Alarm set for 7:30am, never went off. Go to check the phone, it's dead. Assume my socket is bad or switched off or something, go plug the phone into another socket for ~15 mins. Phone still won't turn on. Pull battery, put in another, still dead. Pull battery, pull sim, reinsert sim, wait 15 mins, reinsert battery, plug in, turns on just fine. Put other battery back in, reboots, just fine. Turns out the battery from the start 94% charge so wasn't a power issue and the second battery was at 92%. Clock was set to 6am before it got a network signal and updated. So now I'm going to be obsessing about whether or not the alarm is going to go off in the morning - but that's my issue. My question to you all, is there anything I can do to try and figure out what happened or do I just have to chock this up to bad luck and go get a backup alarm at target?