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06-26-2010, 08:43 AM #521
I am having a different signal issue in addition to the holding it problem. Sitting at my desk I have my iphone 4 and my wife's iphone 4 sitting side by side. Both have 90%ish charge, and neither of them is plugged in. If i reboot them both they go to either 4 or 5 bars,they sort of bounce around a bit, which has always happened in the past. As they sit there for a while, one of the phones will suddenly drop down to 3-2-1 then zero bars, while the other one, sitting just beside it stays at 4 or 5 bars. Suddenly, I can no longer make calls with the one that dropped signal. If I leave it alone for a while it will eventually return to full strength, and work fine. Now all the time, and I'm talking about 5-10 minutes or so the other phone is 4 bars. Now after a bit the 2nd phone suddenly drops down to zero bars, probably over the course of a couple minutes, while the original one, that dropped earlier stays at 4. Now the second phone can't call out.
I had noticed my first phone dropping its signal strength before, but I wanted to check to see if it was a bad phone or at&t. Now it looks like they are both randomly losing signal, which of course exasperates the loss of signal when I am holding it.
Fun stuff, I wonder how the droids are.
06-26-2010, 09:02 AM #522
I copied this from the article linked below.
AppleInsider | Death Grip hysteria may end Monday with iOS 4.01
Identifying the problem
Clear observations of mobile signal strength and how they are affected by the placement of users' hands are difficult to perform in part because there are multiple factors involved in receiving a mobile radio link, including outside interference and the conductivity or mass of different people's hands.
Additionally, cellphones in general (and in particular the iPhone) have always only presented a very rough approximation of signal strength in the signal bar display, averaged over time. It appears that iOS 4, more so than previous iPhone software, presents a less accurate signal meter, showing less signal at times than an iPhone 3GS while still being able to achieve the same or better call quality.
This has led some to jump to the conclusion that the reception problems noted by some iPhone 4 users are the sign of a hardware design flaw related to its stainless steel band antenna design. Apple's chief executive Steve Jobs stoked a whiplash of blogger frenzy when he reportedly responded that users "were holding it the wrong way," blocking the signal with their hands.
A variety of people have demonstrated identical problems with other phones, from the Android based Nexus One to the iPhone 3GS. Yesterday, my wry tweet, "Blocking iPhone 4 antenna kills reception. Blocking mic kills audio, and covering the screen makes it impossible to see Retina Display" made it to the front page of Twitter and was retweeted more than a hundred times by people following the hullabaloo.
However, the fact that problems observed in the iPhone 3GS are much more pronounced when the device is upgraded to iOS 4 indicate that there is also a software issue involved in the matter. iPhone 4 users can't downgrade to earlier versions of the core software, making it impossible to compare its relative performance.
Software fix in the works
Readers report that Apple's tech support forums originally confirmed that a iOS 4.0.1 software fix addressing the issue would ship early next week (as early as Monday), before the comments were subsequently taken down along with all the other related discussion about the matter.
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.
Additional readers have shared other related experiences that also corroborate the idea that the issue is related to iOS 4's software control of the baseband, including the fact that the issue seems easily reproducible when connecting to a WWAN 3G network but does not appear when connecting to a Microcell 3G. If the problem were simply hardware related issues of the antenna design, it should only affect iPhone 4 units with that new design and should occur at all times, regardless of the tower type. That is not being observed.
Talk to the hand
The core software problem is likely augmented by hand placement, as Jobs noted in pointing out that holding the new phone (or any mobile device) in such a way that attenuates the signal should simply be avoided.
Yesterday, antenna design expert Spencer Webb posted his early appraisal of the situation, noting that the FCC mandates that cell phone antennas need to be positioned as far away from the user's head as possible, effectively forcing antenna placement in the bottom of the phone, where it is most likely to be covered by the user's hand.
Webb also noted that neither the regulatory tests performed by the FCC during its approval process, nor the antenna efficiency tests performed by the carrier (AT&T) during its own device requirements testing take into account how a user's hand might play into the antenna design and the test results.
The bottom-mounted antenna design "evolved to meet [FCC] requirements," Webb explained. "And efficient transmission and reception while being held by a human hand are simply not design requirements!"
Webb points out that Bluetooth headsets also suffer from attenuation when the phone is positioned in such a way that the user's body absorbs too much of the signal. He assumed that the iPhone 4 design, which "moved the antenna action from the back of the phone to the sides," will likely only improve things when the phone is "suspended magically in air," but may actually make things worse when the phone is placed in the user's pocket.
At the same time, Webb says he voted with his dollars to buy the new iPhone 4 anyway, adding, "sometimes an antenna that's not great, but good enough, is good enough."
06-26-2010, 09:25 AM #523
I tried holding the naughty place with my hands when i first got the phone downtown in Austin. I just tried the test at my home which is 20 miles away from where i originally tested it and the bars intially went down but left 2 of them and then all of a sudden all of the bars came back to where i had full signal strength even with my death grip around my phone. I guess I am considering myself lucky to have not a terrible issue with this where i live and none of the other issues.
06-26-2010, 09:29 AM #524
Good stuff hopefully update soon!
06-26-2010, 10:33 AM #525
How many time do we have to tell you Steve Jobs? This is not a software issue it's a hardware issue, something needs to be changed physically.
06-26-2010, 10:41 AM #526
I guess when I go to "no service" and attempt to make a call and I get "call failed", all by placing my finger in one spot......
06-26-2010, 10:49 AM #527
GREAT now with the update the signal bars will "read" we have good service when we don't.
06-26-2010, 10:55 AM #528
I cant believe so many people fall right into apples hands. Yes apple makes "descent" phones, but we all knew this one was gonna be the most retarded one straight out of the box (because of all the upgrades and the design). We knew there was no way apple would get it right the first time. Sit back and wait til next June. They will redesign this POS and make a little better Iphone out of it atleast.
06-26-2010, 03:17 PM #529
06-26-2010, 03:20 PM #530
I just called Apple support, they said they're aware of the issue and understand fully. They said a new replacement phone would prob be the same and to give it a week or so and they should address it. I told them at the least give me a free bumper case, if not phone if they are recalled.
06-26-2010, 03:34 PM #531
Last edited by xclusiveiphone; 06-26-2010 at 03:41 PM.
06-26-2010, 04:50 PM #532
very strange but I just tried to replicate the issue and I can't get the bars to drop now. Is at&t turning up the juice to help cover apple's butt on this one?
06-26-2010, 04:57 PM #533
OK I came up with a possible solution...The problem is they tried to integrate too many antennas out side of the iPhone. They need to relocate the bluetooth, wifi, and gps antennas somewhere inside the iPhone so it doesn't conflict with the phone's antenna when you touch it. Not only will this enhance the iPhone's appearance by eliminating all the ugly gaps outside the iPhone but even possibly produce better signal.
Last edited by xclusiveiphone; 06-26-2010 at 05:10 PM.
06-26-2010, 05:10 PM #534
06-26-2010, 05:12 PM #535
06-26-2010, 05:26 PM #536
"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."
I can reproduce the error at *home* 100 out of 100 times.
I can drive 20 minutes to my *office*, and reproduce the error 0 out of 100 times.
There is a error in the baseband code for specific 3g carriers (or towers more specifically). It's not 100% a hardware issue, nor did apple confirm this was the case. I, nor apple claimed that there couldn't also be a hardware issue. That's yet to be seen.
The inside loop is saying Monday they will put out a software update which should address the baseband code helping fix the issue. I think Monday would be really fast, however, I'd think in the next week or so they should have something out.
Stating absolutes like "It's 100% a hardware issue" "Steve Jobs is an idiot." show your own ignorance. You know little if anything about the actual inner workings/design of the phone except 1 illustration that they posted showing the 3 segments of the antenna during the keynote.
100 million dollars in development would put my money Steve Jobs knows exactly what the issue is and they are working on correcting the problem.
So to answer your question. I'm implying you're ignorant, and uninformed. Do some research before you start making absolute claims, and act like you know everything. I don't know what the issue is, nor do I claim to. So I'll refrain from name calling, and throwing 100 Mil worth of design into the wind in 24 hours.
Last edited by Pchild; 06-26-2010 at 05:35 PM.
06-26-2010, 05:58 PM #537
Apple has responded with a statement:
"Gripping any mobile phone will result in some attenuation of its antenna performance, with certain places being worse than others depending on the placement of the antennas. This is a fact of life for every wireless phone. If you ever experience this on your iPhone 4, avoid gripping it in the lower left corner in a way that covers both sides of the black strip in the metal band, or simply use one of many available cases."
They implied that a case would fix this problem, so it's quite clear they already admit it's a hardware issue. So your the one that's ignorant and not facing facts. Probably another fanboy defending his superior iPhone.
Proof: Apple admits iPhone 4 antenna issues - USATODAY.com
Last edited by xclusiveiphone; 06-26-2010 at 06:15 PM.
06-26-2010, 06:01 PM #538
Here are results of tests I've done with my i4. All tests were performed in my house where my 3gs has no issues. Speedtest.net app used, 3g on, wifi off
Summary averages: dl/ul in Mbps average of 6 tests:
iPhone on table top: 3.3/0.5
iPhone in right hand: 2.8/1.0
iPhone in left hand: 0.0/0.0 (data link completely dead)
iPhone in left hand in plastic tray: 2.1/0.9
Last edited by zoyd; 06-27-2010 at 08:33 AM.
06-26-2010, 06:07 PM #539
I have to agree. Today I am able to reproduce this at home and when I was out I could not produce this at all.
06-26-2010, 07:35 PM #540