BT Poly Trio 8300 User Manual page 21

Set the backlight intensity
The screen's backlight intensity settings adjust how
bright the screen illuminates while on, and while idle.
Set the Backlight On intensity and the Backlight
Idle intensity separately; you can choose an intensity
level or turn off the backlight entirely.
When you change the Maximum Intensity, you
modify the entire backlight intensity scale. For
example, if you decrease the Maximum Intensity,
the Low, Medium, and High levels for both
Backlight On and Backlight Idle intensities also
decrease.
• Go to Settings > Basic.
• Select Backlight Intensity > Backlight On
Intensity.
• Choose the intensity you want,
and select Back.
• From the Backlight Intensity screen, select
Backlight Idle Intensity.
• Choose the intensity you want, and select Back.
• From the Backlight Intensity screen, select
Maximum Intensity.
• Select Up or Down to increase or decrease the
maximum intensity.
Set the backlight timeout
The backlight automatically turns on with any phone
activity. By setting the Backlight Timeout, you can
pick how long it takes for the backlight to dim to its
Backlight Idle intensity. By default, the backlight
dims after the phone is idle for 40 seconds.
Go to Settings > Basic, select Backlight Timeout,
then choose the number of seconds the phone is
idle before the backlight dims.
21