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Where in the UK do you live and on what network are you? Have people with O2 had any problems so far? I was able to see the same problem happening to all iPhone 4's in store (Regent Street Apple Store, London) that were running on the Orange network, but O2 and 3 seemed to be fine.. no signal drops when holding the phone in store with these networks.

Yep - I'm on Tesco mobile which uses the o2 network and I have the signal drop when holding it issue.
 
Ooh, that's interesting. Whilst I do get a small drop on my 3GS even on 3.1.3, it's not as severe as that (or as what I'm getting on the iP4) and is probably just down to the presence of the hand in general. Also I heard something about how the bezel on the older iPhones also acts as an antenna to some degree?

There's hope yet. Thanks for the link.

PHEWW!!!!! That means its a software bug. A lot LOT better than a Hardware bug. And yeah I like Apple!
 
Ok, so there is a problem with signal strength when the two antennas are bridged directly by your hand.

Now I have a quick question. How many iPhone users actually use their iPhone on a daily basis without some sort of rubber or plastic case covering the majority of the phone?

I ALWAYS have my phone in a case, and its been that way since the first iphone was released. If this is the only problem, I could care less.
 
very unfortunate...

Wow and to think all the fuss about IPhone I new I made the right choice with my HTC EVO4G. Must have case inorder to have signal strength inorder to make a call......YOU CAN'T BE SERIOUS AT&T strikes again. Can't help but laugh yellowish on screen the so called best RETNA display how great is the iPhone 4 now?? HTC EVO POWER#1 in the smartphone industry.
 
That is interesting. I would have to guess this very well could be a software issue.

That website isn't stating anything new and just rephrasing the already existing speculation from this forum.

I do think it has something to do with the iOS 4.0 software, but I think the iPhone 4's exposed external antennas make the problem worse.

What I can't explain to myself is why, if the main issue is iOS 4.0, some people are NOT experiencing these issues on iPhone 3G, iPhone 3Gs and iPhone 4. Does anyone have an explanation for this? A mixture of signal strength and the software problem maybe? (I tested my iPhone 3G on 3.1.2 and 4.0 and have no major issues although O2 drops one bar from 5 to 4 when being held for about half a minute, maybe the software issue is triggered more / less / not at all depending on signal strength and therefore depending on location and carrier.) The software couldn't have fixed itself on some phones :p
 
I have a hard time believing this is a software issue, but I guess we'll see.

Why? The science and design of antennas is very well understood and whatever you might think, the iPhone was designed & tested by engineers who know what they're doing.

Software issues however are extremely common, almost to the point of inevitability, and a perfectly plausible explanation has already been offered in this forum though overlooked in favour of more wailing and gnashing of teeth. It may not be the correct explanation, but it's indicative that software could indeed be the likely issue.
 
This was emailed to me, I like it.

May I posit a theory of what's going on? I have no inside information that this is, in fact, what is happening, but it seems to me to be the most plausible theory.*

Let me state first that it is a complete impossibility that Apple's engineers "didn't realize" there was a problem with the design. These aren't blind morons throwing together a bunch of parts and saying, "Let's see if this works, guys!" These are some of the best engineers and industrial designers on the planet. First, every design they create is based ON THEORY. They don't just build something and then test it to see if it works. But more importantly, every design coming out of their lab goes through iteration after iteration after iteration after iteration after iteration, each prototype being subjected to rigorous testing IN THE LAB, before even being brought into the field for testing. You can even see this for yourself with the leaked prototype iPhone 4's (which were all extremely late-stage prototypes), which bore the markings "EVT" and "DVT," standing for "Engineering Verification Test" and "Design Verification Test," respectively. Believe me when I say that design-wise, nothing this glaring "slips through" testing*

That being said, it IS conceivable that Apple made a conscious decision to prioritize form of over function as I have seen them do a few times in the past (albeit for much smaller considerations than the one at issue). However, I sincerely doubt that that is the case, since much of the known evidence contradicts this blind assumption. Everyone is focusing on this being an inherent issue in the design of the phone, but what I find to be a much more likely explanation is that it is not so much an issue with design as it is with manufacturing. The fact that there have been at least several documented cases of iPhone 4's that don't seem to exhibit the problem suggests this theory to be true, especially since the number of apparently positive cases will always be substantially inflated, given that it's the users WITH the problem who are much more likely to report back than those without it.*

Now, it is conceivable that the differences in results among users are due to other variables like location and that the problem would surface among "unaffected" users if those users were to test it in a different environment. But I highly doubt that Apple, or any company for that matter, would deliberately release a product that it knew to suffer a defect in design so severe as to cripple the central functionality of the device--especially since they could, it seems from the preliminary evidence, have maintained the aesthetic appeal of the device and still avoided the issue by more fully insulating the two antennae from each other. Much more likely, in my opinion, is the following:*

Apple realized very early on in the manufacturing process that they had a problem (back when they first started ramping up production to significant quantities in early to mid-May). They immediately rectified the issue from there on out, but they then faced a choice: They could either take the iPhones they had already manufactured off the supply line, eat the cost, and, most crucially, delay the launch and suffer a PR disaster; or they could let the defective models come to market.*

Apple's being Apple, they would have been extraordinarily reluctant ever to publicly acknowledge there was an issue, so instead, they thought the problem through and came up with a way they could maintain the launch date and mitigate the cost, in profit loss and PR, that they would have to eat due to recalling the defective devices: Quickly rush to market a set of colorful Apple-endorsed iPhone cases that JUST cover the conductive surfaces of the phone. The backstory for the launching of the cases gains some credulity because Apple happened to have already launched a case for the iPad, so Steve could casually mention in the keynote that "We did it for the iPad. We thought we'd try our hand at it for the iPhone." Case manufacturing ramp-up time is likely MUCH faster than the time it takes to ramp up iPhone production, so they could quickly rush the cases to market. Give it a clever name, include it in the keynote, and a substantial number of customers are likely to buy the bumper and never notice that their bought-at-launch iPhones are defective.*

For those customers who do experience a problem, replace their phone no questions asked. But those customers who return it are likely to be a small subset of the whole launch day purchaser population, saving Apple substantial amounts of money and, more importantly, PR problems. Never publicly admit there's a problem, maintain the launch date, and preserve Apple's "untarnished" image. After a month or so, the iPhones subjected to the revised manufacturing process would hit the market, people would start experiencing the problem in much lower quantities, and the problem would quickly fizzle away to nothing, only to be vaguely remembered in the annals of Apple product launch history.*

I actually think it is a rather interesting and creative--if not completely responsible--way of handling the issue. And it seems to me to be the most likely theory of what's going on. I'll reserve further judgment until we see how this pans out. Until then, let us all watch with bated breath.*
 
Glad to hear this might be a software issue.

Although it is strange I am able to reproduce this issue while at work, but when at home I have full 3G service and NOT able to do so.
 
May I posit a theory of what's going on? I have no inside information that this is, in fact, what is happening, but it seems to me to be the most plausible theory.*

Let me state first that it is a complete impossibility that Apple's engineers "didn't realize" there was a problem with the design. These aren't blind morons throwing together a bunch of parts and saying, "Let's see if this works, guys!" These are some of the best engineers and industrial designers on the planet. First, every design they create is based ON THEORY. They don't just build something and then test it to see if it works. But more importantly, every design coming out of their lab goes through iteration after iteration after iteration after iteration after iteration, each prototype being subjected to rigorous testing IN THE LAB, before even being brought into the field for testing. You can even see this for yourself with the leaked prototype iPhone 4's (which were all extremely late-stage prototypes), which bore the markings "EVT" and "DVT," standing for "Engineering Verification Test" and "Design Verification Test," respectively. Believe me when I say that design-wise, nothing this glaring "slips through" testing*

That being said, it IS conceivable that Apple made a conscious decision to prioritize form of over function as I have seen them do a few times in the past (albeit for much smaller considerations than the one at issue). However, I sincerely doubt that that is the case, since much of the known evidence contradicts this blind assumption. Everyone is focusing on this being an inherent issue in the design of the phone, but what I find to be a much more likely explanation is that it is not so much an issue with design as it is with manufacturing. The fact that there have been at least several documented cases of iPhone 4's that don't seem to exhibit the problem suggests this theory to be true, especially since the number of apparently positive cases will always be substantially inflated, given that it's the users WITH the problem who are much more likely to report back than those without it.*

Now, it is conceivable that the differences in results among users are due to other variables like location and that the problem would surface among "unaffected" users if those users were to test it in a different environment. But I highly doubt that Apple, or any company for that matter, would deliberately release a product that it knew to suffer a defect in design so severe as to cripple the central functionality of the device--especially since they could, it seems from the preliminary evidence, have maintained the aesthetic appeal of the device and still avoided the issue by more fully insulating the two antennae from each other. Much more likely, in my opinion, is the following:*

Apple realized very early on in the manufacturing process that they had a problem (back when they first started ramping up production to significant quantities in early to mid-May). They immediately rectified the issue from there on out, but they then faced a choice: They could either take the iPhones they had already manufactured off the supply line, eat the cost, and, most crucially, delay the launch and suffer a PR disaster; or they could let the defective models come to market.*

Apple's being Apple, they would have been extraordinarily reluctant ever to publicly acknowledge there was an issue, so instead, they thought the problem through and came up with a way they could maintain the launch date and mitigate the cost, in profit loss and PR, that they would have to eat due to recalling the defective devices: Quickly rush to market a set of colorful Apple-endorsed iPhone cases that JUST cover the conductive surfaces of the phone. The backstory for the launching of the cases gains some credulity because Apple happened to have already launched a case for the iPad, so Steve could casually mention in the keynote that "We did it for the iPad. We thought we'd try our hand at it for the iPhone." Case manufacturing ramp-up time is likely MUCH faster than the time it takes to ramp up iPhone production, so they could quickly rush the cases to market. Give it a clever name, include it in the keynote, and a substantial number of customers are likely to buy the bumper and never notice that their bought-at-launch iPhones are defective.*

For those customers who do experience a problem, replace their phone no questions asked. But those customers who return it are likely to be a small subset of the whole launch day purchaser population, saving Apple substantial amounts of money and, more importantly, PR problems. Never publicly admit there's a problem, maintain the launch date, and preserve Apple's "untarnished" image. After a month or so, the iPhones subjected to the revised manufacturing process would hit the market, people would start experiencing the problem in much lower quantities, and the problem would quickly fizzle away to nothing, only to be vaguely remembered in the annals of Apple product launch history.*

I actually think it is a rather interesting and creative--if not completely responsible--way of handling the issue. And it seems to me to be the most likely theory of what's going on. I'll reserve further judgment until we see how this pans out. Until then, let us all watch with bated breath.*

is there a TLDNR version :cool:
 

I said this earlier, but my iPhone 3GS does exactly the same thing at home. Set it down I have 5 bars, hold it in my hand and it drops down to 1 bar or no service. I have to have it in the palm of my hand, and yes in my left hand so I am guessing the antenna is in the bottom left. I found a 3.1 firmware online and I am tempted to downgrade to see if that makes a difference but I am afraid of bricking the phone. Does anyone have a 3G or 3GS they haven't upgraded yet they would be willing to test with, and then test again after they upgrade to 4.0?
 
Wow and to think all the fuss about IPhone I new I made the right choice with my HTC EVO4G. Must have case inorder to have signal strength inorder to make a call......YOU CAN'T BE SERIOUS AT&T strikes again. Can't help but laugh yellowish on screen the so called best RETNA display how great is the iPhone 4 now?? HTC EVO POWER#1 in the smartphone industry.

Ignore!
Basher.
Troll.
 
What I can't explain to myself is why, if the main issue is iOS 4.0, some people are NOT experiencing these issues on iPhone 3G, iPhone 3Gs and iPhone 4. Does anyone have an explanation for this? A mixture of signal strength and the software problem maybe? (I tested my iPhone 3G on 3.1.2 and 4.0 and have no major issues although O2 drops one bar from 5 to 4 when being held for about half a minute, maybe the software issue is triggered more / less / not at all depending on signal strength and therefore depending on location and carrier.) The software couldn't have fixed itself on some phones :p

Possibly because of the huge variance in the variables at play from the dielectric properties of different peoples skin to the cell towers in play at any given location.
 
It's Evo Time

Very odd....Video chat over WIFI?? No at&t 3g network service for facetime how senseless. Now this screen/signal can't hold the phone in your hand without a case... COME ON STOP PLAYING. Thank god for HTC EVO 4g on the best network SPRINT...whatmore can I say
 
Well both of my phones aren't affected all what so ever. My girlfriend and I have done some testings on ours and can't seem to produce the problem no matter how much and where we put our hands and fingers around the phone. Hopefully this problem is some how isolated and can be fixed through software updates. In the mean time, I couldn't be any happier with both my phones.:)
 
Very odd....Video chat over WIFI?? No at&t 3g network service for facetime how senseless. Now this screen/signal can't hold the phone in your hand without a case... COME ON STOP PLAYING. Thank god for HTC EVO 4g on the best network SPRINT...whatmore can I say

You ought to stop trolling and get your charger. It's almost 20 minutes since you last charged your capacitative-resistive-screen phone.
 
For some, this might be a biologic issue. Too much iron in the blood could provide enough interference to cause a drop in signal strength? Maybe this is a job for the "MythBusters!!"

Heavy meat-eating human carnivores might be experiencing the most problems. Or maybe that vegan-style spinach and oats salad?
Too much Curry!!!???

"What did you eat today.... Hmmmm?":cool:
 
Well both of my phones aren't affected all what so ever. My girlfriend and I have done some testings on ours and can't seem to produce the problem no matter how much and where we put our hands and fingers around the phone. Hopefully this problem is some how isolated and can be fixed through software updates. In the mean time, I couldn't be any happier with both my phones.:)

Noo noooo... you have to put your hands on the phone! :D
 
@ mnemonix: You're referring to the firmware hypothesis?

The fact that the firmware is incorrectly responding to the change in the antennas properties when touched in some situations and mismanaging or dropping the connection unnecessarily. This might also be affected by signal strength, availability or any of the other variables it uses to manage the connection, hence the different experiences that are being reported.
 
May I posit a theory of what's going on? I have no inside information that this is, in fact, what is happening, but it seems to me to be the most plausible theory.*

snip, snip, SNIP!

Managing the PR disaster of a delayed release by knowingly allowing another PR disaster of malfunctioning phones? No, not in the least bit plausible. Also, try and express your ideas more succinctly, however absurd they might be.
 
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