I've had an iPhone 5 for almost a year now, and since updating to iOS 7, this is the first time this has happened to me. My iPhone will sometimes randomly "restart", acting as if I turned it off and on again. I'll be listening to music, and suddenly the white screen with with Apple logo pops up. It's only happened since 7.0.3 though. Didn't have the problem before. Pretty annoying. Anyone else experiencing this / knows how to fix it?