Blackberry 8100 - Manual (Page 214)

Turn on standby mode
If you are not on a call, you can turn on standby mode to avoid pressing keys accidentally when you are not using your BlackBerry® device.
Hold the Mute key.
To turn off standby mode, press the Mute key again.
Themes
About themes
Depending on your wireless service provider, you might be able to set a theme on your BlackBerry® device that changes how items such
as applications, indicators, words, and icons appear. Themes might be preloaded on your device, or you might be able to download themes
that are in .cod file format.
Switch themes
1. In the device options, click Theme.
2. Click a theme.
Delete a theme
You can only delete themes that you have downloaded to your BlackBerry® device.
1. In the device options, click Theme.
2. Highlight a theme.
3. Press the Menu key.
4. Click Delete.
Download a theme
Verify that your wireless service provider supports this feature.
1. In the device options, click Theme.
2. Press the Menu key.
3. Click Download Themes.
Display troubleshooting
My device screen turns off
When you do not use your BlackBerry® device for a period of time, the screen turns off to conserve battery power.
To turn on the screen, click the trackball or press a key.
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