LG U900 Owner's Manual

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Backlight
Allows you to set backlight duration, selecting
from the following options: 5, 10, 15, 30
seconds, 1, 2, 3 minutes, On, and no always
Off. 
Main screen duration
Keypad duration
Greeting message
You can write a text message to be displayed
when the videophone is switched on.
41
Item
Default Value
Off
5 seconds
10 seconds
Main screen duration
15 seconds
30 seconds
1 minute
2 minutes
3 minutes
On
Off
5 seconds
10 seconds
15 seconds
Keypad duration
20 seconds
On