Every now and again my photon will stop receiving calls or text messages. I've called it myself and it rings normally on the other end but the photon just sit there as if it's to happening and everything else works the phone doesn't actually freeze up or anything. The only way to get it to start working again is to pull the battery. Has anyone else had this problem? Would a factory reset help? The only programs I have installed are angry birds, Facebook, battery circle, google music, solitaire, and weatherbug. I'm not rooted.