Screen off Screen Lock -Save power button

只需触摸图标，它将在一秒钟内锁定您的设备。 应用程序大小仅为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.