I have a Sony S tablet and my 3 1/2 year old loves to play the coloring games and a lot more. Somehow a child lock feature that was not on before has been engaged. When she tries to back out of any of the apps it says "CHILD LOCK you have to hit the back button two more times before you can back out". Again, I have no idea how this feature got turned on and I desperately want to figure out how to disengage this feature. She now annoys me every 30 seconds wanting to switch apps and can not back out. PLEASE HELP!!! Thanks