Samsung SGH-T709BKBTMB - Manual (Page 102)

Sect
ion 8
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Interior display
You can select the color of the menus displayed. There are
two different patterns to choose from.
Brightness control
You can adjust the display brightness to see it better in
different lighting conditions.
Press the Left or Right Navigation key or press the
Volume
keys to adjust the brightness. Press the Save soft
key when you are finished.
Backlight
In this menu, you can select the length of time that the
keypad backlight is on and how much longer the display
is illuminated before going off.
The On setting is how long the keypad backlight is on. You
can select 15 seconds, 30 seconds, 1 minute, 3 minutes, or
10 minutes.
The Dim option is how much longer after the keypad
backlight goes off that the display remains lit. You can
select Off, 5 seconds, 15 seconds, 30 seconds, 1 minute or
3 minutes.
For example, if you set On for 30 seconds and Dim for 5
seconds, after 30 seconds the backlight on the keys would
turn off and 5 seconds later the display light would turn
off.
Press the Left or Right Navigation key to adjust the
settings.