BlackBerry SWD-1735726-0622010334-001 用户手册

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Troubleshooting: Screen display
My display changed
Depending on your theme, display options such as icons, fonts, and your home screen background might change when you 
switch themes.
No application opens when I press a Convenience key
Try the following:
• If you haven't done so, assign an application to the key.
• Verify that you didn't delete the application that you assigned to the key.
The screen turns off
When you don't use your BlackBerry smartphone for a period of time, the screen turns off to conserve battery power. You can 
change the length of time that the backlight stays on when you aren't touching your smartphone.
To turn on the screen, click the trackpad or press a key.
Related information
A pop-up menu appears when I touch the screen
When you touch and hold your finger on the screen for a certain amount of time, a pop-up menu appears to provide a quick 
way to select common menu items.
You can turn off pop-up menus or change the touchscreen sensitivity options to increase the amount of time before pop-up 
menus appear.
Related information
User Guide
Screen display
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