=> 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 your want.
the back button can be set vertically or horizontally any where your 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 Horizontal Support

Thank you for your download, please give feedback for better performance.