I've had this phone for 6 months and have loved it with no problems. But last night my phone turned off and started vibrating and I couldn't get it back on. After about an hOur or so it turned back on but now every two minutes or so it turns off and starts vibratIng again. Anyone have a solution to this problem? It's very very annoying. I went to the AT&T store ad was told if the problem persists that I could get a new since its still under warranty. I would like to know a solution to this problem just in case it happens again with my replacement galaxy s2 skyrocket.