather than let them have it.

    19. Re:I.e. Samsung acted recklessly for profit by Uberbah · · Score: 1

      The people who's phone's caught fire are already lawyered up.

      Uh huh. And all of them did so 100% on their own dime, without a single one agreeing to take the case in exchange for part of the settlement. Sure.

      How much do you think someone deserves for being put at risk? For a couple of weeks?

      How much if it was your family at risk? As the AC points out above, Randian Wackjobs are so, so quick to say we don't need government regulations because negligence and incompetence may be handled through lawsuits in court. Until there's actually a suit, at which point you drag out the fainting couches at the prospect of a business being held accountable for their actions.

    20. Re:I.e. Samsung acted recklessly for profit by delt0r · · Score: 1

      Yes you are. Look at the payouts from class action lawsuits. You get, what $30 bucks back. Meanwhile the lawyers walk away with millions in "fees" cus well fees.

      --
      If information wants to be free, why does my internet connection cost so much?
    21. Re:I.e. Samsung acted recklessly for profit by Uberbah · · Score: 1

      Yes you are. Look at the payouts from class action lawsuits. You get, what $30 bucks back. Meanwhile the lawyers walk away with millions in "fees" cus well fees.

      Nah, you're still the useful idiot for regurgitating corporatist propaganda. Because you got that $30 with zero effort or risk on your part, and the company responsible had to pay for their actions that actually affected their quarterly dividends. Don't like it? Then spend thousands to tens of thousands of your own dollars to hire your own lawyer to file your own lawsuit. But be prepared to walk away with nothing but a huge bill from the law firm.

      And then, even if you win, isn't going to do dick to change corporate behavior. Guess what will do that, particularly where consumers are nickel and dimmed? Class action lawsuits, that's what.

  3. Why air gaps? by Tablizer · · Score: 2

    Why are there not physical insulators between the "risky" parts instead of merely air gaps? I'm not a psychical* engineer, so am I missing something? Do physical protection layers reduce cooling or something?

    * I don't mean I'm virtual, but that I don't engineer physical stuff. Software.

    1. Re:Why air gaps? by Anonymous Coward · · Score: 1

      There's an electrolyte layer between the poles of the battery, which is stabilised by polymers.
      But when the pressure gets too high, this layer can get pinched in places, creating an effective short between the poles. The still functional parts of the battery then discharges over this short, with a higher current than it was designed for in the first place, which causes more heating and even higher pressure.

    2. Re:Why air gaps? by EndlessNameless · · Score: 1

      Physical separation adds weight and cost. There is no need for the extra material if you ensure an adequate gap, so why include it all? It's wasteful.

      I doubt the battery company only sells to Samsung, so other products are presumably using the same components safely. Samsung did the risky/bad engineering by shrinking the battery compartment as much as they did.

      Even with physical separation, the battery still needs room to expand. Perhaps your failure mode would be strained PCBs and cracked soldering instead of fire---but you would still have failures. Regardless of what batteries they used, Samsung made a mistake.

      --

      ---
      According to the latest ruleset, this post should be modded as Vorpal Flamebait +5.
    3. Re:Why air gaps? by Tablizer · · Score: 1

      Does the pressure actually create a hole(s), or merely push the electrolyte layer so hard that the distance between the parts with current grows temporarily too thin and hot?

      And, why didn't testing catch this? Wouldn't one typically squeeze some test phones at different angles until they actually go bad to see where the thresholds and failures are? Or did manufacturing put in bad distances, or design left tolerances unrealistic for manufacturing to meet?

      I realize you weren't there, I'm just asking what's typically done or expected in such design labs.

      I wonder if marketing pressure triggered a VW/Wells-Fargo-like situation where there's pressure on the engineers to cheat by skipping or ignoring tests.

    4. Re:Why air gaps? by Altrag · · Score: 1

      Air _is_ an insulator. Its the same idea as double pane windows.

    5. Re:Why air gaps? by Anonymous Coward · · Score: 0

      If you're talking about the battery compartment, the problem isn't because the battery touched the sides of the case, it's because once it can touch the sides, it has no more room to expand and that creates pressure inside the battery that causes internal parts of the battery to come into contact. That internal contact causes internal heating and fires. Adding a physical insulator around the battery would only make this space problem worse.

    6. Re:Why air gaps? by Mr+D+from+63 · · Score: 3, Informative

      Testing probably missed it because even with the thinner design it was a rare occurrence. Failures in 1 out of 200,000 phones is a big deal when you ship enough, but not so easily found in lab sampling. That said, the testing should mimic conditions beyond any expected in normal use and have a higher failure rate.

    7. Re:Why air gaps? by newcastlejon · · Score: 3, Informative

      Air _is_ an insulator. Its the same idea as double pane windows.

      Double glazed windows have a vacuum (or sometimes a noble gas) between the panes. If air gets in between the panes condensation starts to appear in cold weather. If that happens the window has to be replaced; they can't be repaired economically.

      --
      If God forks the Universe every time you roll a die, he'd better have a damned good memory.
    8. Re:Why air gaps? by Tablizer · · Score: 1

      Air _is_ an insulator. Its the same idea as double pane windows.

      But a solid insulator in theory makes it much harder for both sides of the bread to meet in the middle of the sandwich when pressure is applied.

      (I shouldn't attempt analogies while hungry.)

    9. Re: Why air gaps? by Anonymous Coward · · Score: 0

      Manufacturing is all about tolerances. When making literally millions of units each one is going to be slightly different, so you build tolerances into the design. Maybe only 0.01% of the batteries they produced were likely to explode when under pressure, but that amounts to hundreds of units that are effectively bombs without this expansion gap.

      They're not going to do mechanical stress testing on more than a few dozen units, so the chances of catching this sort of problem were very low.

      That's why you build tolerances into the design.

    10. Re:Why air gaps? by hey! · · Score: 3, Insightful

      If you're talking about things that happen with p < 10^-5 you can can't test to any kind of reasonable confidence level. Engineers have to use the collective experience of the profession as a whole as a guide, in addition to actual testing.

      Since phone design is interdisciplinary -- involving marketing, industrial design and engineering -- engineers will just have to push back when the designers and marketers try to take that half millimeter away. This case will be a touchstone for future generations of EEs, the way the Tacoma Narrows Bridge is for civil engineers and Therac-25 is for software engineers.

      --
      Post may contain irony: discontinue use if experiencing mood swings, nausea or elevated blood pressure.
    11. Re:Why air gaps? by Obfuscant · · Score: 2

      This case will be a touchstone for future generations of EEs, the way the Tacoma Narrows Bridge is for civil engineers and Therac-25 is for software engineers.

      And thalidomide for pharma.

      We expect miracles from our scientists and then sue them into oblivion when they aren't perfect.

      There are currently ads seeking class action participants for a lawsuit about talcum powder. It seems, after decades of use, women can get ovarian cancer if they used it. Who knew? Could anyone predict that?

    12. Re:Why air gaps? by swillden · · Score: 3, Insightful

      Double glazed windows have a vacuum (or sometimes a noble gas) between the panes.

      Or dry air. There's no need to use anything other than air to avoid condensation. You just need to make sure the air is dry and the windows are sealed so humid air can't get in. I doubt many windows are vacuum-filled; that's just begging for trouble, and would also limit the size of panes. 15 pounds per square inch adds up to a lot of pressure very quickly.

      --
      Note to ACs: I usually delete AC replies without reading them. If you want to talk to me, log in.
    13. Re:Why air gaps? by ELCouz · · Score: 2

      It's the desiccant stored in the glazed window internal frame that keep the moisture out.
      Once it leaks air the desiccant is saturated and moisture appear on the pane.
      Argon or other noble gas is just a gimmick...like filling your tires with nitrogen.

      Disclaimer: I work in the glass industry.

    14. Re:Why air gaps? by Khyber · · Score: 1

      "they can't be repaired economically"

      Only if you don't possess vacuum kiln equipment. Plenty of hobbyist lost wax casting types do and you could probably bug them for a repair for fifty bucks or so.

      --
      Still waiting on Serviscope_minor to wake up to fucking reality and realize that Jessica Price isn't going to fuck him.
    15. Re:Why air gaps? by MrKaos · · Score: 2

      And, why didn't testing catch this?

      I don't care *WHAT* issues you may think you've found, this product has a launch date of next month and it *WILL* be shipped. We need *TEAM* players not doubters, now get back to work, *ALL OF YOU*!

      --
      My ism, it's full of beliefs.
    16. Re:Why air gaps? by Streetlight · · Score: 4, Informative

      Double or triple pane windows usually have argon as the fill gas as both its higher molar mass and smaller molecular size than the diatomic major molecules in air increase its insulation ability because of reduced thermal conductivity. It's also naturally water free if provided from liquid argon which is generally available. FYI, the thermal conductivity of a gas is proportional to the square root of molar mass and inversely proportional to the square of the molecule's diameter. At least that's true for real gases at atmospheric pressure which behave nearly like ideal gases

      --
      In a time of universal deceit, telling the truth is a revolutionary act. George Orwell
    17. Re:Why air gaps? by dadman · · Score: 1

      And, why didn't testing catch this?

      I don't care *WHAT* issues you may think you've found, this product has a launch date of next month and it *WILL* be shipped. We need *TEAM* players not doubters, now get back to work, *ALL OF YOU*!

      But, but, but ...

    18. Re:Why air gaps? by Altrag · · Score: 1

      Y'all got fancier windows than I do then! The ones I'm talking about / used to are literally just two panes of glass stuck in the same frame.

      I'm definitely not suggesting air is the best insulator by any means (we wouldn't bother with real insulation if it was) but its certainly better than not having an air gap, and doesn't require the sort of sealing that you'd need for vacuum or gas-filled gaps.

    19. Re:Why air gaps? by Altrag · · Score: 1

      When you put it like that.. I'm not sure why insulators even came up -- I was just responding to the parent without considering the context of the article.

      They needed an air gap to allow for expansion as the battery warmed up (which they do due to normal usage.) TFA said nothing needing air (or anything else) as an insulator.

      I suppose parent was suggesting putting an insulator between the layers inside the battery (since TFA suggested that the lack of expansion room ended up crushing said layers and shorting things out,) but I'm assuming that would likely be ruled out either because those layers need to remain uninsulated (I don't know the design of the battery of course, but somewhere along the way positive and negative need to be able to exchange electrons if you want the spice to flow) or simply because they were trying to make the battery as small as possible, sticking extra stuff in the sandwich probably wouldn't be the right answer (and again, the article kind of backs that up by suggesting leaving expansion room around the battery rather than a design change on the battery itself.)

    20. Re:Why air gaps? by drinkypoo · · Score: 1

      Literally nobody is filling their double-pane windows with nothing. They are all doing it with argon or nitrogen. Nitrogen is a great choice because it doesn't react with much, it's cheap, and it has much lower thermal transfer than air.

      --
      "You're right," Fisheye says. "I should have set it on 'whip' or 'chop.'"
    21. Re:Why air gaps? by drinkypoo · · Score: 1

      Argon or other noble gas is just a gimmick...like filling your tires with nitrogen.

      You think the Skyline's tire fill is a gimmick? Tires really do expand significantly when they heat up, because of the expansion of the air inside them. Filling the pane with gas isn't done to keep moisture out, it's to make the window transfer less heat. They have clothing that inflates to keep you warm now and filling it with nitrogen or argon makes it work much better than just filling it with air.

      --
      "You're right," Fisheye says. "I should have set it on 'whip' or 'chop.'"
    22. Re:Why air gaps? by drinkypoo · · Score: 2

      There are currently ads seeking class action participants for a lawsuit about talcum powder. It seems, after decades of use, women can get ovarian cancer if they used it. Who knew? Could anyone predict that?

      The short answer is yes. We've known for decades that there was a potential risk.

      --
      "You're right," Fisheye says. "I should have set it on 'whip' or 'chop.'"
    23. Re:Why air gaps? by gweihir · · Score: 1

      There were. This is about pressure compromising them, because the pressure was far higher than they were designed to withstand. Samsung screwed up extremely, but not that extremely.

      --
      Most ACs are not even worth the keystrokes to insult them. Be generically insulted by this and ignored otherwise.
    24. Re: Why air gaps? by Anonymous Coward · · Score: 0

      It was a minimal number of failures sure, but the time in service was also minimal.

      That is why good engineering tests for simulated lifespan and not just 'does it turn on'?

    25. Re: Why air gaps? by Anonymous Coward · · Score: 0

      Thanks for mentioning Therac-25. I looked into it, and it is a perfect example of how just because something is done on the computer doesn't make it a video game to be taken lightly. I'll be showing this to others.

    26. Re:Why air gaps? by Anonymous Coward · · Score: 0

      A Japanese company makes vacuum-paned glass using microscopic pillars spaced regularly; barely visible with the panes very close together. This product is difficult to get a hold of but it is available and can allow someone to hack their own windows.

    27. Re:Why air gaps? by Anonymous Coward · · Score: 0

      Your message is wrong. Generally double glazed only have air. They have desiccant hidden in the sides to absorb the initial moisture, and reduce the air trapped inside to low moisture content. If the side seal breaks, the air inside can end up having more moisture which causes condensation. They can also have various gasses for an extra fee, but generally they normally have air. I have repaired the seals in windows and re-filled them with 'air' and new moisture absorbing desiccant. I could link to blog post explaining the procedure when I get around to write it.. They can be repaired economically, indeed it is a quick process.

    28. Re:Why air gaps? by gander666 · · Score: 1

      And you think nitrogen doesn't expand when heated? That's cute.

      --
      Suppose you were an idiot and suppose you were a member of Congress ... but I repeat myself. - Mark T
    29. Re:Why air gaps? by coinreturn · · Score: 2

      Bitchin' info. They should have built-in gas-discharge lamps so my windows would glow purple.

    30. Re:Why air gaps? by Anonymous Coward · · Score: 0

      I'm not a physical* engineer, so am I missing something?

      * I don't mean I'm virtual, but that I don't engineer physical stuff. Software.

      You are so much a software engineer that you can't bring yourself to use the word hardware?

    31. Re:Why air gaps? by drinkypoo · · Score: 1

      And you think nitrogen doesn't expand when heated? That's cute.

      Of course it does! It only expands less without the other stuff in it.

      --
      "You're right," Fisheye says. "I should have set it on 'whip' or 'chop.'"
    32. Re:Why air gaps? by Anonymous Coward · · Score: 0

      What about double-glazed doughnuts? :)

    33. Re:Why air gaps? by Anonymous Coward · · Score: 0

      Air _is_ an insulator. Its the same idea as double pane windows.

      Double glazed windows have a vacuum (or sometimes a noble gas) between the panes. If air gets in between the panes condensation starts to appear in cold weather. If that happens the window has to be replaced; they can't be repaired economically.

      Sure it can... I know someone that owns a company that does this. The window is vented and allowed to breathe.

    34. Re:Why air gaps? by Anonymous Coward · · Score: 0

      You must really love the sound of your own voice.

    35. Re:Why air gaps? by Obfuscant · · Score: 1

      We've known for decades that there was a potential risk.

      We've known forever that everything is a potential risk. Calling something a "potential risk" doesn't mean it actually is. And correlation (the first study reported in your link) isn't causation.

      I'd also point out that the very first popup at your link was an offer to join the class action suit. Hmmm. A site that wants people to help lawyers make money is talking about research that would entice people to help lawyers make more money. Hmmm. No possible bias there, huh?

    36. Re:Why air gaps? by ELCouz · · Score: 1

      When I say gimmick... it's more like a catch to pump money out of pocket of people... do you really think that mom and dad's car need nitrogen tire fill? It's the same with the Argon filled double glazed window.

      You pay extra money for it. Is it worth it?
      Nope... this will make your window rating jump from R2 to R2.2 insulation. Might as well pay for Triple Glazing.

    37. Re:Why air gaps? by Anonymous Coward · · Score: 0

      Air *is* nitrogen. At least, almost 78% of it is; The bulk of the remainder is mostly oxygen, whose thermal properties (thermal conductivity, heat capacity) do not differ substantially from those of nitrogen. Why on earth do you think pure nitrogen is so much better an insulator than air?

    38. Re:Why air gaps? by Anonymous Coward · · Score: 0

      Per my previous post, air *is* pretty much nitrogen, with the bulk of the remainder mostly oxygen, whose thermal properties (thermal conductivity, heat capacity) do not differ substantially from those of nitrogen. Why on earth do you believe pure nitrogen works so much better than air?

    39. Re:Why air gaps? by swillden · · Score: 1

      Double or triple pane windows usually have argon as the fill gas

      High end ones do. I bought new windows a few years back, and argon fill added a non-trivial amount to the price. I bought it, and I suspect most people do, but it was definitely optional and not cheap.

      --
      Note to ACs: I usually delete AC replies without reading them. If you want to talk to me, log in.
    40. Re:Why air gaps? by Khyber · · Score: 1

      What was that? I can't hear you over the sound of me closing up shop for Southern California's oldest mineralogical and lapidary society, where we have such equipment.

      PS - I'm the shop coordinator.

      --
      Still waiting on Serviscope_minor to wake up to fucking reality and realize that Jessica Price isn't going to fuck him.
    41. Re:Why air gaps? by Anonymous Coward · · Score: 0

      You are so full of yourself that it is sickening. You have serious psychological problems and need help badly.

    42. Re:Why air gaps? by cwsumner · · Score: 1

      It's the layers in a battery, if you put an insulator between them then the battery does not work!

      See: "electrolyte"

  4. Theory without any empirical data to back it up? by JoeyRox · · Score: 3, Interesting

    Theory sounds plausible but doesn't carry much weight without experiments that demonstrate the internal battery components actually making contact as a result of the factors they describe.

  5. Interesting by Freischutz · · Score: 2

    ....and this was not caught during testing because?

    1. Re:Interesting by Yvan256 · · Score: 4, Insightful

      1. Design ultra-thin phone
      2. Disregard warnings from engineers
      3. Profits!

    2. Re:Interesting by ausekilis · · Score: 0

      My guess is because they didn't have test procedures for safety under various folds. Though if this race-to-paper continues, we may just have the Galaxy Note, Origami Fire edition.

    3. Re:Interesting by duke_cheetah2003 · · Score: 1

      ....and this was not caught during testing because?

      But, it was caught during testing. We bought it and tested it out and it seems to catch fire and burn, so end of story.

      Didn't you know end users are testers now?

    4. Re:Interesting by sit1963nz · · Score: 3, Funny

      They were tested using Android Lollypop, its only when they installed Marshmallow that it became an issue.

    5. Re:Interesting by amiga3D · · Score: 1, Troll

      Microsoft has been testing their software in this manner for decades.

    6. Re:Interesting by Bing+Tsher+E · · Score: 1

      Things like that would be caught in the FMEA, not in testing in a lab. I hope they do a FMEA on their designs.

    7. Re:Interesting by Moof123 · · Score: 3, Insightful

      Having sat through management/engineer meetings it went like this:

      Manager: Why are you wasting 10% there?
      Engineer: We need design margin for tolerance stackup and thermal expansion.
      Manager: But we'll lose sales! (in his head: "I'll lose my bonus!")
      Engineer: We need design margin or there is a chance that some of the batteries could catch on fire.
      Manager: So only a chance? Make the battery 10% bigger and stop complaining.

      Engineers are measured and cautious in their statements. They talk in statistics, numbers, and probabilities, all of which have been lobotomized out of mid-level managers.

    8. Re: Interesting by Anonymous Coward · · Score: 0

      Everyone was already thinking this but you felt the need to do this for us thickos? How kind

    9. Re:Interesting by RubberDogBone · · Score: 1

      Phones put on test stands would never feel the flexing that occurs in daily use. They probably issued phones for real-world walk-around testing but I bet they did so carefully putting the prototype phones into carry bags and otherwise treating them with kid gloves, rather than jamming them into pants pockets and sitting on them.

      The rush to get these things manufactured and on sale probably left no time at all for issuing prototypes out for actual testing, plus they may have been paranoid about that anyway.

      It's all so stupid anyway. Everybody is used to plugging in their devices all the time these days. I have chargers at home, in the car, and at work. Miniscule improvements in battery life mean nothing. It's going to be plugged in almost all the time anyway.

      --
      Sig for hire.
    10. Re: Interesting by Anonymous Coward · · Score: 0

      It happens in 1 out of 100,000 phones. That's why.

    11. Re:Interesting by Darinbob · · Score: 3, Interesting

      Engineers are basically people who keep saying "it can't be done in under budget and on time!" Which is why most companies now have products designed by marketing and sales. CEOs don't like workers who keep telling the truth.

    12. Re:Interesting by gweihir · · Score: 1

      A) the worst (fire) still happens rarely and
      B) It takes time to happen (the battery expanding)

      If you do not understand the problem (and Samsung very likely did not on the decision-layer), you cannot design a test for it.

      --
      Most ACs are not even worth the keystrokes to insult them. Be generically insulted by this and ignored otherwise.
    13. Re:Interesting by gweihir · · Score: 2

      Engineers are also often unable to get the message across or do not even notice that it has not gotten across. As a technology consultant, this skill is about as important, if not more, than your engineering skills. I once heard a talk by a lobbyist on how to talk to politicians (a real eye-opener). The same applies here: Do not say it "could have a thermal runaway event", say "it will explode". Do not say "this could create a vulnerability", say "if you do that, somebody will attack you successfully, and it will be very embarrassing, as the mistake is on amateur-level". Do not say "we may have a small number of failures", say "we will have some very angry customers, because the device will have failed on them". And so on.

      If you still do not get the message across, make sure all your warnings are documented in writing and make sure the people you warned know these are documented. That way, it it will be much harder to make you the scape-goat _and_ the stupid manager will see that _you_ are preparing for the failure already. For some, that will finally make them listen. Of course, if you regularly get not through and you are pretty sure you did everything you reasonably could (no, going to the press is not an option, that will kill your career permanently), look for a better job.

      --
      Most ACs are not even worth the keystrokes to insult them. Be generically insulted by this and ignored otherwise.
    14. Re: Interesting by cwsumner · · Score: 1

      It happens in 1 out of 100,000 phones. That's why.

      If that were not a bad problem, they would not be recalling all of the phones...

    15. Re:Interesting by robinsc · · Score: 1

      Reminds me of the o-ring debacle on the space shuttle. the engineers know there was a high risk of failure but they couldn't get anyone else to understand the gravity of the situation.

      --
      Linkedin http://in.linkedin.com/in/robinsaikatchatterjee
  6. PEBSAC by Anonymous Coward · · Score: 0

    Problem exists between smartphone and chair

    Doesn't surprise me, hipster doofuses

    1. Re: PEBSAC by Anonymous Coward · · Score: 0

      Every time I see some girl jamming their wide, thin phone (generally with no protective case) into their teeny back pocket to where it's sticking half out of the pocket and walking around I want to scream "what the F*k are you doing???" You just know they're going to sit on it, forgetting they crammed it in there.
      Then you read of Apple being sued because the iPhone 6 stops responding to touch if it bends until the contacts are separated from the glass - well DUH! Or, *gasp* it catches fire if bent - um don't put it in places which cause it to be bent perhaps???

  7. Interesting (a weighty problem) by Ostracus · · Score: 0

    Koreans are a very light people. ;-)

    --
    Shai Schticks:"You don't make peace with friends, you make peace with enemies"
    1. Re:Interesting (a weighty problem) by war4peace · · Score: 3, Funny

      Korean person: "No-no! Americans VERY heavy!"

      --
      ...gis sdrawkcab (usually not responding to ACs; don't bother posting as AC)
  8. [Correction] Re:Why air gaps? by Tablizer · · Score: 5, Funny

    Correction, I meant "physical engineer". But if you were a psychical engineer, you'd know that already.

    1. Re:[Correction] Re:Why air gaps? by AmiMoJo · · Score: 2

      It had to be 0.01mm thinner than the last model, so no room for the battery to expand into.

      --
      const int one = 65536; (Silvermoon, Texture.cs)
      SJW, n: "Someone I don't like, and by the way I'm a fuckwit" - AC
    2. Re:[Correction] Re:Why air gaps? by Jeremi · · Score: 1

      Eh, I think you meant "mechanical engineer"(*)

      (*) I don't mean a robot who is trained in engineering, I mean a human being who designs physical objects ;)

      --


      I don't care if it's 90,000 hectares. That lake was not my doing.
    3. Re:[Correction] Re:Why air gaps? by Tablizer · · Score: 1

      Mechanical engineers will be replaced by mechanical engineers.

      Back to seriousness, battery design would be a combination of mechanical and electrical engineering, wouldn't it?

    4. Re:[Correction] Re:Why air gaps? by swimboy · · Score: 1

      Back to seriousness, battery design would be a combination of mechanical and electrical engineering, wouldn't it?

      And stir in a bit of packaging engineering while you're at it.

      --
      Ask me how the Heisenberg Principle may or may not have saved my life.
    5. Re:[Correction] Re:Why air gaps? by Bing+Tsher+E · · Score: 1

      Don't forget chemical engineering.

    6. Re:[Correction] Re:Why air gaps? by Mr+D+from+63 · · Score: 2

      Don't forget chemical engineering.

      For maximizing the explosiveness, of course.

  9. Explode? by markdavis · · Score: 4, Insightful

    >"...what may have caused some devices to overheat and explode,..."

    To my knowledge, NONE of them "exploded". Those that had actual problems had overheating which led to a fire. That is not an "explosion". That word was used by the media to stir up tons of inaccurate hype.

    >"...causing them to touch, heat up, and eventually in some cases, catch fire."

    Exactly.

    1. Re:Explode? by Lehk228 · · Score: 4, Insightful

      it doesn't really matter if it was a lithium explosion or lithium fire that burned off your cock, if your cock is still burned off.

      --
      Snowden and Manning are heroes.
    2. Re:Explode? by itsenrique · · Score: 1

      Accidentally modded down, meant to mod up!

    3. Re:Explode? by Gadget_Guy · · Score: 5, Funny

      it doesn't really matter if it was a lithium explosion or lithium fire that burned off your cock, if your cock is still burned off.

      Exactly. You don't want "fire-balls" in any sense of the word.

    4. Re:Explode? by markdavis · · Score: 1

      >"it doesn't really matter if it was a lithium explosion or lithium fire that burned off your cock, if your cock is still burned off."

      While that is true, the loaded, sensational, and inaccurate use of word of "explosion" for these rare fires sends much more fear and panic through people than just the word "fire"... which is exactly why they used the word. An "explosion" would blow your hand off, it doesn't just burn it... far more damage and from a distance too.

    5. Re:Explode? by twosat · · Score: 1

      Reminds me of this video that I chanced upon recently on Youtube: https://www.youtube.com/watch?...

  10. This whole debacle could have been avoided by Waffle+Iron · · Score: 3, Funny

    If only Samsung had brought in Mr. Whipple to help educate the public.

  11. Re:Theory without any empirical data to back it up by delt0r · · Score: 1

    the TFA says "engineers" so it must be true.

    --
    If information wants to be free, why does my internet connection cost so much?
  12. It was caused by a poor implementation of HCF. by sims+2 · · Score: 1

    Instead of being activated at users request it activates at random.

    --
    Minimum threshold fixed. Thanks!
  13. What about stop making stuff super thin? by Joe_Dragon · · Score: 5, Insightful

    What about stop making stuff super thin?

    1. Re:What about stop making stuff super thin? by mlts · · Score: 4, Interesting

      This. I have my old HTC Wizard from over ten years ago in a drawer. It isn't thin... but it had a week's battery life, and that is with the TI OMAP CPU overclocked as fast as possible.

      I'd rather have a fatter phone that has a better battery life, perhaps a slider phone, so I can use a real physical keyboard as opposed to typing and hoping autocorrect doesn't cause issues.

      Why does every phone maker want to beat Apple at Apple's game? Instead, why can't they create their own games with their own rules? There is definitely room for slider phones shaped like the Droid.

    2. Re:What about stop making stuff super thin? by Pulzar · · Score: 4, Insightful

      Why does every phone maker want to beat Apple at Apple's game? Instead, why can't they create their own games with their own rules? There is definitely room for slider phones shaped like the Droid.

      You make it sound easy to come up with a phone design that's radically different from iPhone, but also very desirable.

      Slider phones just don't sell well, and big thick phones don't sell well. So, that's not going to do it. I guess Motorola tried something with modular add-ons, but that doesn't seem to be working, either.

      Why can't they create their own game? Because it's damn hard.

      --
      Never underestimate the bandwidth of a 747 filled with CD-ROMs.
    3. Re:What about stop making stuff super thin? by Anonymous Coward · · Score: 0

      God I miss my slider. Battery span wasn't any better, but you could probably fit a couple amp-hours in there now (safely, even) so it'd be a week easy.

      My flip lasted longer yet. A week, when using it for music and video. 3gp video. At 160x120. I guess that makes it easy to hit two weeks.

      We're going to keep making phones more and more fragile until - oh wait, it already happened to Samsung.

    4. Re:What about stop making stuff super thin? by Bing+Tsher+E · · Score: 1

      Slider phones just don't sell well, and big thick phones don't sell well.

      Wouldn't one of the gadget vendors have to try to sell one for us to know if they would sell well or not??

      But, right. Products have to be sold 'internally' to the marketing critters before the C-levels will allow Engineering to develop them.

    5. Re:What about stop making stuff super thin? by LeftCoastThinker · · Score: 1

      Those of us who miss the old days of the Nokia brick phone still have options. I have had a beefy case with a built in battery that gives me 2x battery life. I have been looking at small, bluetooth keyboards built into the case, so there are options, just not phones with those features.

      --
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    6. Re:What about stop making stuff super thin? by rmdingler · · Score: 1

      Occasionally, it has to fit in a small portman's pocket, my good man.

      --
      Happiness in intelligent people is the rarest thing I know.

      Ernest Hemingway

    7. Re:What about stop making stuff super thin? by interkin3tic · · Score: 1

      I feel like the "tech mobile consumer electronics" industry as a whole is so far up each other's assholes they haven't bothered to ask normal people if they want phones that are thinner. Every time I search for an upcoming phone to see if I should buy it (about every 2 years) all I can find are articles written by people who sound like they masturbate using the newest version of the iphone while thinking about how many more pixels next month's iphone might have.

      Asking anyone I know IRL what phone they have "Uh, I think an iphone? No wait, it's the other one."

      Do they do focus groups for this shit? If so, is entirely composed of whatever type of human being is addicted to really minor improvements in phones?

    8. Re:What about stop making stuff super thin? by PsychoSlashDot · · Score: 3, Insightful

      big thick phones don't sell well.

      We don't know that. Every time there's a new chipset or screen that increases efficiency, the manufacturers reduce thickness and battery life at the same time. We stay at maybe four-hours of full-power usage. Nobody's made a phone that gets a next-generation efficient SoC but keeps its thickness and markets it as "last year this was thin enough, only now we've got 16 hours of battery life!"

      --
      "Oh no... he found the .sig setting."
    9. Re:What about stop making stuff super thin? by wickerprints · · Score: 3, Insightful

      The obsession with thinness is all the more ironic considering that for many of these devices, the very first thing that the user does is cradle it in a thick plastic or silicone case to protect its exquisitely sleek and fragile surface.

      I totally understand that people want to be able to protect and personalize their phones through cases, but it really proves how consumers don't actually NEED each successive generation of devices to be increasingly thinner. They want durability, they want grip, and they want better battery life, none of which is served by making devices so thin they will bend or explode with the slightest force.

      Don't make something thin unless you intend for it to also bend.

      I'm old enough to remember the "small" phone craze that happened decades ago. Mobile phones were on this progressive death spiral toward tinier and tinier form factors (this was even parodied in Zoolander). Now it's the same thing, just with thinness. It's a sign that the industry has gotten too comfortable with itself. Something will need to come along that really innovates, much in the way that the original smartphones broke the tiny phone trend.

    10. Re:What about stop making stuff super thin? by farble1670 · · Score: 1

      Wouldn't one of the gadget vendors have to try to sell one for us to know if they would sell well or not??

      Businesses spend millions on market research and user testing. They know what people want and will buy and in what quantities and how much they'll pay. Shockingly, they don't spend billions in product development based on the feedback of a few C-level lackies.

      If I know anything, I know that businesses like money. If there was money to be had by producing flip phones they'd do it. Remember there's a cutoff where it just doesn't pay to develop a product. Maybe they could sell 500k flip phones? And maybe, that's not enough. They target the market where they can (potentially) sell 50 million units.

    11. Re:What about stop making stuff super thin? by baker_tony · · Score: 1

      Pff, whatever, if it was half a millimeter thicker, it would've ruined the entire aesthetics of the device and everyone would've just called it fatty-fat-fone. I'd rather have it exploding and burning me than walk around with fatty-fat-fone.
      Americans and have no idea what a millimeter is and will believe this. Muah ha ha ha!

    12. Re:What about stop making stuff super thin? by just+another+AC · · Score: 1

      and big thick phones don't sell well. So, that's not going to do it.

      A phone that is big and thick for the sake of it will not sell well. A phone with huge battery and crippled performance (compared to the best phone available) will not sell well etiher.

      However a phone that has huge frickin letters all over the ads stating "flagship smartphone with one week battery life"... would probably sell like hotcakes. Otherwise battery cases would not sell so well.

    13. Re:What about stop making stuff super thin? by dottrap · · Score: 2

      To support your point, remember what Samsung designs looked like before the iPhone?

      Here's a photo reminder:
      http://photos2.appleinsider.co...

    14. Re:What about stop making stuff super thin? by dottrap · · Score: 1

      Though I should say that it would be a good idea for Samsung and other manufacturers to come up with their own game.

      Largely ignored by everybody is how good Apple's OS engineering team with respect to battery consumption and performance. Apple invested a lot of resources to keep their software stack very efficient. This is how they can get away with shipping ultra-thin phones with long battery life with relatively boring/conservative battery specs.

    15. Re:What about stop making stuff super thin? by Anonymous Coward · · Score: 0

      Why does every phone maker want to beat Apple at Apple's game

      Because Apple's profits are eclipsing everybody else's.

    16. Re:What about stop making stuff super thin? by Pulzar · · Score: 1

      However a phone that has huge frickin letters all over the ads stating "flagship smartphone with one week battery life"... would probably sell like hotcakes. Otherwise battery cases would not sell so well.

      There's a few problems I can see there:

      - If the current battery gives you one day, a week-long battery would have to be 7 times larger. You don't need much market research to tell you that nobody would keep that in their pocket.
      - Battery cases, which you brought up, already give you the flexibility of having a bigger battery for an incremental cost, while providing the flexibility of having a thick or thin phone. Why build a thick phone without the flexibility?
      - How well are the battery cases selling? The TAM for the full portable battery market (not just battery cases) is about $4B vs. $380B for the phones. Even if you say that phones are on average 10x the cost of batteries, and completely ignoring the tablet users, that's still only one in 10 users that buy an extra battery. There's some money to be made there, but clearly most people are fine with the batteries on their phones.

      --
      Never underestimate the bandwidth of a 747 filled with CD-ROMs.
    17. Re:What about stop making stuff super thin? by Pulzar · · Score: 1

      Every time there's a new chipset or screen that increases efficiency, the manufacturers reduce thickness and battery life at the same time.

      Is that really true any more? iPhone 6 was 6.9mm, iPhone 6s and 7 are both thicker at 7.1mm.

      Nexus 5X was 7.9mm, Pixel is 8.6mm.

      Galaxy S6 was 6.9mm, S7 is 7.9mm.

      Once we've reached the 7-8mm range, it doesn't look like things are getting thinner any more, and are actually bouncing back a bit.

      --
      Never underestimate the bandwidth of a 747 filled with CD-ROMs.
    18. Re:What about stop making stuff super thin? by hambone142 · · Score: 1

      Good point.

      Eventually, one reaches diminishing returns WRT thin-ness.

      Battery issues and rigidity are on top of the problems.

      What's the point? Apple likes to play this game but it's getting so it just doesn't make sense.

      Koreans are great "copiers" when it comes to technology, be it cars, phones and the rest. The do make some good shit now but as my M.E. friend calls their cars... "they're throwaway, nothing one would keep for decades".

      I watched this gang go through our documentation department when my company "partnered" with them. It was rather humorous.

    19. Re:What about stop making stuff super thin? by Darinbob · · Score: 1

      Now they sell fat power packs so that you can charge your ultrathin phone. I think a lot of companies just say "don't worry about it, someone will come along and solve our design problems and sell it as an add on."

    20. Re:What about stop making stuff super thin? by nut · · Score: 1

      Slider phones just don't sell well ...

      I've always suspected that line was bullsh*t. Moving parts on the phone may have just cost more in fixes under warranty.

      --
      Never trust a man in a blue trench coat, Never drive a car when you're dead
    21. Re:What about stop making stuff super thin? by Anonymous Coward · · Score: 0

      Thicker phones that are durable enough they don't need a quarter-inch of padded case on all sides should sell just fine; see how well the OtterBox Defender series of cases sell, that can take an iPad Air up to the thickness of a hardback novel, but lots of folks buy that. But if the iPad Air smaller than the current iPad + Defender and as durable to start with? Folks wouldn't buy the case, but they'd still buy the iPad.

      Honestly just adding 2-3mm of thickness would relax the tolerances on devices drastically, and allow for nearly drop-proof screens with the added thickness, and if anything might well lower costs as the tolerances would relax drastically AND allow for monstrous battery life.

      So no, nobody's asking for a return to the 'brick' phones of yore, but if they'd stop trying to shave every single mm off of every single dimension phones would be a lot better overall.

      - WolfWings, too damn lazy to login to /. for too damn many years

    22. Re:What about stop making stuff super thin? by Alioth · · Score: 1

      They aren't that fragile. My Dad has my old iPhone 4, it's never been kept in a thick plastic or silicone case, and it still looks nearly as good as new despite now being 6 years old (and on its original battery!)

      My iPhone 6 which replaced it, when it came out, has never been in a case. It rattles around in my pocket with everything else in there. It's now 2 years old and still looks practically brand new despite never having been in a case and having been dropped once or twice.

      They aren't anywhere near as fragile as people think. They are actually pretty tough.

    23. Re:What about stop making stuff super thin? by gweihir · · Score: 1

      The problem here is that smartphones have gotten too similar. There is no actual value in making them thinner now, but it is something that the (let's face it, mostly stupid) customers can get excited about if primed right.

      --
      Most ACs are not even worth the keystrokes to insult them. Be generically insulted by this and ignored otherwise.
    24. Re:What about stop making stuff super thin? by AmiMoJo · · Score: 1

      There are Chinese manufacturers offering mega-battery phones on Banggood and AliExpress. Build quality is reasonable, spec is excellent (often they have dual SIMs, one of which can be an SD card for extra storage, full HD screen, decent camera, headphone socket etc.) and they are really cheap.

      They mostly have fairly stock Android. You might suffer from a lack of OS updates if that bothers you, but since they cost about 1/4th the cost of an Apple or Samsung you can just buy the latest model next year.

      No idea how well they actually sell, but the number of them out there suggests that there is a market.

      --
      const int one = 65536; (Silvermoon, Texture.cs)
      SJW, n: "Someone I don't like, and by the way I'm a fuckwit" - AC
    25. Re:What about stop making stuff super thin? by Anonymous Coward · · Score: 0

      Most people don't know what they want, how can they communicate it to market researchers? If companies were so good at doing this, why did it take Steve Jobs to make the iPhone and shake up the smartphone industry?

    26. Re:What about stop making stuff super thin? by Anonymous Coward · · Score: 0

      The phrase, "no shit, Sherlock" comes to mind. If you play in someone's ball game with them making the rules, and as the opposing side, expect them to win and win big every time. The closest analogy would be the Red Queen's cricket game, where the ball, the goals, and even the stick were all hers. Trying to out-Apple Apple is stupid.

      Want to make profits on phones? Don't try to make an iPhone. Make different devices. Hell, about 10 years ago, there were a ton of form factors available. They didn't take tons of market research, and almost all were reasonably profitable. Trying to be like Apple just means always being in Apple's dust. Breaking out and doing something Apple wouldn't is how you win.

    27. Re: What about stop making stuff super thin? by Anonymous Coward · · Score: 0

      Blackberry has a slider Android phone. They're on the verge of oblivion.

    28. Re:What about stop making stuff super thin? by farble1670 · · Score: 1

      Most people don't know what they want, how can they communicate it to market researchers?

      It sure seems like most of the posts in this thread have people communicating what they want. It's sure fun to think one is smarter than everyone else though.

      If companies were so good at doing this, why did it take Steve Jobs to make the iPhone and shake up the smartphone industry?

      The idea that every idea out of Apple, a company of tens of thousands, came from Jobs is ridiculous. It does make a good movie though. The iPhone is a culmination of the ideas and engineering of many, many people. Moreover, Apple doesn't have unique ideas. They take existing ideas and execute them well. Jobs even admits that. There were many, MANY smartphones prior to the iPhone. Many, many mediocre semi-successful products and many flops. That iPhone benefited from all of those to know what worked and what didn't.

    29. Re:What about stop making stuff super thin? by PRMan · · Score: 1

      I loved slider phones until the good multitouch screens took over. Now, even with my sweaty hands which wouldn't register on the old on-screen keyboards, they work just fine on newer phones.

      --
      Peter predicted that you would "deliberately forget" creation 2000 years ago...
    30. Re:What about stop making stuff super thin? by Anonymous Coward · · Score: 0

      The thing is, if you double the battery size you might increase the size of the phone by 50%, as proportionally a lot of the size is still taken up by other components with most phones. A battery case on the other hand will double the size of the phone, because it needs extra protection for the battery which wouldn't be needed if the battery was inside the phone, it is also less efficient using one battery to keep another charged.

      I think most people wouldn't mind a few extra millimeters on their phone to get 50% more battery life, but doubling the size and weight with a battery case pushes it too far.

      I don't use a battery case myself because they are a poor solution to the problem, instead I frequently carry a portable charger, but not a great solution either.

  14. I doubt this is correct by Harlequin80 · · Score: 2, Interesting

    If this was the case then a slightly physically smaller battery would have solved the problem. They could have achieved this quite easily, even if it meant sacrificing capacity. And given they started by recalling the phones and replacing the batteries but there were still problems I would suggest they are wrong.

    1. Re:I doubt this is correct by Atomic+Fro · · Score: 1

      You could be right. To me it sounds like both the battery design was too aggressive for current technology as well as the space allowed for the battery to do its thing was insufficient. If they replaced the battery, it would have to be less aggressive, lower capacity design plus a reduction in the battery's physical size.

      The resulting battery may have been insufficient for the phone in a way that was unacceptable to the marketing guys. If the phone only has 1 to 2 hours of power with the fix, the hit to the brand may have been calculated to be too great than just doing a recall and going back to the drawing board.

      --

      ==================
      Hippie Logger Jock
      ==================
    2. Re:I doubt this is correct by janoc · · Score: 2

      They were replacing the faulty batteries with the same type (= same dimensions & capacity), only from a more recent batch, because the original suspicion was a battery manufacturing problem, not a design issue with the phone itself. Remember the Sony laptops catching fire few years ago because of defective batteries?

      So the conclusion is still plausible, because the replacement batteries have never fixed the underlying design issue - essentially equivalent of the iPhone's "bendgate", unfortunately with much worse consequences.

      I am only surprised that Slashdot caught wind of this only now, this hypothesis has been around pretty much since Samsung has anounced the recall.

    3. Re: I doubt this is correct by Anonymous Coward · · Score: 0

      Unless Samsung specifically already knew that the lack of expansion room is what was causing the battery over heating they were likely to just think it was a batch of badly manufactured batteries, these things happen.
      By the time they had actually worked out that a smaller battery would have fixed it the note brand was irreparably damaged and the higher ups had thrown the note 7 model into a river with concrete shoes.

    4. Re: I doubt this is correct by Anonymous Coward · · Score: 0

      to add to the above, it would have taken time to design and manufacture a slightly smaller battery, flagship smartphone batteries aren't off the shelf components. By the time those would have been ready for mass production the Samsung executives had already axed the note 7

    5. Re:I doubt this is correct by fnj · · Score: 1

      the battery design was too aggressive for current technology

      Battery "design"? The phone company doesn't "design" the battery. They just call up the Ching Chong Very Fine Battery Company and say "we want 10 million LiPoly state of the art batteries x by y by z mm". All the manufacturers call up the same battery company. There's nothing "special" about the batteries any of them use.

      That said, you may be right that these batteries are all ticking time bombs. We know that all models of all brands of cell phones (and vapes, and "hover" boards, and ...) have had instances of fire. But it does seem that the Note 7 stood out with a statistically much higher than average incidence. Pretty sure the researchers are on to something with their packed-too-tight theory. But it's not the whole answer. As long as you put bombs inside of every cellphone, some of them are ALWAYS going to find a way to blow up.

    6. Re:I doubt this is correct by sexconker · · Score: 1

      It's not Slashdot "catching wind" of this. It's the startup company Instrumental writing a blog post and shopping it around to all the tech sites to get people to go find out what the company Instrumental is and does.

      From their website http://www.instrumental.ai/ , it looks like they sell services to companies that manufacture things.

      Their case study with Pearl Auto seems like they landed the gig because Pearl Auto is a startup run by a friend.

      And as far as I can tell the most work they actually do is put camera and other sensors in the assembly line and use image analysis software to alert on differences. Beyond that, they're consultants.

      Their "case study" supports this, as does their team page (all software people) and their hiring page (they need a mechanical engineer and a computer vision person).

      If they do anything more substantial than that it isn't supported by their website, which is little more than a blog, bios, and links to LinkedIn profiles. They announced their existence on October 31st of 2016, after "over a year in stealth". Yet today, they're ground-breaking research into a single Note 7 is plastered across every tech site, blog, and news aggregator.

      I don't know if they know anything about manufacturing products or not, but they do know a thing or two about manufacturing clicks,

    7. Re:I doubt this is correct by Espectr0 · · Score: 1

      If they got replacements with different batteries it would have created an incompatibility with the previous ones, i bet they decided against that. Also, they may have not known until too late

    8. Re:I doubt this is correct by Dan+East · · Score: 1

      This actually contributes to the theory of this story. One battery manufacturer used slightly better / thicker insulators between the layers in the battery, thus they better withstood the design flaw that resulted in excessive pressure on the battery. However that just reduced the frequency of failure, but still didn't prevent it entirely.

      --
      Better known as 318230.
    9. Re:I doubt this is correct by Harlequin80 · · Score: 1

      I doubt you would have seen that level of change. Dropping 200mah would have shrunk the battery considerably. Also I suspect that that would have had a way smaller impact on brand then scrapping them completely did

    10. Re:I doubt this is correct by Harlequin80 · · Score: 1

      Possibly. But I would have to assume they had their full compliment of engineers working on the problem at the time. And it seems strange that they wouldn't have picked up on something as simple as battery expansion.

      Also I'm not sold on the batteries being that fragile or the frame of the note being that strong it didn't move enough. There definitely was a problem with the battery system. However I suspect it has more to do with the charging system than anything else. Potentially trying to pump too high a current in caused failures.

    11. Re:I doubt this is correct by Harlequin80 · · Score: 1

      How? The batteries will be charged via the charging circuit in the phone and the phone will charge them until they reach full charge. Which is probably 4.8v per cell used (I don't know the exact cell arrangement of these batts). It doesn't really matter if the battery is a larger or smaller capacity. It will just take more/less time to charge.

      The only potential compatibility issue would be around the connectors, which I suspect is an easy fix.

    12. Re:I doubt this is correct by drinkypoo · · Score: 1

      I am only surprised that Slashdot caught wind of this only now, this hypothesis has been around pretty much since Samsung has anounced the recall.

      Go back and read the discussions here on Slashdot before you [mis]characterize them. I saw this theory put forward repeatedly.

      --
      "You're right," Fisheye says. "I should have set it on 'whip' or 'chop.'"
    13. Re:I doubt this is correct by gweihir · · Score: 1

      And fail. They would have had to admit that management (likely upper management) had massively screwed up by messing with the design-process. If they had people with that level of integrity and insight there, this would not have happened in the first place.

      --
      Most ACs are not even worth the keystrokes to insult them. Be generically insulted by this and ignored otherwise.
    14. Re:I doubt this is correct by Anonymous Coward · · Score: 0

      I suspect you're correct, but I'd add the possibility of a thermal runaway caused by misbehaving software pegging the CPU for extended duration. Why?

      I have a Galaxy 5. If I go to location with zero cell service (basement) for an hour or two, the phone heats up "sometimes on rare occasions" and there's an unexpected significant battery drain. Perhaps that's everything trying to phone home at the same time while the radio is searching.

      I was concerned at one location I went to regularly (and wanted my phone to work afterwards without charging), so I switched to low power mode at that location.

      Test to reproduce? Fire up the radios and peg the CPU with a test firmware for a couple of days. I would hope they'd have such a firmware for the CE mark anyway, but maybe not. That's what you're supposed to do though -- activate everything for radiated and immunity, and not run in a standby mode.....

    15. Re:I doubt this is correct by necro81 · · Score: 1

      If this was the case then a slightly physically smaller battery would have solved the problem.

      you are probably right. Speaking from experience, however, it is no small task to design, test, and certify a new battery design, let alone ramp up production to crank out a few million perfect copies. It's a months-long task, even for a company with the resources and experience of Samsung. When you've got a crisis going on right now, a solution 3-6 months out isn't going to save you.

  15. STOP WITH THE THIN FETISH by Anonymous Coward · · Score: 5, Insightful

    Hopefully this provides some motivation to stop equating thin with better.

    Nah, who am I kidding, people are stupid.

    1. Re:STOP WITH THE THIN FETISH by Anonymous Coward · · Score: 0

      But a thick cell-phone ruins the lines of my designer slim-fit distressed jeans.

    2. Re:STOP WITH THE THIN FETISH by Anomalyst · · Score: 1

      wear it in an ankle holster

      --
      There is no right to feel safe thru security vaudeville at the expense of everyone's freedom, privacy and tax money.
    3. Re:STOP WITH THE THIN FETISH by bluegutang · · Score: 1

      You know sports car owners are mocked for their "penis extensions"? Maybe we should mock recent-smartphone owners for their "diet extension".

  16. Fuck thin. by Anonymous Coward · · Score: 0

    Give me a nice THICC tablet any day.

    I am sick of this stupid thin fetish for technology. Pisses me off so much.
    If it isn't features being removed from the hardware, it is EXPLOSIONS being added as a feature.
    I already get my daily dose of explosions. Of the non-damaging kind. I don't need any more, it is exhausting as is.

  17. Proof that thinner is not better by Nunya666 · · Score: 3, Insightful

    As in most cases, going to extremes is rarely a good thing.

  18. Now by Anonymous Coward · · Score: 1

    Can I get next version with bulky size and replaceable battery? I never cared about having phone smaller, as i put it in bulky protector case anyway. I want replaceable battery

  19. User Error by aevan · · Score: 2

    So it's not a design flaw, merely people have been handling them wrong. Well, all's forgiven then, we have precedent that bad gripping by users is user fault, not company. Time to dismiss this as non-news.

  20. -1 Overrated by Gadget_Guy · · Score: 2

    If this was the case then a slightly physically smaller battery would have solved the problem. They could have achieved this quite easily, even if it meant sacrificing capacity. And given they started by recalling the phones and replacing the batteries but there were still problems I would suggest they are wrong.

    Did you even look at the linked report? These engineers have the benefit of hindsight. They knew that the initial attempts to fix the problem failed; it's mentioned in the very first paragraph of the linked report. They said that sources from within Samsung had various theories as to the cause, so whatever fix that Samsung did it was the wrong theory. Just because Samsung got it wrong (twice) doesn't mean that these engineers were wrong.

    Your post mirrors what was in the second paragraph of the report:

    But, if it was only a battery part issue and could have been salvaged by a re-spin of the battery, why cancel the product line and cede several quarters of revenue to competitors? We believe that there was more in play: that there was a fundamental problem with the design of the phone itself.

    It's amazing that you can claim that what these engineers deduced wrong when you haven't even read even the first two paragraphs of what they thought. RTFA.

    1. Re:-1 Overrated by sexconker · · Score: 0

      If this was the case then a slightly physically smaller battery would have solved the problem. They could have achieved this quite easily, even if it meant sacrificing capacity. And given they started by recalling the phones and replacing the batteries but there were still problems I would suggest they are wrong.

      Did you even look at the linked report? These engineers have the benefit of hindsight. They knew that the initial attempts to fix the problem failed; it's mentioned in the very first paragraph of the linked report. They said that sources from within Samsung had various theories as to the cause, so whatever fix that Samsung did it was the wrong theory. Just because Samsung got it wrong (twice) doesn't mean that these engineers were wrong.

      Your post mirrors what was in the second paragraph of the report:

      But, if it was only a battery part issue and could have been salvaged by a re-spin of the battery, why cancel the product line and cede several quarters of revenue to competitors? We believe that there was more in play: that there was a fundamental problem with the design of the phone itself.

      It's amazing that you can claim that what these engineers deduced wrong when you haven't even read even the first two paragraphs of what they thought. RTFA.

      Did YOU look at it? Did YOU RTFA? No, you didn't.

      This is the company in question. https://www.instrumental.ai/te...

      It's a small startup of 9 people with no history. None of the people are even listed as mechanical engineers. They're all software engineers (which isn't a recognized profession, by the way) and business people. Not a one among them has the authority to make any claims about the Note 7. None of them have the actual experience with the Note 7 to do so either - they had a single sample that they couldn't actually do anything with other than write the blog post and fish it out to tech sites for hits and to get their name out there.

      The Note 7 is fucked. Samsung knows why, Google and Apple likely know why, and I'm sure various state actors know why. A startup of 9 young, hip, individuals with a background in software engineering who got their hands one one single unit and saw that it was a tight fit don't know why.

      We know what the problem is. The batteries burst into flames. We know why this happens in lithium-based batteries, and we know how to build batteries to not do this in a specified operational environment.
      Heat, shorts, pressure on cells, insufficient or incorrect materials within the battery, encasing the battery, etc. One or more of these things was insufficient for the application in question (powering the Note 7 in a typical environment). We don't know which and to what degree. The few that do know why haven't said.

    2. Re:-1 Overrated by Gadget_Guy · · Score: 3, Informative

      None of what you said has ANYTHING to do with what I wrote, nor what was in the article. Did YOU read the article, or did you just jump straight to the TEAM link at the top to "play the man, not the ball"?

      This is the company in question. https://www.instrumental.ai/te...

      It's a small startup of 9 people with no history. None of the people are even listed as mechanical engineers. They're all software engineers (which isn't a recognized profession, by the way) and business people. Not a one among them has the authority to make any claims about the Note 7.

      Thanks for the link. Very helpful. If you read the article, you know that it says in the second paragraph (why don't I have to read beyond the first screen?):

      As hardware engineers ourselves, Sam and I followed the story closely.

      We can use the link you provided to find out who "Sam and I" are, and with its helpful embedded linkedin links, find out what just how unqualified they are to comment on the Samsung phone:

      Anna Shedletsky

      • Nearly 6 years experience as a System Product Design Engineer at Apple, including Apple Watch System Product Design Lead.
      • Key specialties: mechanical design for mass production, in-factory implementation, data-based decision making, and rising to challenges.
      • Stanford University Mechanical Engineering Bachelors and Masters. Continued education in Chinese.
      • Apple Watch System Product Design Lead and Manager, October 2012 - February 2015
      • iPod Product Design Engineer, July 2009 - October 2012

      Samuel Weiss

      • Massachusetts Institute of Technology BS Mechanical Engineering; Mathematics
      • Stanford University Mechanical Engineering Masters
      • Product Design Engineer - Apple Watch, July 2012 - June 2015

      Oh dear. I certainly hope that those two experienced mechanical engineers spent more time examining the Note 7 problem than you spent attempting to trash their reputations. I guess Slashdot pest isn't a recognised profession either.

    3. Re:-1 Overrated by sexconker · · Score: 1

      It has everything to do with your response to Harlequin80's post. You accused Harlequin80 of not reading, yet you didn't read shit yourself (or if you did, you didn't do the follow-up exercises of understanding and thinking).

      If you had, you would have realized the engineers in question didn't do a damn thing, didn't draw any meaningful conclusion, looked at a grand total of 1 unit, and only did so to write a blog post to pimp their startup.

      It's all fluff and is absolutely unworthy of discussion, let alone serious consideration with regards to the actual issues behind the Note 7 catastrophe.

    4. Re:-1 Overrated by Man+On+Pink+Corner · · Score: 2

      The engineers pointed out something that is well-known in the industry, but that was evidently ignored by Samsung: batteries need room to expand.

      It doesn't matter if this fact is pointed out by hardware engineers, software engineers, or used-car salesmen. It doesn't matter what degrees or professional certifications they hold or don't hold. It's a consequence of fundamental physical laws, and it's very likely to be the root cause of the problem. Your arguments, on the other hand, amount to puzzlingly-irrelevant ad-hominem rants.

      (The interesting question, by the way, isn't the fact that a few phones caught on fire. The interesting question is, "Why did Samsung see no alternative but to kill the entire product, bulldoze the factory, and seed the ground with salt?" That's really what the Instrumental engineers set out to answer, and I believe their conclusion is probably correct.)

    5. Re:-1 Overrated by sexconker · · Score: 1

      They merely said there must be some inherent flaw with the phone they can't work around!!111.
      Yet they fail to state why they can't simply use a smaller battery, or a battery with higher tolerances, or more aggressive thermal throttling in the charging circuitry or even in the phone's SoC.

      The REAL reason Samsung didn't try to fix it again is because they had utterly lost all faith and good will after the first recall resulted in phones still bursting into flames. There's no salvaging that, even if you decide to put in a perfectly safe, but smaller, battery, and completely solve the issue. The Note 7 was dead. You can't take the thing on planes. It's tarnished. Scrapping it and waiting a few months for the next round is the best bet.

      If you spent 5 fucking seconds thinking about the issue after the "fixed" phones started Samsunging, you'd know this.

    6. Re:-1 Overrated by Anonymous Coward · · Score: 0

      Apple watch? Talk about resume stains.

    7. Re:-1 Overrated by drinkypoo · · Score: 1

      Yet they fail to state why they can't simply use a smaller battery,

      They cannot get a smaller battery which will let them meet the claims they made while advertising the phone in a timely fashion for installation. And since the phone is not designed for easy battery replacement, the total cost of such a program would be greater than the cost of simply replacing the phones or giving rebates. If your concern is avoiding waste, that's going to have to be covered by new laws because it's not covered by old ones, at least not internationally.

      or a battery with higher tolerances,

      No such battery exists; they all expand and none of them want to be pinched during that process.

      or more aggressive thermal throttling in the charging circuitry or even in the phone's SoC.

      Irrelevant, because the battery can expand during use, not just charging. It's heat-driven. And they can't stop that without castrating the phone in other ways.

      --
      "You're right," Fisheye says. "I should have set it on 'whip' or 'chop.'"
    8. Re:-1 Overrated by Gadget_Guy · · Score: 2

      I don't give a damn whether you like the report, because once again what you said has absolutely NOTHING to do with what I wrote. What exactly did I say in my original post that was actually incorrect and showed that I hadn't read the article? The original poster claimed that since Samsung had tried and failed to fix the problem by replacing the batteries that this analysis of the problem was wrong. That assumes that 1) there was only one possible reason for the fires and that Samsung and these engineers must have come to the same conclusions, and 2) the authors were unaware of this revelation. I pointed to the parts of the article that showed that this was wrong. So what is your evidence that I hadn't read the article that I had quoted? Let's see:

      the engineers in question didn't do a damn thing

      Apart from opening up the phone and using their expertise and experience.

      didn't draw any meaningful conclusion

      Apart from postulating a reason why the phone caught fire.

      looked at a grand total of 1 unit

      Do you think that they would have found larger gaps around the batteries in other phones?

      and only did so to write a blog post to pimp their startup.

      How does that mean that they are wrong?

      And once again, how are any of things related to what I said, and prove that I didn't read the article? Who should I trust; some trained mechanical engineers or you? You, who claims that others have comprehension issues and yet who can't follow the links that proved you wrong on the page that you posted in your rush to belittle the report by attacking the credibility of the authors. You, who claims that others haven't read the article, but never once specifically refers to any passage written in the article and who only makes wishy-washy statements about their conclusions. You, who thinks that only examining one phone is a problem, even though that is probably one more than you have examined.

      Anna Shedletsky and Samuel Weiss have made some plausible, credible arguments. You have just spouted fluff that is absolutely unworthy of discussion.

    9. Re:-1 Overrated by Gadget_Guy · · Score: 2

      Yet they fail to state why they can't simply use a smaller battery, or a battery with higher tolerances, or more aggressive thermal throttling in the charging circuitry or even in the phone's SoC.

      You really showed me up as the one who didn't read the article! Oh wait, what's this I am reading from the report:

      A smaller battery using standard manufacturing parameters would have solved the explosion issue and the swell issue. But, a smaller battery would have reduced the system's battery life below the level of its predecessor, the Note 5, as well as its biggest competitor, the iPhone 7 Plus. Either way, it's now clear to us that there was no competitive salvageable design.

      So despite what you claim, they did indeed state that they could use a smaller battery, and gave reasons why it would not be a competitive solution. But what about what you said regarding aggressive thermal throttling etc? It seems that catching fire was only one symptom of the problem:

      If the Galaxy Note 7 wasn't recalled for exploding batteries, Sam and I believe that a few years down the road these phones would be slowly pushed apart by mechanical battery swell.
      ...
      When batteries are charged and discharged, chemical processes cause the lithium to migrate and the battery will mechanically swell. Any battery engineer will tell you that it's necessary to leave some percentage of ceiling above the battery, 10% is a rough rule-of-thumb, and over time the battery will expand into that space. Our two-month old unit had no ceiling: the battery and adhesive was 5.2 mm thick, resting in a 5.2 mm deep pocket. There should have been a 0.5 mm ceiling. This is what mechanical engineers call line-to-line -- and since it breaks such a basic rule, it must have been intentional.

      So yes, they may have been able to find other solutions, but that still would not have fixed all the problems. And even if there was some software or hardware fix, it doesn't matter because that was beyond the scope of the article. They were not trying to fix the problem, they were just trying to explain why the fires happened in the first place. The title of the report was "Aggressive design caused Samsung Galaxy Note 7 battery explosions". I do agree with you that it is obvious why Samsung cut their losses and deleted the product; it was because nobody had any faith in the phone anymore. But that doesn't alter the findings of this report. It is perfectly valid because they were not looking at the problem from a business point of view, just a mechanical engineering point of view.

      If you spent 5 fucking seconds thinking about the issue after the "fixed" phones started Samsunging, you'd know this.

      I think I see your problem here. Perhaps if you spent more than 5 fucking seconds thinking about things then you would write better posts. Oh, and read the articles.

  21. Re: Theory without any empirical data to back it u by Anonymous Coward · · Score: 1

    You realize the "T" in TFA stands for "the," right?

  22. Die, Phablets! Time for a small, fat phone revival by Anonymous Coward · · Score: 0

    My Palm Treo ( the first real Smartphone, rounded Icons and all ) was the perfect size to fit in my back jeans pocket and still be sturdy enough to take a crush or a fall. And its batteries didn't explode.

    I hope Samsung's problem with large and thin lead to manufacturers exploring new ( old ) form factors and move away from these laughably inconvenient phablets.

  23. Maybe the user was holding is wrong by Anonymous Coward · · Score: 0

    I wouldn't be surprised if this is the kind of design flaw that sneaks in Apple phone in the pursuit of thinner and thinner phones.

  24. NO - they didn't find the problem by Overzeetop · · Score: 4, Insightful

    If they found the problem, it means that they can reproduce it. They were entirely unable to make their test unit fail due to the tight fit, nor were they able to observe that an increase in pressure of a phone in the off condition (under which at least one of the fires occurred in the v2 Note 7) *led to* a runaway thermal condition.

    They're basically just speculating because they are looking for some clicks. This is about as conclusive proof as Trump has of 3 million illegals voting in California.

    --
    Is it just my observation, or are there way too many stupid people in the world?
    1. Re:NO - they didn't find the problem by Anonymous Coward · · Score: 0

      Repro: Find some ultra cool hipsters who can text at light speed, who wear skinny jeans, and sit in wooden chairs at Starbucks...i'm sure those darn things will "blow" in no time.

    2. Re:NO - they didn't find the problem by gweihir · · Score: 1

      You do not understand statistics at all, do you? With the published numbers of fires, they would have had to buy 100'000 units or so and test them several months to even get one instance of a fire.

      --
      Most ACs are not even worth the keystrokes to insult them. Be generically insulted by this and ignored otherwise.
    3. Re:NO - they didn't find the problem by Overzeetop · · Score: 1

      If they knew the exact reason, they could reproduce the conditions which caused the fire. If the tolerances are so tight, it's simply a matter of simulating the conditions on expansion - which they failed to even attempt.

      --
      Is it just my observation, or are there way too many stupid people in the world?
  25. There was nothing to catch by Overzeetop · · Score: 1, Informative

    These idiots have no idea what caused the fires. They haven't shown a single case where they can identify that the pressure on the battery causes thermal runaway. Remember that several phones failed while idle (not charging) and one failed while turned off (the guy on the plane). This "explanation" is just a couple of guys trying to Monday morning quarterback.

    --
    Is it just my observation, or are there way too many stupid people in the world?
    1. Re:There was nothing to catch by dgatwood · · Score: 2

      Much like testing for certain medical diseases, sometimes you can only determine a cause by exclusion.

      • A phone that is turned off is consuming no power, so the failure cannot plausibly be caused by an excessive rate of discharge or by external heat (e.g. being too close to a hot GPU).
      • A phone that is not charging is adding no power to the pack, so the failure is probably not caused by an excessive rate of charge or by overcharging.
      • Multiple battery manufacturers use different battery chemistry and different designs, so the failure cannot plausibly be caused by dendrites or other similar failures. Also, the failures don't occur with those same batteries in other devices, which eliminates the batteries themselves as a likely cause.

      When you eliminate the impossible, what remains are failures that can occur even with a battery that is neither charging nor discharging. The most likely causes, then, involve some form of physical damage.

      LiPo packs change size during normal charging and discharging just a bit. That's why there are tolerances build into the design. With insufficient tolerances, bad things happen (TM), and even if the tolerances are sufficient to avoid self-puncturing at their maximum size, it is possible that flexing the case in just the right way while the pack is maximally swollen could still puncture the pack. So this is at least a plausible explanation, whereas most other theories aren't.

      With that said, even if we assume that these folks are correct, it does not absolve other aspects of the design. Not all failures have only a single root cause. For example, IIRC, overcharging a LiPo pack can cause unusual levels of battery expansion from hydrogen buildup, which when combined with normal levels of flexing in a case that has insufficient tolerances, would result in the pack perforating and venting with flame.

      --

      Check out my sci-fi/humor trilogy at PatriotsBooks.

    2. Re:There was nothing to catch by hambone142 · · Score: 1

      How can they determine "cause" when the battery burned to the point where physical evidence was likely impossible to analyze?

      In my past life, I looked at similar failures. When something becomes incendiary, more often than not, all one has is a pile of severely-oxidized material.

      It's most-often not possible to determine root cause of such failures.

  26. Sounds more like the opposite by Solandri · · Score: 0

    If TFA is correct, then Samsung tried to put the largest battery possible while keeping the phone as thin as possible. If they wanted more profit, they could've gone with a smaller battery or a thicker design with larger tolerances. Both would've been cheaper for them to manufacture and thus would've increased their profit margin. But they eschewed that marginal profit and went the extra mile for the customer - packing in the largest battery possible while keeping the phone as small and thin as possible. Unfortunately they went too far, to the point where it compromised the safety of the device.

    If I had to guess, they probably goofed because this was only their second gen all-metal design. They didn't have the experience to tell them how tight was too tight (at least not until now). They could pack the battery this tightly on their older plastic bodies without problems because battery expansion would just push the rear plastic shell up a little.

    1. Re:Sounds more like the opposite by fnj · · Score: 1

      If they wanted more profit, they could've gone with a smaller battery or a thicker design with larger tolerances.

      Except to make a profit you have to make sales, and better battery life increases sales.

    2. Re: Sounds more like the opposite by Anonymous Coward · · Score: 0

      In order to make the margin on the product, you need to actually sell the product. They felt the need to have a ridiculously thin phone, at the same time as having decent battery life without having power efficient designs and software. So the only thing left to them was to run a razor thin safety margin, and they got burned.

      Literally.

    3. Re:Sounds more like the opposite by Anonymous Coward · · Score: 0

      The reason they put it in was to reduce profits? Wow, I'm impressed by your obvious inability to think coherently. They (apparently) changed the battery's design and COMPLETELY failed the primary engineering task to test it in real world situations as any new design requires. Temperature cycling, deformation, impacts are entirely expected and could be an obvious source of damage. It is a well known fact that battery damage may result in overheating and explosion. I really would like each and every engineer/designer involved to explain publicly, under oath, why he (she) didn't do their jobs, and then impose stiff sanctions on the management team which was so incompetent as to allow such a product to get to market without the basics being done. OTOH, in the overall scheme of things, the number of deaths this caused (I can't recall any, but perhaps one or two), makes this a insignificant technical foul up (although a material public relations disaster). I worked in Product Development in several companies where we'd bemoan the power the Sales/Marketing departments had over technical decisions. This goes to show that even in companies which are technically driven, the "corruption" can spread into technical management, if the boys aren't well supervised at the top. It kinda reminds me of the decision by NASA to not do that one last QC check on the mirror, in order to save money. It's all about deadlines, budgets, and money.

    4. Re: Sounds more like the opposite by Anonymous Coward · · Score: 0

      Why does better battery life improve sales when having a damned removable cover does not? You think people who don't care they're literally buying disposable garbage think past "ooh, shiny"?

  27. Bullshit by sexconker · · Score: 1

    The "manufacturing technology company" is a small startup with no experience, expertise, or credentials.
    Further, they had a single unit to work with. Their testing revealed nothing conclusive and they weren't able to actually discern anything.

    All they did was look at it and say it's a very tight fit. Everything else is speculation.

  28. Re:Theory without any empirical data to back it up by sexconker · · Score: 5, Informative

    Software "engineers" at best.
    This is the company in question. https://www.instrumental.ai/te...

    It's a small startup of 9 people with no history. None of the people are even listed as mechanical engineers. They're all software engineers (which isn't a recognized profession, by the way) and business people. Not a one among them has the authority to make any claims about the Note 7. None of them have the actual experience with the Note 7 to do so either - they had a single sample that they couldn't actually do anything with other than write the blog post and fish it out to tech sites for hits and to get their name out there.

  29. Hold it.. by XSportSeeker · · Score: 3, Informative

    People should bare in mind that this is at most an educated guess made by disassembling a single unit and speculating about limits of current tech battery design.
    They were not hired by Samsung, they are not an official body of investigation, and they didn't have access to anything in the design in manufacturing process.

    It's quite possible that they are right, but they are not explaining anything there, just speculating.

    Now, it'd be extremely sad if the Note 7 was killed because of such a design oversight, because quite honestly, that's borderline amateurish. It could happen, as similar problems happen in most brands. Just that Samsung made the omission in the worst component possible.

    We have examples of problems in antennas, cameras, lenses, connectors, shoddy speakers, crappy GPS chips, poor materials used in bits and pieces, among several other stuff... the difference is that if you have something wrong with battery, the consequences might not be only working poorly, ending up in glitches and whatnot. The consequence might be an explosion. Which is probably the worst thing hardware can do. :P

    Anyways, the device is as dead as it can be. Which is plenty bad, because it'd probably be a best seller otherwise. Hopefully though, the lesson is learned by all manufacturers. It simply isn't worth sacrificing battery security to make the device thinner, or to shove extra mAh in there.
    The worst part is that I can bet all you want that fans of the Note line would definitely not be bothered much with having a smaller battery or a slightly thicker phone. It's all about the stylus and screen size.

    Back to the topic, I'd wait for further investigation for a final conclusion. Disassembling a single device and taking guesses is not that much better from theories that have been thrown around so far.

    1. Re:Hold it.. by sexconker · · Score: 1

      Most significantly - they are software people trying to pimp their startup company (announced 10/31/2016).

      https://www.instrumental.ai/te...
      https://www.instrumental.ai/bl...

    2. Re:Hold it.. by gweihir · · Score: 1

      Looking at the findings and the rationales given, chances are they are 100% on the mark. It takes an actual engineer to see that though.

      --
      Most ACs are not even worth the keystrokes to insult them. Be generically insulted by this and ignored otherwise.
  30. Obligatory... by ctrl-alt-canc · · Score: 3, Funny
  31. I know it may be a waste of time.. by Anonymous Coward · · Score: 0

    .. but, can we stop this "thinnest phone" bull**** now? All of the people I know want more battery life and couldn't care less about having the thinnest phone.

  32. Could have, if they knew, and confirmed it by raymorris · · Score: 1

    IF the manufacturer knew this was *the* cause of the problem, the only cause, and they had confidence in that assessment, then yes they could have fixed it. Or avoided it.

    Come to think of it, no matter what the cause(s) is/are, the manufacturer could have avoided the problem in the first place, if they knew all of the above. Obviously they don't magically know all these things.

  33. Re:Theory without any empirical data to back it up by just+another+AC · · Score: 1

    They're all software engineers (which isn't a recognized profession, by the way)

    Thanks but I won't take your word for that. Please show your reasoning.

    If a software professional can be a member of a recognised professional engineering body - they can be a "Certified Practicing Engineer" just like any other engineer - then I would say that they are by definition a recognised profession.

  34. It was all for you! by pgnas · · Score: 1

    PR: "we did it all to please you, we wanted you to have the best..." Designers: "You change it, you are on your own" CEO/CFO: "It'll save us how much? do it"

  35. Re: Die, Phablets! Time for a small, fat phone rev by Anonymous Coward · · Score: 0

    Blackberry would like to have a word with you.

  36. That is not a good reason by SuperKendall · · Score: 1

    If I had to guess, they probably goofed because this was only their second gen all-metal design.

    But even just from the summary, you do not need any experience of any kind to know you need spacing in the battery, which the engineers omitted. It was not a case of not having enough experience with a metal design, it was outright engineering malpractice.

    --
    "There is more worth loving than we have strength to love." - Brian Jay Stanley
  37. Linux issue by Anonymous Coward · · Score: 0

    I'm not surprised that a Linux device contains a flaming defect.

    1. Re:Linux issue by Ash-Fox · · Score: 1

      I'm not surprised that a Linux device contains a flaming defect.

      It's "lp0 on fire" all over again!

      --
      Change is certain; progress is not obligatory.
  38. I guess I'm a luddite. by TigerPlish · · Score: 1

    I"m a LUDDITE! I like small phones that aren't impossibly thin and obnoxiously wide and tall.. So yeah, I like like a 5S or iPhone SE. Thick enough to not have thermal detonation issues, thick enough for my fingers to actually grab to something other than a near knife-edge, thick enough to not destroy the chips within (touch-disease, anyone?)

    5S / SE is perfection. It could be argued that 4 / 4S was perfection, but they were too heavy and in the hands of the clumsy the rear glass could easily break. Beautifully made, though - that stepped bezel - anyone else notice it was a dozen or so little steps milled out of the stainless slab? No? no one else notices little touches like that? Or like the 4 / 4S and 5 / 5S / SE have a very slight concave shape all around the periphery? Maaaaybe to let your fingers lift it from a surface easily?

    Huh. I"m betting some of you did notice these little things.

    --
    The "Civilized World" jumped the shark ca. 1973.
  39. No, I don't like plugging in my phone all the time by PeterM+from+Berkeley · · Score: 1

    It limits my mobility since I don't like charging the phone more than necessary. I want to charge it and have it last a couple of days, not charge it every night.

  40. Leave the removable battery! by Anonymous Coward · · Score: 1

    Love the removable batter in my Note 4. Wish they would stay with that. Problem solved.

  41. Hand grenades explode. Batteries don't. by Anonymous Coward · · Score: 0

    Hand grenades explode. Batteries overheat and catch fire. They don't explode.

  42. I still think the battery case opened somehow by Streetlight · · Score: 1

    In order to have a fire, the organic liquid electrolyte in the battery must come in contact with air. It's possible the pressure produced by heating the electrolyte and converting it to a high pressure gas caused the battery case to break. The battery case could also have been pierced by some sharp component inside the phone as the case expanded. If these ether containing liquids-turned-to-gas came in contact with air they can spontaneously explode if peroxides formed (which ethers form in air) or undergo self ignition because of their high temperature exceeding their flash point temperature.

    One thing's seems for sure: these phone cases are pretty rigid and do not pucker of bend under the intense force produced by the expanding battery case. If the cause of the fires and explosions is because of the volume expansion of the battery case inside the phone's case, that phone case is pretty tough.

    --
    In a time of universal deceit, telling the truth is a revolutionary act. George Orwell
  43. Re:Theory without any empirical data to back it up by sexconker · · Score: 1

    Professions are legally protected and regulated trades. Plumbers, electricians, lawyers, doctors, etc. have regulations, standards and codes their work has to adhere to. "Software engineers" are programmers who want a fancier sounding title. (I am a programmer.)

  44. Re:Theory without any empirical data to back it up by lgw · · Score: 2

    They're all software engineers (which isn't a recognized profession, by the way)

    You're not a real engineer unless you roll the petard up to the castle gate! These new-fangled train drivers aren't real engineers at all!

    --
    Socialism: a lie told by totalitarians and believed by fools.
  45. Re:Theory without any empirical data to back it up by HornWumpus · · Score: 1

    You can get a PE in software engineering in the USA.

    Of course to take the test you have to be under the supervision of another PE for a number of years, and the software engineer PE is new. So some interdisciplinary work is required.

    Won't be a problem for those who will take it. They are all destined to work in aviation or power.

    Most 'software engineers' couldn't pass the EIT. (To start their training period prior to taking the PE.) Most 'software engineers' can't tie their shoes and wave by-by.

    --
    John McAfee 'It was like that time I hired that Bangkok prostitute; to do my taxes, while I fucked my accountant'
  46. Those are not "engineers" by Anonymous Coward · · Score: 0

    Those are shit people from a shit startup talking shit about shit they don't know shit about. I hope Samsung sues the shit out of them, takes all of their shit away, throws them into a shit hole and pays a bunch of incontinent pieces of shit to shit on them night and day. That will teach them not to say shit about shit they don't know shit about. Shit.

    1. Re:Those are not "engineers" by gweihir · · Score: 1

      They very much are engineers. Takes one to know one though, and you do not qualify.

      --
      Most ACs are not even worth the keystrokes to insult them. Be generically insulted by this and ignored otherwise.
  47. Removable plastic back side and replacable battery by Racerdude · · Score: 1

    Samsung had stuck with the removable batteries of the Note 3 and Note 4 (which I own and love) this problem would not have occurred as the removable plastic back side would have allowed the battery to expand. This is also the same reason that I stopped buying the Note-series of Phones: No removable battery. So lose-lose :(

  48. Re:Theory without any empirical data to back it up by SomeoneFromBelgium · · Score: 1

    I must say that I'm sceptical too.
    Especially when they conclude that 'the smalles pressure' would cause the explosion to occur.
    1. I'm not an expert on what kind of testing is done on a phone during development but I consider it extremely unlikely that no scenario involving a high level of pressure on the body to be part of it.
    2. I didn't study the reports on these explosions but a seem to remember that at least one of them happened when the device was simply lying on a table or something with nobody touching it??

    My personaly theory (based on just my lively fantasy only): remeber that article on those batteries with a window in it. Through the window they could study the creation of 'dendrites'. A kind of chemical plant like structures that 'grow' on the walls of the battery cell as the result of charging and uncharging of the battery. When they touch the other side of the battery cell they create tiny wires that induces a small 'short circuit' thus reducing the capacity of the battery.
    I think they created a new type of battery with layers that were closer than before. They applied special software to control the charging and uncharging cycles in such a way that they could control the growth of this dendrites sufficiently... in lab conditions. But in the real world people used their phone in a way that they did not take into account. Too many dendrites touching==> short circuit.

  49. Re:Theory without any empirical data to back it up by gweihir · · Score: 1

    As these are well-tested and established design best practices, they carry a lot of weight to any actual engineer. The thinking you demonstrate here is exactly what lead to this fiasco and likely what Samsung management did: "Oh, we need a 0.5mm gap here? You don't say. Lets omit it to make the phone thinner and try it out on a 10 phones or so for a week. No problem found? Let's run with it." Result: Epic fail. Design on very low amateur-level.

    --
    Most ACs are not even worth the keystrokes to insult them. Be generically insulted by this and ignored otherwise.
  50. Is this believable? by Anonymous Coward · · Score: 0

    What kind of pressure would be that great? Or was the batteries designed so poorly that they did not have good case protection? Its possible the design of the battery was the problem, given that initial replacements did the same thing as the defective one's did. Maybe the design of making the battery too thin to fit into the case was the problem. I personally think Apple has had similar problems with the 6S Plus only not so dramatic as fires but failures none the less. Just seems to me the biggest issues with smartphones has been with batteries. Never really saw this until the obsession with thin began.

    1. Re: Is this believable? by Anonymous Coward · · Score: 0

      Internal lithium batteries don't have 'case protection'. They are protected by a plastic bag.

  51. Re:Theory without any empirical data to back it up by Anonymous Coward · · Score: 0
    I'm not sure engineering certification has anything to do with the validity of the title "engineer." My hairstyle engineer has no engineering cert. The copy engineers that work at news agencies need no such cert. The slave children clothing engineers most likely have no engineering cert, they are not any less of an engieer than a software engineer... in fact, more so, because clothing is REAL, has mass, and software is abstract, doesn't weigh anything. The parking engineers at the swank clubs don't have any engineering certifications, unless you count a driver's license as one. And the first engineers on the planet and still the most populous and prolific engineers on the planet, fertile women, or baby engineers, never needed certifications.

    Or, maybe we are wrong, and software programmers, by definition, can never strictly be engineers, i.e. "software engineer" is merely a polite euphamism, because there is simply nothing tangible that they engineer (electron positions? magnetic fields?), there is no physical machine, no physical engine. no physical anything, that they are deisigning or building... so programming by definition can not be "engineering." The "engineering" in "software engineering" is a metaphor, and nothing else, for actual engineering.

  52. I am a Professional Engineer & do software by Anonymous Coward · · Score: 0

    In California, at least, but I'm fairly sure all the rest of the states are the same:
    There is no "practice" or "title" for Software Engineer like there is for Civil, Electrical, Mechanical Engineers (practice) or Petroleum, Traffic, etc. (title). You can't call yourself an Engineer or DO engineering (as defined in the act) without a license (or under the supervision of a licensed engineer). You can call yourself a consultant - anyone can be a consultant.

    Software to a small extent shows up on the Electrical Engineer exam, but there's not much of what someone who does software engineering (as taught in the schools and practiced in industry) would find familiar.

    The laws in most states say "icensees must demonstrate by education, experience, and examination that they are competent in their field."
    The examination is fairly broad on general engineering principles - I would venture that most folks doing software these days would have a tough time passing it without some serious study - Used a Moody Diagram recently? How's your redox reactions? Know how to calculate the forces inside a beam under a specified load?
    Then, there's the six years of experience doing engineering under the supervision of another engineer (or under the industrial exemption).

  53. They killed the phone because by Anonymous Coward · · Score: 1

    They killed the phone because it was poisoned. Even if they fixed the problem, it was too late. Airlines were already banning the devices. Even if you offer a free fix, not every phone will get fixed. This means you can't tell the fixed phones from the unfixed ones, and they would stay banned. Who wants to be the company with the only phone banned from flying. They did the only thing they could. They shot the product in the head.

  54. Half a millimeter? by sabbede · · Score: 2

    Sounds disgustingly bulky to me. I'd rather burst into flames then have that gross nonsense packing my pocket. Ick!

  55. New battery by Anonymous Coward · · Score: 0

    Why did the replacement battery also catch fire? Was the replacement also not in-spec for safety? If so, that was a bad decision.
    I think if Samsung replaced the battery that was in-spec for safety and gave a small refund (or credit for a future samsung purchase, such as a microsd card) to each buyer, because of the lower capacity of a smaller battery, would have made the most sense.

  56. Theory seems pretty simple. by SomeoneFromBelgium · · Score: 1

    Bad indeed. If true.
    I mean: it would be a really stupid error to make on a flagship product. My hunch is (but I have no proof) that it's something different entirely.
    The theory of the article says that simply applying some pressure on the body would already create the explosion. If that were the case I think many more phones would have exploded. And weren't there cases where the explosion took place without anyone touching the phone?

    My little pet theory: the dendrites inside the ultra thin cells of the new type of battery were growing bigger than foreseen. In my mind Samsung engineers were aware of this potential problem that is strongly dependend on how you use your battery. I think (just my fatanasy) that they changed the software for charging the phone to keep the problem under control. They succeeded ... in the lab... and outside the lab...for the most part...

  57. The problem with adjectives by Anonymous Coward · · Score: 1

    Using adjectives, such as: "damning", in a summary is trash journalism. Might as well run National Enquirer stories on Slashdot if there's going to be no level of professionalism present in editing.

  58. Re:Theory without any empirical data to back it up by Anonymous Coward · · Score: 0

    You can certainly be a licensed professional engineer, but to do so requires you to stay within your field of expertise.

  59. Re:Theory without any empirical data to back it up by Anonymous Coward · · Score: 0

    I call such "software engineers" by a more accurate term: "Bob who is really good with computers".

    The problem there is hubris: People think because they're good at one thing they're good at everything, and as such are experts at finding the solutions that are clear, simple, and wrong.

    Then, when someone points out that they've created something that's not workable, they point out how clear, simple, and elegant it is, because all they can see is their very narrow field.

    Well-rounded individuals are rare. Those individuals with both soft and hard skills; who know the value of doing and also of communication; who can actually implement things using a specific skill such as programming, but also have the knowledge of systems to understand what they want to do and why. I think it's the duty of individuals who aren't so well rounded to at least recognise their limitations, so they can defer to people who fill out their weaknesses.

  60. Re:Theory without any empirical data to back it up by Anonymous Coward · · Score: 0

    ye olde sapper?

    Sappers lead the way!

  61. Re:Theory without any empirical data to back it up by Anonymous Coward · · Score: 0

    There's one major problem with your post: None of your "engineers" actually engineer anything.

    Engineering is the application of mathematics and scientific, economic, social, and practical knowledge in order to invent, innovate, design, build, maintain, research, and improve structures, machines, tools, systems, components, materials, processes, solutions and organizations.

    Your hairstylist is a tradesperson, but not engaging in engineering.

    The "copy engineers" are operators, not engaging in engineering (perhaps in another sense of the word, but not in the sense we're talking about here)

    The slave children are manual labourers, not engaging in engineering.

    The "parking engineers" are also mere operators, not engaging in engineering.

    By contrast, a "software engineer" could absolutely exist (and they do), as someone with theoretical and practical training on software design, who has worked under another engineer to gain practical experience in that respect, who uses that knowledge to produce software.

    Licensure takes that "engineer" and makes them a professional.

    Self regulation recognizes the maturity of a profession. It honours the special skills, knowledge and experience that a profession possesses.

    Self-regulation means that the government has delegated its regulatory functions to those who have the specialized knowledge necessary to do the job. The granting of self-regulation acknowledges a profession’s members are capable of governing themselves.

    By contrast, those who can't self-regulate merely have jobs, or occupations. They aren't professionals.

    Unfortunately, most "software engineers" are actually code jockeys. They have the equivalent of trade skills, they're capable of manhandling the tools to achieve results, but they aren't using a deep theoretical and practical knowledge to produce the best result, and they certainly don't follow the principles of professionalism.

  62. Re:Theory without any empirical data to back it up by JoeyRox · · Score: 1

    I agree, good design practices carry a lot of weight. But theories voiced as conclusions without any empirical evidence don't.

  63. Re:Theory without any empirical data to back it up by gweihir · · Score: 1

    Well, yes. But that is not what I get from the blog-post describing their conclusion. I do have personally observed the effect of LiPos getting thicker with use though. Hence I conclude that is a widely-known fact to battery experts and 10% spare space seems to be quite reasonable. I may be wrong on that one though, and I an not a battery expert.

    --
    Most ACs are not even worth the keystrokes to insult them. Be generically insulted by this and ignored otherwise.
  64. Re:Theory without any empirical data to back it up by JoeyRox · · Score: 1

    Samsung purportedly did an intensive engineering review of the design during the first recall and was unable to find the source of the issue, which lead them to incorrectly conclude that it must have been caused by a batch of bad batteries. I have to believe that the theories proposed in this article were well considered by Samsung during that review (if not during the design of the phone as well).

  65. Re:Theory without any empirical data to back it up by HornWumpus · · Score: 1

    Be fair, the EIT and PE have nothing to do with those skills. PEs aren't any more likely to be 'well rounded individuals' than any other technical person.

    The hubris you mention isn't limited to techs, need I point out...Lawyers and politicians. 'We write the laws, let's see about changing the laws of physics.'

    What you describe sounds more like the business/systems analysts fell on their faces. It isn't the programmer's job to know the industry in detail.

    --
    John McAfee 'It was like that time I hired that Bangkok prostitute; to do my taxes, while I fucked my accountant'
  66. Samsung has Lost Its Way by BrendaEM · · Score: 1

    I have a Galaxy Note 3. There has been no compelling reason to upgrade. I think there was one marginally better phone before the one that pen that stuck and the one that burned.

    What happened to Samsung that they can't make a phone anymore?

    --
    https://www.youtube.com/c/BrendaEM
  67. Thin is dumb... by Anonymous Coward · · Score: 0

    Quote: "In other words, the Galaxy Note 7 was designed to be as thin and sleek as possible, while containing the maximum battery capacity for long use..."

    Yet another casuality of the 'thinner is better madness." With the exception of the too-bendy iPhone 6 plus, Apple has managed to avoid disaster for its obsession. Not so Samsung.

    Both companies need to offer EL (for Extended Life) models for those who need a longer battery life and don't mind more thickness.

  68. 100x this... by gosand · · Score: 1

    I have a BLU Life One X, and it is pretty thin. When I first got it, someone at work said "can you shave with that thing?" I have long wondered why makers don't add a few more mm and make all that extra space battery. More battery life is probably the ONE feature that everyone can agree on. I mean, they had to invent cases that acted as supplemental batteries for crying out loud.

    --

    My beliefs do not require that you agree with them.

  69. Re:Theory without any empirical data to back it up by rpstrong · · Score: 1

    The testing was carried out by the company founders - CEO (Anna) and the CTO (Sam). Both of them hold MS degrees in mechanical engineering from Stanford University (click on their LinkedIn icons).

  70. I'll bet Samsung proved this would never happen by Anonymous Coward · · Score: 0

    They probably prevented pillowing by tightly controlling charge voltage, then tested a ton of batteries and a bunch of assembled phones simulating some sort of usage lifecycle, and conclusively demonstrated that all was well.

    But.

    1. Simulating the lifecycle of a phone has got to be incredibly difficult - I can't think of any consumer electronic devices that get so abused by heat, stress and strain. The phones in the real world may have been subjected to different stuff than the phones being tortured by robots in environmental chambers.

    2. Something might have changed after manufacturing commenced that invalidated the testing - e.g., a change in the battery manufacturing process, a voltage regulator had a die-shrink, or other change that affected control of the battery, etc.

    I'm not defending Samsung - good engineers and good processes should catch this kind of thing. But I've seen these kinds of things happen often enough, albeit not in products whose failures cause them to burst into flames in a user's pocket!

  71. Re:Theory without any empirical data to back it up by gweihir · · Score: 1

    From my experience with engineering screw-ups really large companies, I would say that it is likely that some people at Samsung did know the whole time what was wrong, but never were asked. Also take into account that some low-level design engineer would have to accuse somebody really high up of having screwed up badly. Even if that person has the integrity to do that, it is not going to be escalated up. Escalationg bad news is not a move that advances a career. Before I made those observations (fortunately all as an external expert), I had the same opinion as you just expressed. Not anymore. If anything, engineering screw-ups in large organizations are worse than in small ones.

    --
    Most ACs are not even worth the keystrokes to insult them. Be generically insulted by this and ignored otherwise.
  72. Re:Theory without any empirical data to back it up by Anonymous Coward · · Score: 0

    There's one major problem with your post: None of your "engineers" actually engineer anything.

    Alright, let's see is your criticism is valid, shall we? :-)

    Engineering is the application of mathematics and scientific, economic, social, and practical knowledge in order to invent, innovate, design, build, maintain, research, and improve structures, machines, tools, systems, components, materials, processes, solutions and organizations.

    No argument there. I am in complete agreement. that is a fine definition of engineering!

    Your hairstylist is a tradesperson, but not engaging in engineering.

    Well, that is a statement with nothing to back it up. Is not my hair engineer inventing, innovating, designing, building, maintaining, researching and improving structures? What is a hair style if not a structure? The evidence on its face clearly shows that you are incorrect. A hair stylist is a fine example of a hair engineer, engineering original hair styles using.. hair, which is clearly a structure, like a bridge, yet made of hair.

    The "copy engineers" are operators, not engaging in engineering (perhaps in another sense of the word, but not in the sense we're talking about here)

    Well. I thought you were going to make a case, an argument. That is not an argument, that is yet another declarative statement with no evidence to back of up your criticism of my label. Sentences are structures! Thus, literate journalists, by your very definition of engineering, are clearly engineering words (structures) out of letters, sentences (higher formed structures) out of words, and stories (higher yet formed structures) out of sentences. Nothing says an engineer must necesssarily work with steel beams, these engineers work with letters, words, sentences to produce stories, instead of iron and steel and cable to produce bridges. The pen is mightier than the sword!

    The slave children are manual labourers, not engaging in engineering.

    Again, you are not debating, but merely gainsaying my statements with no proof. This strategy is unconvincing. Look back at your engineering definition. Is it even possible to do anything whatsoever without applied mathematics? Are not textiles structures? They, in fact, are. Thread is woven, not unlike steel can be woven for structural strength. Textile workers are merely another kind of engineer, applying knowledge to materials such as thread, cloth, etc., to create more complex structures, clothing. They are, by your own precise definition, engineering their products.

    The "parking engineers" are also mere operators, not engaging in engineering.

    I guess maybe you have never seen an empty lot be maximized for space by parking engineers. What they are doing is using applied mathematics on the fly to engineer a parking structure, which is a structure made of cars, such that the space taken up by the cars is efficently utilized. That's engineering, bro.

    By contrast, a "software engineer" could absolutely exist (and they do), as someone with theoretical and practical training on software design, who has worked under another engineer to gain practical experience in that respect, who uses that knowledge to produce software.

    Licensure takes that "engineer" and makes them a professional.

    Self regulation recognizes the maturity of a profession. It honours the special skills, knowledge and experience that a profession possesses.

    Self-regulation means that the government has delegated its regulatory functions to those who have the specialized knowledge necessary to do the job. The granting of self-regulation acknowledges a profession’s members are capable of governing themselves.

    By contrast, those who can't self-regulate merely have jobs, or occupations. They aren't professionals.

    Unfortunately, most "software engine

  73. Re:I.e. Samsung acted recklessly for profit. But! by eionmac · · Score: 1

    If recalled and compensation paid or new phone, why law suit?

    --
    Regards Eion MacDonald
  74. Re:Theory without any empirical data to back it up by Anonymous Coward · · Score: 0

    Part of the code of ethics is only doing work you're qualified by experience or training to do. Unlike "bob who is good with computers", who is not held to any standard as long as they don't get themselves fired.

  75. Re:Theory without any empirical data to back it up by JoeyRox · · Score: 1

    I agree with all you wrote. I'd be interested to know what all was involved in their initial post-recall investigation that lead them to conclude the problem was with the battery itself and thus green-light the production release of the camera for replacements/new-sales.

  76. Re:Theory without any empirical data to back it up by Anonymous Coward · · Score: 0

    I think you missed my point. There can be software engineers. But not all programmers -- in fact, not many programmers -- are software engineers.

    I'm uniquely qualified to speak about the differences between engineers and tradespeople, because I've done both (Internet qualifications and all that jazz, caveat emptor).

    An operator is someone who takes something that is already built, and operates it. An automobile driver is simply operating a device, nothing more. Someone who works on an assembly line and commits rote actions to operate a piece of equipment is simply operating that equipment, nothing more. That isn't to say that operators don't have skills, it's just to say they don't have trade or craft skills, and they don't have the skills to design something based on sound engineering principles.

    A tradesperson is (ideally) someone who is taking something that has already been designed, or using pieces that have already been designed, and uses those tools and methods to complete a plan -- ideally, one that was created by an engineer. The skills a tradesperson learns are more about specific application of known quantities -- Running cables to code for an electrician, installing large mechanical equipment for millwrights, using scissors and combs and hair spray for hair dressers. They have craft skills, but they don't have the breadth of theoretical knowledge to design something based on sound engineering principles. At best, they can emulate previous experience. I do say ideally because sometimes tradespeople are put in the uncomfortable situation of designing stuff.

    An engineer is someone who actually designs a new something, or makes major design changes to something based on sound engineering principles. They are the one who is supposed to be doing the design, and their breadth of theoretical knowledge is how they have a chance at spending tens of millions of dollars of someone else's money and actually having a reasonable chance of a successful outcome at the end.

    Each person has their place, each person has unique and important skills, but each person is definitely not the other.

    Most programmers aren't mere equipment operators. Many programmers are basically 'code tradespeople'. Very few programmers are software engineers. Fewer still are professional engineers in any sense of the term.

  77. Re:Theory without any empirical data to back it up by Anonymous Coward · · Score: 0

    I should also mention that a software engineer certainly might be working on an "engine" as you consider it, in a way at least as real as an electrical engineer.

    For example, if an electrical engineer is designing a relay cabinet, or using karnaugh maps and other tools to determine the optimal logic gates for a purpose, that isn't substantially different than programming. Instead of physically wiring some chip I/O together, he or she could be using software to wire fpga I/O together, or implementing the same logic in software. If you're operating a multi-million dollar piece of equipment with relays, or with a software approximation of those relays, is one engineering but the other not?

    But that's why I say most programmers aren't software engineers, because the same level of sound engineering practice and theoretical understanding that goes into the relay cabinet ought to go into the processor memory. Otherwise, you're not really engineering, you're just playing around.

  78. Re:Theory without any empirical data to back it up by Anonymous Coward · · Score: 0

    Uh, what you describe cannot be an engine. An engine is a machine that does work. There is no software on the planet that can do work, work as in W = F x d. What programmers create is a metaphorical engine. Therefore, they are at best metaphorical engineers.

  79. Re:Theory without any empirical data to back it up by gweihir · · Score: 1

    Indeed. I would like to know that too.

    --
    Most ACs are not even worth the keystrokes to insult them. Be generically insulted by this and ignored otherwise.
  80. Re:Theory without any empirical data to back it up by HornWumpus · · Score: 1

    Engineering work. PEs are allowed to (slop paint/wrench their cars/fuck their wives) at their homes, just like anybody. Even if they aren't very good at it.

    --
    John McAfee 'It was like that time I hired that Bangkok prostitute; to do my taxes, while I fucked my accountant'
  81. Re:Theory without any empirical data to back it up by cwsumner · · Score: 1

    A Software Engineer is a person with degrees in both Electrical Engineering and Computer Science. As I do... 8-)

  82. Design a smaller battery and relaunch it then ? by robinsc · · Score: 1

    So if they replaced the battery with a more conventional smaller and less powerful one then the phones could still be used as phones...Might help to recoup some of the loss due to the recall..

    --
    Linkedin http://in.linkedin.com/in/robinsaikatchatterjee