My Galaxy S6 won't power off, and screen is stuck on Dec 7 2015 at 17:43, what can I do?

[AC Question]

My Galaxy S6 won't power off, and screen is stuck on Dec 7 2015 at 17:43

I had no open apps or anything. It just seemed to freeze at 17:43. Can't power off, can't get to any other screens...it's frozen.

 

[dpham00]

Re: My Galaxy S6 won't power off, and screen is stuck on Dec 7 2015 at 17:43

Hold the power and home buttons simultaneously for 15 seconds to force a reboot