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My home button started acting up after the 4.1 upgrade. Sometimes I click on it and it does nothing, but usually a second click responds just fine. Nothing too annoying so far.
 
wow, I've just recently started noticing both of these issues too. My phone will occasionally fail to register a home button click, necessitating a second press. It happens rarely enough that I can't quite decide whether I just pressed the button off-center, whether's there's an actual hardware problem, or whether it's just an issue with iOS 4.1.

Currently I'm leaning toward the third option for two reasons: 1)This thread popping up all of a sudden. 2)Sometimes the phone ignores very firm, good presses that result in a definite clicking sound from the button. I get the impression that the mechanical signal is sent, but the phone simply misses the resulting software interrupt.

Anyway, I'm definitely interested in hearing about other peoples' experiences. I've added specific details below:

When did problem start to occur?: As far as I can tell, only after updating to iOS 4.1
How often does it occur?: Maybe about 2-3% of all clicks.
Single-press interpreted as double-press?: Yes, but very rarely.
Age of phone: Got it on launch day, manufactured between June 13th and June 19th.
 
Yep, count me in on this issue, too.

Would you believe that I came to this forum just now to search this issue, to see if anyone else was experiencing the same thing, and it was the very top thread?!? Crazy...

Just as everyone else described, exactly. Single taps sometimes bring uo the tray at the bottom, other times it does nothing. Double taps sometimes register as a single tap. There's no rhyme or reason, but I, too feel it's a software problem and here's why...

Tapping home button from sleep brings uo the screen every time. Hit the sleep button, try again, works all the time. Also, home screen to search page, back and forth, back and forth, no worries.

It's just every other scenario that I experience the issue. Drving me nuts, too! Talked to a friend, he's having the same issue.

I'm on 4.1, restored from jailbroken 4.0.1 :)

EDIT: although I believe it was also happening on 4.0.1 now that I think about it, but it only started recently which made me think it was a hardware issue at first.
 
happens to me as well every so often. not every time and i can't make it happen all the time. no screen protector. never happened with any of my other iphones.
would like a replacement, but have a skin and its jailbroken so don't want to get one just yet.
 
Happens for me too. I am pretty sure that it started with 4.1 for me. I had no problems at all before upgrading. What I find most worrying is that a single click is sometimes interpreted as a double click, pulling up the task bar. I find that very weird if this is indeed a software issue.

Initially I had the impression that a restart fixed it for a while, but I am not so sure about that anymore.

It has to be said that for me it works mostly as expected. This happens maybe 5-10% of the times I press the home button.

All in all, it likely is a software issue with this many people popping up all of a sudden. I do hope it's not hardware related as I live in a country without Apple stores, meaning a long and frustrating replacement process.

Hope everyone else with this problem will chime in, so that we can get an idea of how widespread this issue is.
 
Happens for me too. I am pretty sure that it started with 4.1 for me. I had no problems at all before upgrading. What I find most worrying is that a single click is sometimes interpreted as a double click, pulling up the task bar. I find that very weird if this is indeed a software issue.
This has happened to me sometimes as well
 
Would be great if you could also indicate if the problem started (or became more frequent) with iOS 4.1. That seems to be the case for me.
 
That happened with my old iPod touch. You need to get a cotton swab and dip it in rubbing alcohol, then brush around the home button (don't have it dripping wet, just damp)
 
Mine too. Happens like once or twice a day only. Got mine on release day; no jailbreak or screen protector. Does it on all versions of iOS 4 I have used.
 
I just noticed this recently as well and its really bugging me, so is it software or hardware, it seems if this many people with the same problem it prolly is software
 
I just noticed this recently as well and its really bugging me, so is it software or hardware, it seems if this many people with the same problem it prolly is software

i brought it back to apple store and got a replacement. its working fine up to now. its running iOS 4.1
 
Hit and miss button

I have a 16gb factory unlocked iPhone 4 on 4.1 never jailbroken and I experience the same issues mentioned in this thread(single click multitasking, double click to home and several tries to activate sleeping phone as well as iPod controls) maybe 3-4 times a day. I have not been alarmed until now reading how many other ppl are experiencing it.

Am I regretting my purchase? Absolutely not.
Do I think less of apple? Absolutely not.
Will request a new iPhone? Maybe. I guess we'll see if it gets progressively worse.
 
I have also been experiencing these issues. No big deal, but would certainly like to know why it's happening. I'm on 4.01 jailbroken so I certainly don't think it's a 4.1 issue. I've actually been testing it recently, and it seems that this happens mostly when I have more than 5 or 6 apps open at the same time. One I close the apps, I can't seem to reproduce the issue. Can anyone confirm this?
 
I have also been experiencing these issues. No big deal, but would certainly like to know why it's happening. I'm on 4.01 jailbroken so I certainly don't think it's a 4.1 issue. I've actually been testing it recently, and it seems that this happens mostly when I have more than 5 or 6 apps open at the same time. One I close the apps, I can't seem to reproduce the issue. Can anyone confirm this?

I can confirm that. It seems to lag on a single/double click while moderately heavy processes are running or have just finished. I also find the single click multitask seems to happen the most after the phone has been idle on an app for over a minute.

However I have experienced both no-action single click and multitask single with nothing running in the background at all. I am not convinced that this is hardware yet. I guess I'll do a full restore and see how it goes.
 
i've had my iPhone 4 for about 3 and a bit months, i never had the problem until just after upgrading to 4.1, sometimes it would be really bad, wouldn't even respond, before 4.1 it was perfectly fine, so i know it was software issue, not hardware, closing some apps in multitasking helped.

Anyway last night it got so bad, i just did a clean restore, it's now working perfectly again. will see if this lasts or not though....
 
i've had my iPhone 4 for about 3 and a bit months, i never had the problem until just after upgrading to 4.1, sometimes it would be really bad, wouldn't even respond, before 4.1 it was perfectly fine, so i know it was software issue, not hardware, closing some apps in multitasking helped.

Anyway last night it got so bad, i just did a clean restore, it's now working perfectly again. will see if this lasts or not though....

That's very interesting.

Although people will come in here and say stuff like "Multitasking doesn't use any CPU cycles!"
 
That's very interesting.

Although people will come in here and say stuff like "Multitasking doesn't use any CPU cycles!"

it's probably an app that is in multitasking that's got some bug that breaks it i suspect, rather than it being multitasking itself, plus that trick only randomly and rarely worked...
 
That's very interesting.

Although people will come in here and say stuff like "Multitasking doesn't use any CPU cycles!"

It doesn't use cpu cycles. Unless it literally is an app that is multi-tasking.

Just because it's in the multi-tasking bar... (by the way it's not a multi-tasking bar, it's a quick switch bar) doesn't mean it's multi-tasking.

There are only a few ways that an app can be multi-tasking.

1) Audio - Pandora and MLB At Bat are examples of this. You can see it's multi-tasking by the Play button in the top right corner of the screen. Same thing the iPod app does.

2) GPS - TomTom, and Navigon are examples of this. You can tell those are multi-tasking by the arrow-like compass icon in the top right corner, same location the play button is in for the previous example.

3) Task Completion - Applications like Flickr could for example be uploading a photo. Pre-4.0 would quit the process if you left. In 4.x you can click home and leave the app. If the app supports it, the upload could continue for up to 10 minutes (or until complete) before the OS kills the app.

4) Voip - Skype is an example. You can see these apps are working in the background because of the red bar at the top of the screen.

You don't see any of those? Then nothing is multi-tasking. The only one you cannot see is Task Completion and it has a time out of 10 minutes, then the OS kills the process.

Anyone who is telling you otherwise isn't understanding the system, thus, don't believe them.
 
It doesn't use cpu cycles. Unless it literally is an app that is multi-tasking.

Just because it's in the multi-tasking bar... (by the way it's not a multi-tasking bar, it's a quick switch bar) doesn't mean it's multi-tasking.

There are only a few ways that an app can be multi-tasking.

1) Audio - Pandora and MLB At Bat are examples of this. You can see it's multi-tasking by the Play button in the top right corner of the screen. Same thing the iPod app does.

2) GPS - TomTom, and Navigon are examples of this. You can tell those are multi-tasking by the arrow-like compass icon in the top right corner, same location the play button is in for the previous example.

3) Task Completion - Applications like Flickr could for example be uploading a photo. Pre-4.0 would quit the process if you left. In 4.x you can click home and leave the app. If the app supports it, the upload could continue for up to 10 minutes (or until complete) before the OS kills the app.

4) Voip - Skype is an example. You can see these apps are working in the background because of the red bar at the top of the screen.

You don't see any of those? Then nothing is multi-tasking. The only one you cannot see is Task Completion and it has a time out of 10 minutes, then the OS kills the process.

Anyone who is telling you otherwise isn't understanding the system, thus, don't believe them.

Multitasking isn't perfect. I believe there are some kinks with it.
 
Yep, same here. Funnily enough I was googling this yesterday but couldnt find any info.

Some times a single click will bring up the multitasking dock, some times a double click wont do anything. Very strange behaviour - I dont think a replacement will sort it. Possibly a software problem - I didnt have problem with 4.0.x
 
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