There is a huge list of secret codes for the Samsung Galaxy S11-think that the Manuel won’t tell you.
For example, open the dial pad and key in *#0*# to enter a general text mode. Here you can switch on a solid color on the screen to check for any dead pixels, view the functions of the accelerometer, magnetic sensor, check the touch screen and so on.
*#0842# will help you test out the vibration motor,
*#44336# gives you the software version info,
*#0589# lets you test the light sensor and
*#0588# lets you test the proximity sensor.
All these codes have to be entered on the dial pad in the exact order displayed for the test menu to open up.
