This is a powerful tool that allows you to lock and unlock your Android device with a simple touch. With this, you will be able to disable the screen and keep it on when you need it. You can also set the device to power off completely when you press the button. 

To use the app, open it and start the procedure. Press the button to power off the screen, and then tap the button to lock it. You can also set it to power off completely when you start the app. 

Note: This app uses the Device Administrator's permission.