My Unrooted Droid 4 is stuck in a reboot loop. I took it to Verizon and they couldn`t figure out what was wrong with it so i had to file on insurance because my screen was cracked. Before the new phone could arrive, my droid 4 stopped rebooting itself and all was fine, so i rejected the shipment of the new phone. A day later it went back into the loop of rebooting itself and it says no service. The phone is operable for about 2 minutes before it reboots itself. if anyone can help it would be greatly appreciated.