Samsung SGH-C207CSACIN - Manual (Page 21)

Your Phone
20
Backlight
A backlight illuminates the display and the keypad. When
you press any key the backlight turns on. It turns off when
no keys are pressed within a given period of time,
depending on your setting in the Back Light menu (Menu
9.1.6). After one minute, the display turns off to conserve
your battery power.
To specify the length of time the backlight is active, set the
Back Light menu (Menu 9.1.6). See “Back Light” on
page 154 for further details.