How to change the screen timeout duration on my BlackBerry Bold 9780

Click each step to see the action. You can also click the picture or use the arrow keys.

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You can decrease the amount of time taken for the backlight to turn off when the BlackBerry® smartphone is not being used. A shorter timeout can help preserve the battery life.
1. Scroll to and select All.
2. Scroll to and select Options.
3. Scroll to and select Display.
4. Scroll to and select Screen Display.
5. Scroll to and select Backlight Timeout.
6. Scroll to and select the required setting (e.g. 20 Sec.).
7. Press the Menu key.
8. Scroll to and select Save.