AOC A831L-D User Manual page 26

3. Voice call Ringtone
In picture 4.27, click phone ringtone to choose voice call ringtone, as Picture 4.22
(Note: Except standard, silent, meet, outdoor are only for selection, they can't be set.)
4.7 Display
4.7-1 Adjust the screen brightness
1. Click Setting application procedure.
2. Click display, choose brightness,
3. Drag the portlito to adjust the brightness volume.As Picture 4.23
Picture 4.21
Picture 4.22
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