[kcheleb]

Hello everyone, I'm new here and I apologize if this is not the proper place to post this .. I would like some help please

I have an 8GB 3GS iPhone with iOS 5.0.1 installed,
Lately I’ve been experiencing a problem with the iPhone that I noticed started when I installed iOS 5.0.
I thought updating to 5.0.1 would fix it but it hasn’t and the problem is still there

Basically my problem is that the iPhone keeps restarting/rebooting itself every 5 or so minutes. What’s funny about this is that this ONLY happens when I’m in this one area…my classroom in the basement at school
Whenever I am anywhere else the phone does not do this. However, as soon as I go to that classroom my phone will start restarting/rebooting itself every 5 minutes. One thing about that classroom is that I get absolutely no signal there, or if I am lucky then I may get 1 bar for a few seconds before it disappears.
This problem is really driving me crazy and I’m not sure what to do. I tried restoring the iPhone but that did not fix the problem, and like I said I updated to 5.0.1 and hoped that it would fix the problem but it hasn’t.
When I was on iOS 4 this problem never occurred
NOTE: my iPhone is not jailbroken, I have not jailbroken it with iOS 5 or 5.0.1

Anyone have any ideas or suggestions? Anyone else experiencing this problem?

[kcheleb]

Just an update on the situation. When I went to class today I put the phone on airplane mode before going in and the phone still kept restarting during class

When I left class I turned airplane mode off and the phone restarted maybe 1 or 2 times after that and then it was fine, stopped restarting ...

Also, my phone isn't under warranty so I wouldn't be able to take it to Apple

[kcheleb]

Just another update on this situation actually, when I put my phone on airplane mode .. the phone starts restarting itself as well, and this happens no matter where I am. If I put my phone on airplane mode at home for instance it will begin restart itself just like it does in that classroom where I have no signal. This problem definitely lies with the signal .. it seems like 0 signal causes the phone to restart every 5 minutes ..

[Cold Warrior]

When you restored, did you restore from backup or set up as a new iPhone?

Have you tried resetting network settings from the iPhone?

[kcheleb]

Originally Posted by Cold Warrior 

When you restored, did you restore from backup or set up as a new iPhone?

Have you tried resetting network settings from the iPhone?

How do you do that? and I think I did both before

My iPhone is no longer under warranty .. I am not sure what to do

When I put my iPhone into airplane mode it starts restarting itself as well

Doesn't it cost $30 just to speak to someone over the phone for Apple support?

[Gankdawg]

I know that when a computer reboots itself randomly, it's often a bad power supply or overheating. Perhaps a temp sensor is faulty. I don't know how you'd diagnose that or even what the fix is. Might try replacing the battery though.

[polendo]

Sounds like a bug to me. Maybe when you have no signal the iOS 5 tries to switch antennas and or conserve battery power and restarts itself in order to start looking for a signal.

If I were you I would record the happening and speak to an Apple guy and show them what happens.