I don't know what I don't know! But I do know I sprung for Top Devices at that time, made a 2 year commitment, and have a headache from listening to my two college age kids complain about their RAZR's. Too slow... on it's last leg... yada yada. Yes, they have cared for them. No physical damage. Dumped as much as possible to an SD card to free internal memory. Still... complaining! I made a 2 YEAR COMMITTMENT... yet in the final months... the devices are proving unworthy of that commitment?