With this app you can simple one click the icon of Lock Screen to lock your phone screen immediately. This reduces the use of power button and prolongs its working life.

The system for android 8.0 and above has been fully optimized adapting to more special mobile phone models and the lock screen experience is better!

Because the special of some mobile phones if you cannot uninstall this app do as follows to solved the problem : find Lock Screen in Settings→Privacy→Device administrators and then deactivate. After that this app can be uninstalled as usual.

This app uses the Device Administrator permission