Every few minutes(like 5) while in use the phone just shuts off suddenly and then reboots. I tried restoring in iTunes and it didn't fix it. I can't even get the thing to finish syncing without it turning off in the middle. What should I do? Oh and I've had the phone for 27 days, it's not jailbroken, and this just started happening tonight as far as I can tell. Edit: Nevermind about the in use thing, it does it regardless of use or not.