I have a Samsung Tablet that blue screens about every 30 minutes unless I am watching a movie.  I have read several other people have the same problems with the tables that have AT&T wireless.  Is this a Samsung problem or AT&T?  I have reset it to factory default twice and I still have the problem.

See the press ok screen for 20 secs before it reboots again, tech support had me switch the order of the Hdmi cord although I know it had 0 to do with it.. Any advice?

My LG G3 was working fine Thursday evening when I charged it as I normally do overnight.  The next morning, there was no response when I tapped it to wake it up.  Plugged it back in, no LED indicator light.  After removing the battery and returning it to reboot the phone, screen goes blue about 3-4