Automatically going to sleep mode? or really shutting down on a way that you have to push the power button to reboot the iPhone and wait for about 40s for it to load completely?
Automatically going to sleep mode? or really shutting down on a way that you have to push the power button to reboot the iPhone and wait for about 40s for it to load completely?
Factory restore it and set it as new, I mean do not restore your backup file after factory restored it. You might be having corrupted files within the iOS.