My phone screen keeps fading out. When I first turn it on, the apple logo appears and then it fades away after a few seconds. The screen then goes black, but the phone is still on (I can receive text messages and calls, but I cannot see anything). I can connect the phone to iTunes, but I need to get permission from the phone to access any of my data, so I cannot back it up or resort it. I've also tried reseting it, but that hasn't worked either. I did not drop it or get it wet. It was in my pocket and then I took it out and this was happening. I had to get a new phone screen recently, but I've only had it for about 2-3 weeks. I think the seller just gave me a bad screen, but I'm not sure. Someone please help!!