s10 Smart flip cover uses the proximity sensor to control your screen and flashlight.

New feature : Magic Light turns the flashlight on when when you close your flipbook cover

how to use?
Before start check if your phone has a standard proximity sensor
press start to start the proximity sensor monitoring , and use a cover, the screen will turn off
press stop to stop the proximity sensor monitoring

no setup , just install. tested with samsung s10 and works great with universal covers.