只需觸摸圖標，它將在一秒鐘內鎖定您的設備。 應用程序大小僅為700kb
To support me download my this paid App.
Screen off
Screen Lock
Touch to Lock.
Simple and small App.
This app uses the Device Administrator permission for screen off and Lock feature. It will reduce 50% usage of your power button and will make power button life long.