AT&T does this on their Android phones pretty frequently. Missed my alarm the other day because they decided to push an update overnight and you need to input a

AT&T does this on their Android phones pretty frequently. Missed my alarm the other day because they decided to push an update overnight and you need to input a password to boot into your phone after it restarts. I'm just waiting till the high profile lawsuit where someone can't call 9/11 because AT&T just forcibly turned their phone off.