IPhone stuck in reboot! Help!

My iPhone started displaying an 'incompatible device' error (even when NOTHING was plugged in). I tried turning it off and back on again, but it won't boot up again. It just keeps rebooting at the Apple logo.
Now nothing recognizes the phone - not iTunes, not iPhoto, or any of my computers. Do I have a brick on my hands? (I have tried every reset/restore trick).
Thanks for any help.

Try holding the top button to shut off the phone.
If that does not work, hold down the Home button while it's looping and when the Apple comes up, plug the phone into the USB cable. This will try to force a restore of the phone.
If that does not work, take it to your nearest Apple Store or contact support.

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IPhone stuck in reboot loop - too many apps installed?

Hi guys!
Starting some months ago, I've had nothing but problems with my iPhone. However, I've been dealing with most of these or even solved them.
But now I'm stuck on a reboot loop for a few days and don't know what to do.
When did it start? I think it was in May when I first got panic.plist, ResetCounter and SpringBoard-CrashLogs under "Diagnostics and Usage". Following this, everytime I rebooted my phone or the battery was empty, it could take some more minutes than normal for my iPhone to boot. This loading time increased and increased, in October it once took more than two days for my iPhone to reboot. I now have really thousands of those ErrorLogs. The Apple support on the phone couldn't help me either. Additionally, the phone performed some cruel changes I can't explain: Once the language was changed, once the photo gallery had to be restored (the iPhone did that on its own).
However, sometime in November the iPhone crashed, and I was already thinking that it would now last a few days until I could use it again. But somehow it was done within 15 minutes. Without any error or reboot loop. The last two months I haven't had any problems with this until the battery was empty three days ago.
Since then, I have had the iPhone plugged in so the battery doesn't get empty and it's stuck on the bright Apple logo. After about 210 seconds the logo gets dark, then the screen is completely black and it's starting the same procedure again. Sometimes I get the vibration, sometimes the loading circle (white wheel of death!), but everytime it just starts over again.
I am pretty sure this problem appears because I have more than 1300 apps installed (yes, this is a very huge number, but I remember Steve Jobs saying that, with the folders in iOS 4, it would be possible to have a few thousand apps installed), 4000+ photos, and so on. I am pretty sure it's not a hardware, but a software problem. In detail, it's about the SpringBoard. The iPhone 4S only has 512MB RAM, so it's hard for it to load 1300+ app icons into its memory (which it has to because the SpringBoard has to run without any lags). Only in some cases it's able to boot that up, but I have absolutely no idea which cases these are and why it has run well for the last two months, but beginning with the new year stopped to work.
Furthermore, the panic.plist entries all say that the problem is a watchdog timeout. Apple's iOS seems to allow the devices only to take up to two minutes (always around 120 seconds in the CrashLogs) to boot up, then probably another 120 seconds to launch the SpringBoard process (which explains the watchdog timeouts in the SpringBoard-CrashLogs).
I will not restore the iPhone because I unfortunately haven't backed up for a long time and there have been many data changes since the last backup.
So altogether, I tried to collect all the information I know here, but that's really not enough. Apple unlikely wants to help me, the phone support was really nice, but even asked his superior, who couldn't help either.
My questions to you folks now are: Do you have any more information regarding panic.plist's, watchdog timeouts or reboot loops?
What would your advice be? Any chance to get onto my data and back it up? Or is waiting the best solution?
Would it be better to try several hard resets, or let the battery run empty and start the whole process again, or just let the phone plugged in so it tries to reboot on and on until it's hopefully successful sometime?
And: Would it maybe increase the loading time if I would take the SIM card out of the iPhone, so the chance to have an successful try would be higher?
Note: I am still using iOS 5.1.1 because I am completely sure that I'd have to buy an iPhone 5 to run 1300+ apps on iOS 6.

Okay, some more information about this.
Apparently there is a 'watchdog' that listens whether the iPhone's software responds or not. If it doesn't, it forces a restart, and also creates a panic.plist entry (under Diagnostics). Unfortunately the responding time is only 120 seconds. The problem I have now is the so called 'Application Map'. To ensure a smooth browsing through the different screen filled with apps, this map is regenerated everytime the user installs a new app or deletes one. Because I have more than 1300 apps installed, generating this Application Map usually takes more than two minutes. I can only hope that sometime in the next days my iPhone will be able to do this in less than 120 seconds (like it has done that several times before).
I still can't explain why everything had been working great during the last two months. I have probably installed some new apps, but also deleted other ones, so the number of total apps didn't really increase heavily.
However, I've read about some possible solutions to this problem (without restoring - which would solve the problem only temporarily anyway):
Hard-resetting the iPhone until the screen is completely black, then wait a few minutes, then turn the device on. It's possible that this has to be repeated several times, but for the user who posted this it resolved the issue.
For all the (in this case lucky) guys with a jailbreak: SSH into the iPhone, then temporarily move the watchdog located under /System/Library/SystemConfiguration/mobilewatchdog.bundle to a different folder, the iPhone will boot up after a few minutes. Then just move the watchdog back. It's a shame that apparently jailbreak users can resolve this issue, while normal users can't.
I also want to note that this problem has been appearing since iOS 2, which came out more than four years ago. It would be really no big deal for Apple developers to change the 120 seconds to e.g. 300 or even more. I've found hundreds of threads, not only here, where users complain about exactly the same issue. I don't have any hope that an Apple employee will ever read this, but if so, please keep that in mind. I don't understand why Apple has done nothing to solve this issue.
However, if you have any more ideas, please reply here. If there's anyone around here who has managed to successfully install more than 1300 apps on his iPhone (or iPod touch), please post that.

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Hey there I have found the solution what you do it pop the sim card out. Plug your phone while off into itunes, then load itunes, now it wont pop up on the screen but make sure itunes is fully up and ready to go. Then do a force reset on your phone by holding the home button and the lock button, hold these too down till the phone turns of then reboots continue holding them down through the apple logo "hold for maybe 15 sec after apple logo" then release. Itunes should now find it and what you will want to do is a full restoration and it will ask you if you would like too as well. Once the software is back on the phone you will need to put the sim card back and then you should be back in business! Hope it works for you!

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No matter how many times I try to reset the phone by pressing the power button and home key, it just goes black for a few moments and then back to the Apple logo reboot screen - and it doesn't advance from there.
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Have you tried holding both the buttons down for 25 seconds? You should see a yellow exclamation point sign after that, then launch iTunes and do a Restore.

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Restore iPhone with iTunes. It may need to be restored in DFU Mode. To get DFU Mode, open iTunes on computer, connect iPhone to computer, hold both home and power buttons for exactly 10 seconds, release power button, keep holding home button until iTunes recognizes iPhone in Recovery Mode, usually 20 seconds time. If the screen is black, blank this is DFU Mode. Restore the Firmware. If there are any Error Messages write them down so you can look up the cause and solution.

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mirandacampos wrote:
I'm trying to restore my iphone ...it won't let me do it ... it's stuck on recovery mode
See Here > http://support.apple.com/kb/HT1808
You may need to try this More than Once... Be sure to Follow ALL the Steps...
Take your time... Pay particular attention to Steps 3 and 4.

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- See if this program will place it in recovery mode since that erases the iPod and bypasses the passocode.
RecBoot: Easy Way to Put iPhone into Recovery Mode
- Next try letting the battery fully drain. The try again.

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Hi,
Can someone help me fix my iPhone 3GS. I'm not sure what the problem is. It blacked out, and not responding (frozen).
So the first thing I did was to plugged it to AC outlet and charged it, but It keeps restarting (Boot up to apple logo). So the second thing is pressed power + home for 10 seconds (reboot and got stock in i think is recovery mode)
Third, using a PC, trying to restore thru iTunes but same thing keeps restarting even iTunes can detect it.
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Thanks for the advice. Yeah been trying that since 7:30 but nothing happens. It's stuck in reboot / reset mode until battery runs out then I plug it in (on charge by plug) and it was ok until I unplugged it and it lost all my numbers and then went back in that mode. Tried plugging it in again when the battery ran out and it stayed in reboot / reset mode the same as what it's been like. And it's now 19:50 here now.

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Hi awison,
If your iPhone is not recognized by iTunes on your Windows computer you may want to use the steps in this article to troubleshoot -
iOS: Device not recognized in iTunes for Windows
http://support.apple.com/kb/TS1538
This may also resolve your recovery mode issue. If it does not, use the steps in this article to resolve it -
Use iTunes to restore your iOS device to factory settings
http://support.apple.com/kb/HT1414
Thanks for using Apple Support Communities.
Best,
Brett L

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Hi everyone,
I have a problem with my iPhone 3GS bought 2 years ago in France. (Now i am located in Morocco)
After i updated to 4.1 iphone started to reboot itself periodically for no apparent reason every 5 minutes.
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What should i do?
Thanks in advance!

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If restoring the iPhone as a new device (not using a backup) doesn't fix the problem, then you either have a problem caused by whatever software you used to jailbrake the iPhone, in which case we cannot help you with that problem here, or the iPhone has a hardware problem in which case you'll have to ship it back to a friend or relative in the US to get it serviced.
Regards.

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I think there's quite a few iphone 4s users with the same problem!
I called Apple they said it's a hardware problem, but it has worked for nearly two years; they say go to the Apple store and they can provide a replacement phone for approx. £150!
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IPhone stuck in reboot! Help!

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