I have a stock iPhone i got about a month right now and I have a few problems. My iPhone keeps freezing so and the accelerometer is not working. So I called my service provider and they told me to restore it. It didn't work for 5 times until I restored it through DFU mode. Now after yesterday's hassle, my lock sounds have disappeared and my phone echoes on the other line says my friends. I tried to restore it again but it WONT RESTORE!!! HELP!