Download the latest version 4.09 of Button Mapper: Remap Hardware Buttons on Android

Button Mapper is a small application that enables you to remap the functions performed by the hardware buttons on your Android phone. It does not even require root access to do so. 

You can make your volume key or power key perform various functions such as opening an app, switching on your flashlight, taking screenshots, etc.

The Button Mapper App for Android takes very little time and is less than 10 MB in size. After setting it up, the app will be able to make the shortcut keys do things such as play next, increase brightness, mute calls, or access your camera. 

Moreover, the Button Mapper Android app will work not only with the buttons on your smartphone but also with other devices such as gamepads, remote controls, and many others. The paid version offers such additional features as custom key codes and themes. However, the free version is enough for most cases.

Download the Button Mapper App directly from here