proximity sensor

4 smartphone sensors you can test in the Physics Toolbox app.
you can use the physics toolbox app to test the following four key smartphone sensors.
Why is the smartphone screen always off when you listen to the phone?
the fact that the smartphone screen turns off when we listen to the phone not only helps to prevent a part of the body (such as the ear) from touching the screen and disrupting the call but also saves the device's battery .