So my auto lock stopped working on my phone. This started happening almost 2 months ago now, I first noticed it when I would listen to music, weather it would be on iHeart radio, Pandora, or the music app built into the phone. But then it has progressed to almost all the time, I don't have to be listening to music for this to happen now. I went to an Apple store, and they replaced my phone, for the first like week or so it was fine bu then it started happening again. When I set up the new phone I did not back it up from icloud like recommended. Anyone know what I can do or why it would do this?