I have a Galaxy S 2 D710 Sometimes the phone stops receiving calls. There seems to be no rhyme or reason. When I'm at home and I call my cell phone from my land line, the Galaxy never rings. It goes directly to voice mail. However, if I shut down the phone and resart it, it begins receiving calls again immediately....until it randomly stops again. It happens once or twice per day and almost every morning when I first try to use the phone. Anyone have any suggestions?