If I make a phone call, the start up sound stops.Then it won't go on for no set amount of time (seems like sometimes 5 minutes, sometimes 20), then it starts sounding that awful repetition of Droid over and over. Razr M. I've had it almost 2 years with much loaded on it. Motorola and Verizon tech support just said do a factory reset! Suggestions? Could I have this sound due to too much memory filled?