This app uses the AccessibilityService API. => The System Back, Home and Recents Button. If the physical buttons of your phone can not work properly, Back Button can continue work your phone with simulating same as system button. => Set position of button where you want. the back button can be set vertically or horizontally any where you want. => Custom icon You can set the button background color, and the icon. and you can also make the button with transparency background. => Vertical and