Features:
1. Open System's Default Power menu
2. Lock the Phone Screen
3. Volume buttons for Screen Locking

this app Uses BIND ACCESSIBILITY SERVICE permission to perform Global Actions like:
1. Lock the Screen
2. Open System's Default Power Menu
3. monitor key events of volume button For Screen locking

Important, a device can only be turned on by the hardware power button, as far as we know. so please only turn of your phone if your device's hardware power button is functional.

Uses ACCESSIBILITY SERVICES to perform those 3 operations mentioned above.