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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
to go to the Jump screen. Press
JUMP
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
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.
to
MENU
for two seconds.
3 To unlock and wake the device, open the screen or press
+
. If you have set a privacy code (see next
MENU
DONE
section), 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.
To prevent display damage, after your device has been in key
guard mode for five minutes, the screen will go black (the device
is in "sleep mode"). To wake your device, press any key or open the
screen. To learn what the blinking trackball colors mean during
sleep mode, read "Trackball light indicators" on page 31.
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