Samsung SCH-R250 User Manual page 29

Backlights
Backlights illuminate the displays and the keypad. When you press
any key or open the phone, the backlights come on. They go off when
no keys are pressed within a period of time set in the Backlight
menu.
Note: During a phone call, the display backlight turns off after 10 seconds to
conserve battery power, regardless of the Backlight setting.
For more information, refer to "Backlight" on page 127.
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