So I recently used Ziphone to update my unlocked 1.0.2 Iphone and even when I had it at 1.0.2, after about an hour or so of use, the battery would die to 50%. Then a few minutes later it would just turn off by itself. Even when I it on, it keeps turning off after getting to the home screen. The little circle wheel starts spinning and it shuts off. I thought updating it to 1.1.3 would help, but no. I restored it even without the back up and still the same problem. Any suggestions?