Originally Posted by kj2112
Backup your stuff and reflash rom or Odin to stock.
If it still does it, if could be hardware failure.
Sent from my N5, N7, Moto X, G Tab 3 or S2.....
As much as possible is a hardware failure because it made the downgrade of version 4.1.2 to 2.3.6 and have the same problem