User's Manual

PM451 Android 9.0 User Manual
27
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Learning the basics
Settings
There are two ways to go to
Settings
:

Open the App drawer and tap
Settings

Open the Quick setting panel and tap gear icon
Adjust Display Brightness
To adjust the display brightness level,

Open Quick setting panel and adjust display brightness bar

Go to
Settings
>
Display
>
Brightness level
You can also adjust the brightness using the keypad. See Keypad – Special Functions.
Adjust Sound
To adjust sound volume, go to
Settings
>
Sound
and control the Media, Alarm, Notification
volume bars. You can also adjust the volume using the keypad. See Keypad – Special Functions.
Caution:
Using high brightness levels for long periods may cause eye strain and increase
battery consumption.
Caution:
Using high volume levels for long periods may cause ear strain and increase
battery consumption.
Figure 25 High brightness level(higher than 80%)
Figure 26 Normal brightness level
Figure 27 Volume bar