- Your power and volume button giving issue
- Your power and volume button not working
- You don't use the physical power and volume button that much (scared that it will broke)

Then you can use this app (★★★★★No ROOT Needed★★★★★)

You can perform
- Power off (Shutdown)
- Reboot (Restart)
- Adjust Volume any time
- Adjust Volume during video playback
- Adjust Volume during a call (Audio and Video)
- Lock screen using widget without tapping power button

This device does not collect any information. It uses accessibility service to summon the device's original power menu and lock the screen.

You can easily lookup the code on GitHub, https://github.com/Imran4424/Android-Power