Well yesterday I was using my iPhone to text my girlfriend, and then I set it down and the phone screen shut of (sleep mode). Then when I got a text, the screen lit up in all white (The phone was set up to show a preview of the text even when it's in sleep mode). The phone itself isn't broken because when I turn it on and do the sliding motion to unlock the phone it makes the unlock noise, but the screen is completely white and it won't show anything. I looked up online on how to fix it and I tried resetting it via iTunes, and that didn't do anything for me. But when I reset it and my phone turned back on, the phone was working for a bit until it went back into sleep mode and then the screen turned completely white again. I don't want to pay for a new phone if I don't have to… Is there anyone who knows how to fix this problem?