A free app for Android, by LuuTinh Developer.

Smart Screen OnOff Auto is a useful application that will allow you to use your Android device to automatically power down your phone whenever the proximity sensor is activated or when you double tap the home screen. It’s a very easy-to-use application and it will help you save battery power and extend battery life. You can also set the time period during which the screen will be on or off.

It is a very useful application and it is designed to be used by people who have to keep their phone on all the time. It will allow you to power down your phone whenever the proximity sensor is activated.