"exit"-button and a "back"-button

[shysstkille]

Hi
Is there anybody here who know a good "exit"-button that I can close the apps with after I used them, and the same for "back"-button,so I can get to the picture before for example!

 

[Deleted User]

For the majority of apps closing the screen "exits" them hence why they don't come with exit buttons. Some e.g. with PowerAmp you long press the "pause" key to exit but that tells you that specifically in the instructions.

As for going to the previous picture .. there may be specific image viewing app that has that as a feature that someone else maybe able to advise you of.