How do you fix the iPhone after restarting?
It depends. If you UNLOCK it and put a new SIM in: No. If you just JAILBREAK it: Yes, yes you do.
What to do when Iphone 4 keeps restarting?
There is an app in the Apple Store
Why do my computer keep restarting after every five minutes?
you probably have a virus. go to http://housecall.trendmicro.com/
Can iPhone Sim Cards be swapped into another iPhone If so what is the process after you put the Sim in the other iPhone?
Yes it can be swapped. I actually swapped my razr's sim card to my iphone. Nothing happened. It works perfectly.
I tried to JailBreak my Iphone 4 and now after it didn't work i decided to restore my phone ITunes is telling me my back up from my Iphone is corrupt or not compatible with my Iphone any advice?
It is now called the 4S, and yes, the 4 is now $99 for the 8gb model.