Samsung Galaxy Watch Ultra
Android Wear OS
1. Find "Display"
Slide your finger upwards starting from the bottom of the screen.
Press the settings icon.
Press Display.
2. Turn automatic brightness on or off
Press the indicator next to "Adaptive brightness" to turn the function on or off.
3. Adjust screen brightness manually
Press Brightness.
Slide the circle to select the required brightness.
4. Return to the home screen
Press the Home key to return to the home screen.