Re: Phone Keeps Rebooting
Welcome to Android Central! Did you install any apps recently? It's possible a new app could be causing problems, so you could try booting into Safe Mode by following these instructions: [Only registered and activated users can see links. Click Here To Register...] If you don't have any more reboots, try uninstalling the last few apps you had installed, then reboot into normal mode. From what I have read, in order to get out of Safe Mode, you might have to power down, pull the battery for a minute, then put the battery back and restart.
The other thing to try is to do a cache partition wipe, which erases temporary data from the system cache partition. You won't lose any important data, but sometimes temporary data hangs around that can mess things up a bit. Instructions are in this post: [Only registered and activated users can see links. Click Here To Register...]