iPhone 5c gives the wrong time.
I've had this phone for 10 months. Everything was fine until now. I've reset my location, turned automatic time on & off, reset the time manually, reset my settings. Nothing works. The date is correct, but whenever I leave the phone or turn it off, the time becomes random. My carrier is T-Mobile; my software is up-to-date. What do I do?
iPhone 5c, iOS 7.1.2