How to off sleeping mode

Solution
Try going into "Settings" and then "Display". In there you should see a section for "Sleep", "Sleep Mode", or something similarly named. You can change the settings in there.

Now please note many phones don't allow it to be totally turned off. But then may have extended lengths of time it will stay on. A phone should only go into sleep mode when it is not in use though. It shouldn't do it while you are actively using it (touching the screen). Just remember that the longer you leave it on, the faster your battery drains.
Try going into "Settings" and then "Display". In there you should see a section for "Sleep", "Sleep Mode", or something similarly named. You can change the settings in there.

Now please note many phones don't allow it to be totally turned off. But then may have extended lengths of time it will stay on. A phone should only go into sleep mode when it is not in use though. It shouldn't do it while you are actively using it (touching the screen). Just remember that the longer you leave it on, the faster your battery drains.
 
Solution