if the physical buttons of your phone can not use properly, Back Button can let you continue use your phone with simulating the system button.
* Any combination you want.
you can use Back, Home or Recents independently, or any combination you want.
* Drag or Pin it.
the back button can be dragged any where your want.
you can pin it and disable the dragging.
* Custom theme
You can set the button color, pressed color and the background color. and you can also make the button with transparency.
* Vertical and Horizontal Support
* Boost Support. you can click the boost button on the notification. we will boost your phone with memory clean.
Thank you for your download.