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Death Grip Tested On iPhone Competitors

adeelarshad82 writes "Given Steve Jobs' recent claims about 'Death Grip' being a common problem among smart phones, PCMag tested out six major iPhone competitors to see how they would react to the grip. The test included Motorola Droid X, T-Mobile myTouch 3G Slide, Droid Incredible by HTC, BlackBerry Bold 9650, and the Samsung Captivate. The signal strength was measured in dBm, which typically ranges between -50 to -110 dBm (numbers closer to zero show better signal). Interestingly, the test results video showed mixed results. T-Mobile myTouch 3G and Samsung Captivate showed drastic changes, dropping down to -89 and -97 dBm respectively. On the other hand, while the signal strength dropped for HTC Droid Incredible, Motorola Droid X and Blackberry Bold, it wasn't as severe. Results of testing showed that not all phones reacted the same way to the typical death grip and required variations of it to bring about results."

49 of 373 comments (clear)

  1. Fascinating Conclusions by Jorl17 · · Score: 5, Informative

    I think that the Banana significantly outperformed the iPhone.

    No, really, I mean it.

    --
    Have you heard about SoylentNews?
  2. How many of them have bare metal antennas? by KonoWatakushi · · Score: 5, Insightful

    How many of them have bare metal antennas on the surface of the phone? No matter what weasel words Steve chooses, there is no excuse for this defect.

    So what if other phones require a "death grip" to affect signal strength? After all, all phones are subject to the laws of physics; if you block the signal, there is nothing the phone can do about it.

    1. Re:How many of them have bare metal antennas? by bonch · · Score: 4, Interesting

      The issue was the death grip affecting signal strength. You even used Apple's "physics" defense to state that it affects all phones. What does a bare metal antenna have to do with it if all phones are affected?

    2. Re:How many of them have bare metal antennas? by bonch · · Score: 3, Insightful

      Yeah, the recent advertising from Apple has been unlike Apple. In the past, they usually acted too cool to describe their products that way and would use a simple tagline to let the product speak for itself (e.g., "Introducing Mac mini" or "240 songs. A million different ways." for the iPod shuffle).

      Calling it magical is really corny, and so are the video interviews of Apple employees talking about how amazing it is. I liked the faceless, too-cool-for-the-room advertising from the time before the iPad.

    3. Re:How many of them have bare metal antennas? by WARM3CH · · Score: 3, Interesting

      The point is that iPhone 4 has 2 problems: one due to metal antennas (yes, there are two antennas and they should not be connected together) and another one due to the death grip. Apple basically deflected the question by talking only about death grip while the real issue was this specific design flaw that bare metal antennas could be bridged together if you hold the phone in a certain way. Anandtech showed that bridging bare metal antennas add another 10 dBm attenuation on top of what you get from death grip.

    4. Re:How many of them have bare metal antennas? by Nyeerrmm · · Score: 3, Informative

      While its absolutely true that a 'death grip' can cause signal loss on any phone, just as sticking it in a Faraday cage can, Apple is currently conflating two different problems. The first, where your hand blocks some signal is common to all phones.

      However, there is a second problem with the iPhone 4. When you touch it in the wrong place, you, a conductor, connect two different antennae that each are designed to work at a specific wavelength. When you bring the two together, and throw your body into the mix too, the antenna geometry is decidedly sub-optimal, and this can damage reception significantly. This second problem is why bumpers/cases are suitable correction to the majority of the problem.

      And I say this as someone who still plans to get an iPhone 4, because even while they hem and haw and obfuscate on the fact that there is a design flaw, they've taken appropriate actions to help those troubled by it, and if it really bothers me some tape or some clear nail polish should fix it.

    5. Re:How many of them have bare metal antennas? by donny77 · · Score: 5, Informative

      Sorry but you don't even know what you are talking about. I refer you to http://www.anandtech.com/show/3821/iphone-4-redux-analyzing-apples-ios-41-signal-fix. People are assuming "bridging" or "shorting" is the problem. Anadtech shows a 10db performance difference, they do not specify the cause. The redux article above clearly states they talked to metallurgists that stated stainless steel is a poor conductor, and your hand is a poor conductor.

      Find an old radio. Touch the middle of the antenna, it effects the sound quality. Now touch the tip of the antenna. It effects quality much more drastically. THIS is what the iPhone 4 is doing.

    6. Re:How many of them have bare metal antennas? by sexconker · · Score: 5, Informative

      The issue was the death grip affecting signal strength. You even used Apple's "physics" defense to state that it affects all phones. What does a bare metal antenna have to do with it if all phones are affected?

      Hello and welcome to the world of physics.

      Shit (both matter and energy) can interfere with electromagnetic signals, like those used by your cellular telephones.

      When reception is hindered by your hand, the concrete in your building, or whatever else, we say the signal is "attenuated".

      Modern devices can handle a large range of attenuation before showing any negative effects, and they can handle even more attenuation before the fail completely.

      All cell phones experience attenuation.

      The iPhone 4 experiences attenuation, but it also experiences detuning. Detuning is what happens when you alter the electrical length of your antenna.

      You see, kids, antennas need to be "tuned" to a specific frequency. When you move the dial on a radio, you're altering the electrical length of its antenna. By changing the electrical length of the antenna, the antenna then receives signals on a different frequency.

      The electrical length of antenna is a combination of its physical length and some electrical properties of the material its made out of, such as the antennas total capacitance - its capacity to hold electrical current.

      Unlike attenuation which gradually weakens a signal, detuning instantly and dramatically cuts the reception of a signal. Consider an old radio. Tune to your favorite station. Then turn the tuning knob to the left or right. You'll find that your favorite station is gone, and you're now listening to something in Spanish!

      The iPhone 4's antennas become detuned when human skin or another conductor bridges the cellular antenna's bezel with the next bezel, another point on the case of the phone, or just the skin. This is due to a design flaw in the antennas. Apple decided to make external, conductive antennas on the body of a portable device. This, by any measure, is fucking retarded.

      I hope you have enjoyed your brief visit to the world of physics! If you would like to know more, you can go fuck yourself.

    7. Re:How many of them have bare metal antennas? by WARM3CH · · Score: 4, Informative

      You still don't get it, do you? The test is fine. They did exactly same thing, with and without a glove. 10 dB difference. Difference is due to insulation. End of story.

    8. Re:How many of them have bare metal antennas? by nine-times · · Score: 4, Funny

      Well there are more problems than those two. There's:

      • An apparent design flaw that makes the phone lose reception under certain circumstances
      • The fact that all cell phones can lose reception due to hand placement, which varies by design and how you hold the phone
      • The myriad of Apple haters who will jump on any possible angle to talk about how evil Apple is, how crappy Apple products are, how superior Apple's competitors are, how the only reason to buy Apple stuff is if you're a retarded hipster that drank the kool-aid.
      • The massive number of whiney-bitch Apple customers who get upset that their Apple device is capable of being scratched, does not have a battery with infinite capacity, does not grant super-powers, and does not have [insert illogical feature here].
      • The Apple faithful who would not say a single bad thing about their iPhone under any circumstances. If iPhones started exploding in people's hands, these people would say, "Well I'm actually glad it's doing that. It's saving me the trouble of having to cut my hand off later in preparation for the new Apple's new bionic iHand. I heard a rumor Apple would be releasing bionic prostheses next fall."

      As someone sitting on the sidelines, I don't know how to sort it all out. How much of this problem is caused by the apparent design flaw? No point in answering that question-- I won't trust you.

    9. Re:How many of them have bare metal antennas? by iammaxus · · Score: 4, Informative

      and if it really bothers me some tape or some clear nail polish should fix it.

      It is possible that clear nail polish will do very little to mitigate the problem. At those frequencies, capacitive coupling can be as good as a DC conducting path. The bumper adds a millimeter or so of space which reduces the capacitive coupling as compared to nail polish.

    10. Re:How many of them have bare metal antennas? by catmistake · · Score: 4, Informative
    11. Re:How many of them have bare metal antennas? by nathanh · · Score: 3, Insightful

      Actually the guy doesn't know shit. You know how when you got to junior high you discovered they'd taught you simplified BS versions of science and history when you were younger? Then when you get to senior high you discover the stuff you got taught in junior high was also simplified BS? Then when you get to university you discover even senior high was teaching you simplified BS? I stopped there, but I bet if I'd kept studying I would discover I was taught simplified BS in university as well.

      Well this guy is spouting the junior high BS version of how radios work. It's wrong. He's wrong. But he's an arrogant prick, which often passes for authority on the Internet. Take this nonsense:

      " When you move the dial on a radio, you're altering the electrical length of its antenna. By changing the electrical length of the antenna, the antenna then receives signals on a different frequency."

      Total rubbish. Not even close to reality. On old-school radios the dial changed the reactance of a resonant circuit which is then fed to a detector. The antenna continues to "receive" all the same RF frequencies. Modern radios don't even have dials (or more to the point, any dial that does exist is not a direct reactance control). None of this has any relevance to mobile phone radios and antennas.

      This is the problem with the iPhone 4 "antenna gate" story. A bunch of dolts start spouting off crackpot theories, with no real knowledge or understanding of how radios work, or a simplified understanding based on AM and VHF radios, and a huge echo chamber then repeats the nonsense.

      I'm quite content to say "I don't fucking know" if the iPhone 4 antenna design is good or bad. I know just enough to know that I know next to nothing at all about mobile phone radios. But given the choice between Apple's engineers, who have actual doctorates in mobile phone radio theory, and some ignorant Slashdot schmuck's BS explanation of radios... well you figure it out.

  3. Enough already! by Ecuador · · Score: 3, Insightful

    How many more stories about this crap? The holy iPhone has a small defect. Guess what, it is not the biggest problem that the "form over function" philosophy has brought to the device. Those who value form will always buy the stupid device, its ability to complete calls (if you don't hold it the wrong way) is just an extra.
    As for the "death grip". We were not talking about any death grips, that was never the issue and people don't usually hold their phone like that. The problem was with simply touching the device at the bottom corner and only the iPhone 4 has a problem (for "why" and "does it matter" see first paragraph of post).
    And can we get on now? This is getting more annoying than dupes.

    --
    Violence is the last refuge of the incompetent. Polar Scope Align for iOS
  4. Both hands?? by markdavis · · Score: 4, Insightful

    "[HTC Incredible] By using a death grip of both hands covering the phone we saw the results go from -57 to -64 dBm"

    "[Droid X] can be difficult[...] We used two hands on this larger phone."

    "[BlackBerry Bold] was a little more resistant [...] hold of it with two hands, we saw the signal strength go from -80 to -87 dBm."

    Yeah, cause covering the entire phone with two hands is a perfectly normal way that people would ever use the phone. I bet if I shoved a smart phone up my a**, it would lose a lot of signal too...

    1. Re:Both hands?? by MooseMuffin · · Score: 5, Insightful

      The iPhone4 was accused of having a flaw where touching a single spot on the phone can significantly degrade its signal and Steve Jobs successfully managed to change the discussion to two-handed death grips of other company's phones. Unbelievable.

    2. Re:Both hands?? by Anonymous Coward · · Score: 5, Insightful

      You seem to have entirely missed the point. There are two issues:

      First, if you hold *any* phone such that your hand blocks the antenna, you lose signal strength.

      Second, if you touch a particular spot on the iPhone 4, you bridge two antenna and lose signal strength.

      The second one affects only the iPhone 4, and is what people are complaining about. A rubber case fixes the problem. The first one affects every phone (including the iPhone 4), and a case will do *nothing* to fix it. Steve Jobs pulled a bait and switch: first he admitted that the iPhone has the first problem, and then he said that this was okay because every phone has the second problem. And then to avoid legal trouble he gave you something that fixes the first problem.

  5. Dropped calls by bonch · · Score: 5, Insightful

    One of the things I've wondered about is that Apple said the iPhone 4 does drop more calls than the 3GS. However, the iPhone 4 gets reception in locations the 3GS doesn't, so if iPhone 4 is dropping calls in situations where the 3GS wouldn't even have bars in the first place, it makes it look worse than it is.

    1. Re:Dropped calls by kumanopuusan · · Score: 3, Funny

      Saying the Iphone4 is better then it's predicessors is like saying the DDR (West Germany) was better then the Soviet Union. Technically it's true but that doesn't make the DDR a nice place to live.

      If West Germany was that bad, I don't even want to know what East Germany was like.

      --
      Use of the words "good", "bad" or "evil" is almost invariably the result of oversimplification.
  6. What the!? by Zironic · · Score: 5, Insightful

    They're seriously comparing phones that lose signal with a standard grip to phones where hold the phone with both hands deliberately trying to cover the antenna and pretend the result is somehow meaningful?

    Wouldn't a sane signal comparison compare them using reasonably common grips? It's sorta stupid to say "When you deliberately cover both antennas with an awkward two hand grip it'll lose 10 dBm", everyone knows the antenna will lose signal if you cover it, the point is that the iPhone is so easy to cover by accident.

    1. Re:What the!? by ArsonSmith · · Score: 5, Funny

      It's not a question of where he grips it. It's a simple question of attenuation ratios.

      --
      Paying taxes to buy civilization is like paying a hooker to buy love.
    2. Re:What the!? by Jah-Wren+Ryel · · Score: 4, Insightful

      They're seriously comparing phones that lose signal with a standard grip to phones where hold the phone with both hands deliberately trying to cover the antenna and pretend the result is somehow meaningful?

      Of course it is meaningful - by showing that you have to go extreme measures to get even a watered-down version of the effect on these other phones it means that Jobs was full of shit when he made that claim about other phones having similar problems.

      --
      When information is power, privacy is freedom.
    3. Re:What the!? by SETIGuy · · Score: 4, Funny

      All the iPhones on the planet don't stop working when Apple releases a new one.

      You'd never know from the users. I'm tiling my bathroom with 3g's.

  7. Re:If everyone jumped off a bridge... by david_thornley · · Score: 3, Insightful

    Because, in competition, that's all there is. A phone will do better or worse in the marketplace based on how it compares to its possible substitutes, not how good it is in any absolute sense. If the iPhone were unique in losing signal depending on grip, it would be a serious mark against it and indicate that Apple was particularly inept. Since many other phones lose signal depending on grip, it's not a competitive disadvantage, and it doesn't mark Apple as inept.

    It's sort of like proving that a problem is NP-hard. You don't know that there isn't a nice efficient exact algorithm to solve it. You do know that a whole lot of intelligent people have put in a great deal of work over decades and not found one.

    --
    "When you have eliminated the unacceptable, whatever is left, however improbable, must be the truthiness" - Holmes
  8. Re:So Jobs is not a liar? by david_thornley · · Score: 5, Insightful

    What's this "completely lose all signal"? I haven't seen any source for this. What I've seen is that there is a large drop in sensitivity if you hold the phone in a certain manner. If you have any reference to a complete loss of signal, please post it. If not, please stop claiming there is such a loss.

    I can lose connection out here, because AT&T has low signal strength out here. I can't where I live. That suggests to me a significant but not total drop in sensitivity.

    --
    "When you have eliminated the unacceptable, whatever is left, however improbable, must be the truthiness" - Holmes
  9. Re:I think this confirms what Jobs was saying by donny77 · · Score: 5, Informative

    All of these phones CAN drop calls and lose service, it all depends on the starting signal strength. The iPhone 4 doesn't automatically lose service or drop calls either. In medium to strong signal areas it works fine EVEN touching the dreaded antenna spot. The only reason this is being discussed is Apple pointed out the external antenna.

  10. Re:So Jobs is not a liar? by Moridineas · · Score: 3, Insightful

    I thought the iPhone4 would only lose all signal if you're already in a low signal area?

    That is, for all these other phones that lost signal strength, if they were in a low signal area, they could very well lose all the signal as well?

  11. Re:So Jobs is not a liar? by BlackSnake112 · · Score: 4, Interesting

    I know seven people with iphone 4s. All seven of them have dropped calls, or lose signal completely if they hold the phone in their left hand. If they leave the phone on a table it works fine.

    With seven people out of seven people have the exact problem I would say there is a problem. They can repeat the problem over and over again. It is a design flaw. Five out of the seven are lefties who normally hold the phone in their left hand. They are really annoyed.

  12. Death Grip = Force choke? by zill · · Score: 3, Funny

    You may have joined the dark side and control an entire evil empire, Mr. Jobs, but you are not a Sith Lord ... yet.

  13. Re:What does this mean: by phoenixwade · · Score: 4, Funny

    A phone in the hand has the DBm of two in the bush. iPhone there for iAm.

    None of the phones cited were designed to be stuck in your bush.

    --
    A positive attitude may not solve all your problems, but it will annoy enough people to make it worth the effort.
  14. Re:If everyone jumped off a bridge... by E+IS+mC(Square) · · Score: 3, Insightful

    Since this article clearly shows others phone do not drop signals like the way iphone does, it does make apple inept, no matter how you want to spin it. Steve Jobs is a megalomaniac who wont accept the fact that his device was crap, and that his company lied showing more bars then what was real. But because of fanbois like you, he thrives.

  15. Re:If everyone jumped off a bridge... by MobileTatsu-NJG · · Score: 4, Insightful

    Why is the standard response for anything anyone is caught doing is to reply that someone else is doing (insert catch word lie: more|also|worse|longer) than we have.

    Imagine you've work with 10 people in one room for the last 3 years. At some point you say or do something that offends somebody else. From then on these people you work with take every little quirk you have and blow it out of proportion and endlessly crack jokes about it. Maybe one day somebody thinks you left the bathroom without washing your hands. Another day one of your neighbors is evicted and through some questionable rationale that was your evil doing, too. Every two weeks or so, a new thing comes up to heckle you about but nothing really sticks. One day, fatefully, you drop a pen. You bend over to pick it up and *Frrpbbtbt*, everybody hears you fart. Then, for the next 22 days, you sit there and listen to fart jokes and comments about how much you stink, how brown your undies are, and how everybody in the world pinches their nose when they around you.

    Let's not sit here and pretend like the first words out of your mouth wouldn't be: "Yeah, right, like none of you ever fart."

    --

    "I like to lick butts!" by MobileTatsu-NJG (#32700246) (Score:5, Informative)

  16. Re:So Jobs is not a liar? by bonch · · Score: 3, Informative

    The problem with the iPhone is that the simple act of holding it normally can cause it to completely lose all signal....No other phones have this problem, that is why it has never come up before.

    There are countless videos on YouTube submitted by users demonstrating the same effect with non-iPhones, and Apple has posted their own antenna page with videos of competing phones losing signal. It seems to be an issue in low-signal areas and is a fact of life for all smartphones.

  17. Re:So Jobs is not a liar? by NatasRevol · · Score: 3, Informative

    "No other phones have this problem"?

    Riiiight. Then why do ALL of their manuals tell you NOT to hold it certain ways which decrease signal strength?

    http://dontholditwrong.tumblr.com/

    If Apple put the 'death grip' in their manual, would everyone be ok with that?

    --
    There are two types of people in the world: Those who crave closure
  18. Re:So Jobs is not a liar? by pete-classic · · Score: 4, Informative

    There must be huge variation from iPhone 4 to iPhone 4. I'm right handed and almost always hold my phone in my left hand. (I keep seeing stories that suggest that this problem affects lefties more, because they hold their phones with their left hands, but this seems backwards to me.)

    I can't detect any problem with holding my phone in my left hand. I do see a substantial improvement in apparent coverage. Works reliably in my office, where my iPhone 3g was spotty at best. Voice works (but data sucks) in the basement of my office, where I had NO coverage before. I can only attribute this to the antenna redesign.

    I think there must be some marginal phones out there, but it seems that there are a lot of iPhone 4s out there that are working well. And I think there's an aweful lot of hype around this problem. Maybe the lesson is that if you live by hype you can die by hype?

    -Peter

  19. Re:So Jobs is not a liar? by Serious+Callers+Only · · Score: 4, Insightful

    They are really annoyed.

    Why haven't they taken the device back for a refund? I know if I purchased a phone that didn't work properly I'd just take it back. This is the best way to teach Apple a lesson about quality control, if they are selling defective phones/phones which don't work with AT&T/phones you don't like/phones you can't hold normally - they should pay for it with a huge return rate. Take your pick of the list of purported reasons, whatever it is, if it's serious enough to lead to lots of dropped calls, why bother with the phone?

    Luckily, I bought one of the magical iPhone 4s which isn't affected by any problem with dropped calls (0 over the last month), so I won't be returning mine.

  20. Re:I think this confirms what Jobs was saying by jerdo · · Score: 5, Interesting

    I have an iPhone 4 and I've been able to drop to no bars in the same spot I had 5 bars previously, so in my experience the "depends on how strong the original signal is" argument doesn't stand up. I can stand in the same spot (so the signal strength shouldn't be wildly different) and experience little to no signal loss with a clean dry hand touching the lower left corner, but if my hand is damp from perspiration or the natural build up of oil I experience a drop to zero bars in a matter of seconds. All this makes sense though, since the salty sweat/oil should be more conductive than a clean dry hand. I like the iPhone, but I don't care for the apologists who refuse to admit there is a problem anymore than I care for the company that won't admit there is an issue.

  21. Re:I think this confirms what Jobs was saying by unix1 · · Score: 5, Insightful

    The only reason this is being discussed is Apple pointed out the external antenna.

    Yes, but you didn't go all the way. It is being discussed because the design of the external antenna on iPhone4 is such where connecting the miniscule seam on the lower left side with a conductive material (e.g. your hand, keys, etc.) causes dramatic drop in the signal. Touch of a finger, while holding your phone in a perfectly normal way, can cause this.

    This is not to be confused with the "death grip" shown in these videos where they are attempting to cover phones' internal antennas with both hands. In fact it's purely coincidental that the "death grip" that may or may not cover the internal antennas (depending on its location) is also connecting the 2 antennas on the iPhone4 with the bottom of your palm.

    There is no single "death grip" issue shared between iPhone4 and other phones - this is just what PR Apple used to drag others into the discussion. There are 2 distinct problems:

    1. cover internal antenna(s) to "lose" signal
    2. touch iPhone in a lower left side to "lose" signal

    Some people are saying (2) is way more common and annoying and some are saying it should never have been designed that way. That's why it's being discussed.

    That's not to say that it hasn't been discussed enough already. But Apple dragging others into it prolonged it, IMO.

  22. Re:If everyone jumped off a bridge... by sexconker · · Score: 5, Insightful

    The problem with your analogy, is that farting is natural, unharmful, and cannot be helped.

    Lying, cheating, and treating people like shit?
    Even if you want to claim it's natural in a competitive, it sure as fuck is harmful and it sure as fuck can be stopped.

  23. Re:If everyone jumped off a bridge... by DJRumpy · · Score: 4, Insightful

    You mean like these videos?

    Death grip on Droid X, EVO, Droid Incredible, Nexus One, Galaxy 1, G1, etc.

    * Droid X: http://www.metacafe.com/watch/yt-kFc..._with_droid_x/

    * Samsung I9000 Galaxy S: http://www.youtube.com/watch?v=LROTHrTR92k

    * HTC Evo Signal Attenuation: http://www.youtube.com/watch?v=2pj2YBYTbag

    * Samsung Galaxy 1:http://www.youtube.com/watch?v=

    * Samsung Galaxy 2:http://www.youtube.com/watch?v=oPCQdYtPihg

    * Droid Incredible: http://www.youtube.com/watch?v=eaDE941PzQk

    * Droid Incredible (With Network Extender in Room): http://www.youtube.com/watch?v=VpEQH...eature=related

    * Nexus One: http://www.youtube.com/watch?v=qEIA_lMwqJA

    * Nexus One vs. iPhone (start at 1:29): http://www.youtube.com/watch?v=NvMoV4_C4aA

    * Nexus One: http://posterous.com/getfile/files.p...n_-_iPhone.m4v

    * Nexus One (after Google's update to correct): http://www.youtube.com/watch?v=x2g5J4qPp54

    * Nexus One: http://www.youtube.com/watch?v=deCkjeHYT-g

    * Android G1: http://www.youtube.com/watch?v=3CDaxhjUs9M

    * "Major signal degradation when Nexus One is picked up" (N1 Thread on On this Problem): http://www.google.com/support/forum/...9184c33e&hl=en

  24. Re:So Jobs is not a liar? by makomk · · Score: 4, Informative

    Let's do what the article should've done and quantify it. The worst signal loss they could get from the other phones by death-gripping them is about -14 dB. They didn't provide figures for the iPhone 4, probably because Apple makes this hard to find out, but IIRC it's been measured at -24 dB. That means that if you death-grip the iPhone 4 your signal is reduced to about 1/200th of what it was, and if you do the same to the worst of the normal smartphones it's instead reduced to 1/20th.

  25. Re:If everyone jumped off a bridge... by DJRumpy · · Score: 4, Insightful

    Given that many of the phones in the links above drop upwards of 30 dBm, I'd have to say your full of shit, as 30 dBm in a mediocre signal area is certainly enough to cause a phone to drop a call, regardless of carrier, make, or model. If you started with -80 dBm, which is decently strong, you could drop to -110 and drop easily. These are not typical gorilla grips either, but just people holding the phone in their hand.

    It happens on all phones, and to suddenly claim only Apple branded signal loss is 'evil' is a bit silly.

  26. Missing the forest for the trees by PPalmgren · · Score: 5, Informative

    People, people, people. Its not about the death grip. Its not about general signal loss on all phones.

    It is about the magnitude of signal loss. According to Anand's article, the iPhone 4 loses 20 dBm from holding it naturally with the antenna gap covered. That is 30% of the signal range. No other phone can acheive this signal loss, even with the death grip. Most phones 10 dBm or less, or better, even with a death grip. The magnitude of the iPhone 4's signal loss is 100% higher, or more, than all of its competitors when held naturally. This is abysmal, and makes it very hard for the user to predict whether his call is in danger or not. The bar change helps this a bit, but it doesn't take away the fact that a vanilla iPhone 4 has a signal handicap on all of its competitors due to shitty engineering.

  27. Re:Death Grip?? by mjwx · · Score: 3, Funny

    I think the Death Grip is referring to the relationship between Steve and the Fan-boys..

    Steve: "you have failed me for the last time"

    Steve holds out hand

    Fanboy: *hurk*

    --
    Calling someone a "hater" only means you can not rationally rebut their argument.
  28. Re:If everyone jumped off a bridge... by Jezza · · Score: 3, Informative

    Reading the article (I know actually reading the article before posting - what's fsck'in wrong with me?) it says some phones were affected by a similar "death grip" - so that's the same, isn't it?

    Of course, this is really easy to reproduce because Apple put a line across the area that if covered affects the signal strength - other phones you have to kind of guess. That makes it really easy to reproduce the effect on the iPhone 4, and I suppose easy to avoid (don't cover that area). Other phones it's hard to reproduce, and also hard to avoid (unless you find the "drop spot" and put a marker on it - so you know where not to touch).

    It is also true that some phones have far less of an issue (in the case of the Droid where two hands were required, it would be hard to see this as an actual problem as it's actually quite difficult to reproduce and is not likely to happen in practice). So clearly when Steve said this is a problem for the whole industry that wasn't the whole truth - it's an issue, but some phone seem to have it pretty well mitigated.

    From what I understand for a lot of phones it isn't covering an side of the phone that manifests this effect; if you have significant contact with the rear of the phone it can cause it. This is quite common. Again, the exact location(s) vary and may mitigate it (like the Droid).

    But this doesn't seem at all unique to the iPhone 4, but it isn't quite as "universal" as perhaps Apple would like us the think. It's just something we'd never thought about before.

  29. Re:If everyone jumped off a bridge... by Moridineas · · Score: 3, Informative

    And then he goes on showing EVERY PHONE does that.

    I think you must be confused by something? They showed 3 different phone brand/OS combos that by holding in a certain way could loose substantial signal. Yes?

    NO - they don't do THAT while holding it THAT WAY.

    Parse error...care to restate?

    So, yes, he lied and did not accept that iphone was the only phone which did something wrong.

    I'm lost...what's the problem? Do you not agree that some phones can lose signal by being held certain ways? What's the lie?

  30. Re:So Jobs is not a liar? by jimfrost · · Score: 3, Informative

    It's not just smart phones. I had aNoxia 97xx that would drop calls if held a certain way. It always seemed obvious to me that it was attenuation.

    Having said that,I thought Apple was nuts to expose the metal, and had presumed originally that it was covered in clear polymer. Every school kid radio fan knows what happens to the signal if you grab the antenna, right? So why would you make a phone with a naked antenna?

    On the other hand I've played with a few 4s and the issue is IMO not nearly as severe as the tempest would imply, and while most people I know can reproduce the problem several indicate that the phone works in places where previous models didn't. If I were in the market I would still buy one. I would use a case as a matter of course anyway (put one on the 3gs immediately, have you seen what these things cost?). Not Apple's case, I swear Apple has no idea how to make a good case.

    --
    jim frost
    jimf@frostbytes.com
  31. Re:If everyone jumped off a bridge... by Em+Ellel · · Score: 4, Funny

    Reading omprehension fail! Did I say no other phone drops bars AT ALL?

    Only iphone loses signal so much as to drop calls.

    Go on - try spinning it again.

    This is absolute crap argument, death grip does not cause iPhone to drop calls, it is fully capable of dropping calls without it.

    --
    RelevantElephants: A Somatic WebComic...
  32. Re:If everyone jumped off a bridge... by Steve+Max · · Score: 5, Insightful

    In every phone, it's not "touch this spot and your call is gone", it's "cover the antenna and the signal goes down". Remember that water absorbs microwaves, so your hand (~60% water) will attenuate the signal. Even with the iPhone 4, if you don't touch the exact spot but cover all of the GSM/HSPA antenna, your signal will drop. In my old Nokia E62, I can get a ~15 dBm drop if I cover the whole top of the phone with my hand. Notice that most (non-touchscreen) phones have their antennas on the top because of this: you usually don't hold your phone there, so you won't attenuate the signal. Touchscreen phones are a different beast, because they're made to be used both in portrait and landscape modes; in landscape, you do touch the "top" of the phone. That means you need either a bigger antenna, or two antennas (like the Droid X). A bigger antenna on the bottom is used sometimes, because that's not where you usually hold the phone when in landscape mode. Problems with signal attenuation are very common (and more so with touch phones), but that's not the issue with the iPhone 4.

    The issue with the iPhone 4 is that you can introduce a very high level of noise by bridging two separate antennas by touching the phone in a place where you would usually touch it. External antennas very close together are the problem. The noise added is what makes you drop calls, not the signal attenuation (you get so much noise that the phone can't find the signal). No other phones have this problem. Antenna design is one area where there are thousands of very smart people trying to get even the smallest improvements. You'd think someone would have thought about putting the antenna outside the phone on the past 10 years, if it was viable. Apple tried (and with some improvements, it could even become viable some day), and now they realize why nobody did it before.

    Apple is trying to make their issue (the basic antenna design) look like the common issue (water absorbs microwaves). There's nothing you can do about signal attenuation, except keeping the antenna as far away from your hand as possible; but Apple could have designed the phone differently, and reduce the possibility to bridge the two antennas. The iPhone 4 problem is nothing like the problems other phones show, despite showing the same symptoms (lower call quality, possibility to drop calls, etc).