3304 Views 5 Replies Latest reply: Apr 20, 2008 9:02 PM by locondcoco
It sounds like some application is running in the background that is using most of the CPU cycles. If you have hacked (jailbroken) the phone or otherwise installed applications on the phone this is the first place to look.
Assuming the phone was purchased directly from Apple or AT&T and you have not installed any software on it try restarting it. Hold the HOME and SLEEP buttons for about 8 seconds, until the Apple logo appears (Ignore "slide to turn off" and keep holding). This should fix it. If the problem recurs let us know and we will look for other issues.
If a Reset does not resolve these problems, try doing a Restore with iTunes.
Sync your iPhone immediately before doing the Restore - to update your iPhone's backup if needed.
A Restore will completely erase your iPhone, and then reinstall the current firmware version, which is 1.1.4.
After the current firmware version is re-installed, you will be provided an option to restore your iPhone from the backup - which should be the default.
This must be followed by another sync.
If this doesn't resolve it, give AppleCare a call (800) 694-7466, or make an appointment at an Apple Store if there is one nearby.
Okay, so I followed your instructions for restoring it, and it seemed to fix the problem. However, when I input my mail settings back in, everything seemed to be working fine again until I tried turning it on again five minutes later: when I pressed the home button, nothing happened, and then after about 2 minutes it showed the slide to unlock screen, but it was frozen.