This page provides information on how turn on backlighting and control the brightness

To use your device in dark environments, enable the automatic backlighting feature:

1. At Jump screen, press the Menu key.
2. Select Settings > Battery & Display.
3. Scroll to and select the check box next to Turn on backlight when using device.
4. Scroll to and select Brightness slider.
5. Scroll right to increase brightness. Scroll left to decrease brightness. After you've made the adjustment, press the Trackball to exit edit mode.
   
   
   
   
6. Scroll to and select Turn off after field.
7. Select the desired length of time.

NOTE: To use the device's light meter while the backlight is on, select the Use ambient light sensor check box.
Now, when you press any button or key, or flip open the screen, backlighting will turn on for the set amount of time. Note that as long as you press a key or button before the set time elapses, the backlight will stay on.
Tips:

• Even if you have not selected automatic backlighting, you can turn on backlighting at any time by pressing MENU + JUMP . The backlight will remain on for the time specified in the Backlight Turn off after pop-up menu.
• When in key guard mode, you can turn on the backlight by pressing the RIGHT SHOULDER button.

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