Use APKPure App
Get One Touch Lock Screen old version APK for Android
Un seul clic pour éteindre l'écran et le dispositif de verrouillage sans toucher le bouton d'alimentation
One click to turn off screen and lock device without touching power button。
Use the app first，You must activate administrator will allow the app to preform the following operation：Lock Screen.
The app is lightness and no activity.
The app is sample "ABC" locker
You just need to touch the app icon lightly，the phone screen can be turned off quickly.