I have the Droid Maxx and it has shut off/powered off randomly three times already. Once, the battery was fully charged and I was not using the phone. Once the battery was at about 50-55% and I was on a social networking site and this last time I was in the middle of a phone call and the battery was at 30%. Has anyone else had this issue? The last time it shut down on me, when I started it back up it was saying it was formatting the sim card for my new phone???????? I cut it back off because it never came off that screen and when I cut it back on, it's working again.