Reference Guide

Backlighting
As long as you are actively using your device, the backlight will stay on.
After you stop using your device, the backlight will stay on for 15 seconds,
but you can change this setting:
1 Press
JUMP to go to the Jump screen. Press MENU then select
Settings > Battery & Display.
2 In the Display Backlight group box, open the Dim after pop-up menu
and select a timeout option, up to five minutes. The lower the time, the
more battery power you will conserve.
3 By default, the Use ambient light sensor check box is selected. This
conserves battery power and means when there is enough light in the
environment, the backlight will dim automatically.
Key Guard Mode
You can “lock” your device controls by entering key guard mode:
1 Press
JUMP to go to the Jump screen. Press MENU to open the menu,
scroll to highlight Key Guard, then press the trackball. You can also
enter key guard mode quickly by pressing and holding DONE for two
seconds.
2 The control buttons lock and the key guard screen appears.

To turn on the backlight while in key guard or sleep, press the right
shoulder button.
3 To unlock and wake the device, open the screen or press
MENU
+ DONE . If you have set a privacy code (see next section, “Device
Privacy Code”), type it at the prompt.
By default, your device is set to enter key guard mode after two minutes of
idle time. You can change this setting from the Jump Menu > Settings > Key
Guard & Security screen
.
28 Setting Up Your Device