The display stays on after you start some android app [duplicate]
After launching the Play Store, for example, or some android app (I am not able to understand what exactly) the display do not turns off by itself ( after XX seconds predetermined in the display settings ) ... but remains lit.
How is it possible to send a kill of all android applications? I have noticed that "it is not enough" swipe down to close permanently all previous opened android apps.
i think that some app prevents the display to turn off.