To adjust the screen brightness on your Grandstream phone, follow the steps below:
- Press the Circle/Menu button on your phone, located in the middle of the 4 directional buttons.
- From this Main Menu, use the navigation keys to go to Preferences and then press the Circle button again to select this option.
- From the Preferences Menu, go down to the Appearance option and select it with the Circle button.
- Use the arrow keys to toggle the brightness to your desired level.
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