I have a sony xperia tablet z which has no physical out-of-screen "back" or "home" button on it. In some android apps there is no exit button in the app too and I wonder how to get out of these apps. the only thing come to my mind is to power the device off and uninstall the app forever. Please let me know if there is solution. Thanks
Re: back button
So, you have onscreen buttons, and they disappear when using the game? Have you tried tapping where the buttons should be? That should make them visible again.
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