I've seen other posts about this on various sites but none of the solutions thus far have helped me. Starting yesterday, my white AT&T iPhone 4 has been becoming very hot (almost to the point of burning my skin) while charging or while in use and the battery was depleted in about 5 hours (normally lasts me more than the whole day). I first turned off the "Ping", deleted my e-mail account, reset the network settings, and still no change. Then, I did a complete restore to a back-up. I also turned off basically everything (Push notifications, location services, wi-fi, Fetch new data, etc) and closed practically every app including the standard ones like e-mail and You-Tube. Does anyone have any suggestions for what I can do to fix this problem? The phone isn't very old at all, because they just started making these. The trouble is I didn't buy it, I actually found it at a bus stop in Vegas and the person never called the phone to get it returned so after a week, I changed it over to my account, so I don't think I'd be able to get any help at the Apple store about this problem.