Use APKPure App
Get Lock Screen old version APK for Android
One tap to lock your screen
One tap to lock your screen without pressing your device power button.
Simple. Clean. Easy to Use. No ads.
This app uses the Device Administrator permission.
Uninstall instruction:
1. Go to phone's settings -> Security -> Device Administrators -> Uncheck Lock Screen.
2. Go to phone's settings -> Apps -> Lock Screen -> Uninstall.