Recent content by warren wise

My galaxy tab 2 10.1 tablet only goes to 1 min. My galaxy tab 2 10.1 tablet only goes to 1 min. From what I can find out it should go to 30 minutes before screen going to sleep. I have three selections in setting under display, 15 sec, 30 sec, and 1 min. how can I get more time? And it...