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iOS Update May Tackle iPhone 4's Antenna Problems
DJRumpy was one of several readers to point out rumors that Apple will soon be deploying an update to iOS 4 to combat the iPhone 4 antenna problems we discussed last week. This could be good news for users of the 1.7 million iPhone 4s purchased during the first three days of its release. (And no, Daily Mail, Steve didn't announce a recall, though there's speculation that this problem could be a boon for Android.) An anonymous reader notes an analysis of a teardown of the phone, which found that its parts collectively cost about $188, with the most expensive part — the LCD screen — costing $28.50 by itself. In other Apple news, Germany has demanded that the company "immediately make clear" what data it collects from customers, and what use it makes of that data (perhaps spurred by Google's Wi-Fi sniffing debacle).
The fix is expected to address a issue in iOS 4 related to radio frequency calibration of the baseband. Readers who saw the original forum discussions say that the issue is believed to occur when switching frequencies; because the lag is allegedly not calibrated correctly, it results in the device reporting "no service" rather than switching to the frequency with the best signal to noise ratio.
iOS 4 introduced some enhancements to how the baseband selects which frequencies to use, so it makes sense that the error may have crept into those changes. Additionally, this explains why iOS 4 has also caused similar problems for iPhone 3GS users.
Alexander Peter Kristopeit bought his basement from his mommy for one dollar.
Frequency calibration apparently http://www.appleinsider.com/articles/10/06/25/death_grip_hysteria_may_end_monday_with_ios_4_01.html
I call name collision. Please refer to the iPhone/iPad operating system as something other than IOS because Cisco used it first.
We are all glad that you noticed so quickly. However, the name of the iPhone and iPad operating system _is_ iOS and Apple is paying Cisco license fees for the use of the name. So since Cisco agrees with Apple's use of the name, I think that settles the matter. And all of this was known weeks ago :-(
The information I saw stated that they change the antenna priority from 'strongest signal' to 'most reliable', whatever that means. This change was introduced in iOS4. The same issues have also been reported in iPhone 3G and 3GS, which would seem to reinforce the idea that this may be software related. Although having the antenna's outside the case may exaggerate the issue, it does not appear to be the primary factor.
iPhone 3G: http://www.youtube.com/watch?v=tsfgAXmK0b4
iPhone 3GS: http://www.youtube.com/watch?v=x9ztRup6cLs
General YouTube results:
http://www.youtube.com/results?searc...gnal+ios4&aq=f
Additionally, here is the link that I first found reporting the antenna priority change:
http://www.electronista.com/articles...rly.next.week/
It will be interesting to see how Apple handles this. I recall they had similar issues with frequencies on the first generation iPhone.
If the issue was strictly related to the external antenna's, we wouldn't be seeing this issue pop up once 3G and 3GS users upgraded to iOS4.
... the iPhone 4 was designed to look for towers with lower congestion, even if they might have a weaker signal.
That sounds strange. Only while in idle mode (no calls in place) a GSM/UMTS phone has some autonomy to select the cell site to which it will "listen" to.
If the iPhone follows the UMTS standards, while in a call it reports received signal information from neighboring cell sites (or towers) to the network, and the network then decides which cell site(s) the phone will use (or switch to, what is called handoff). The phone has to obey the network's decision, so the only way that the phone software could affect the cell site choices would be to send "fake" (or wrong) received signal information back to the network (which would violate the GSM/UMTS standard).
As do all handsets
This is not true. Handsets used to have thest things called "antennae" that stuck out of the body of the unit.
They actually got better reception when held because the human body holding the handset made the other half of a dipole.
In new designs with the "antenna" buried in the phone, the human body just couples ground to itself and becomes a thicker shield.
The phone is not in charge of decisions at that level, sorry.
:)
That's like each a commuter on a train deciding when the train will leave the station....
Loads are governed by the cell network hardware. Some phones are in cars, moving thru rapidly and they may leapfrog...some are still and they may get priority. For those networks that 'breathe' (expand and contract based on load), it would be especially hazardous if the devices could negotiate which cell on their own....not going to happen
I have one. I can indeed shave a bar off the signal strength meter by nestling the lower-left corner into my palm. Practically speaking, I haven't had any dropped calls or any problems at all. In fact, I see a larger fluctuation in signal strength just walking around my house. For me, this is such a non-issue that it's kind of mind-boggling to see so many discussions about this. I guess I don't care about my iPhone 4 as much as most people seem to.