Even if you like your BlackBerry's theme, changing the wallpaper can give your phone that extra personal touch. Using a picture of your pet or grandchild as your BlackBerry's wallpaper will give you a pick-me-up when you look at it throughout the day.
To change your BlackBerry's wallpaper, click on Media, choose Pictures, and then click on the photo library that contains the picture you would like to use.
Select the picture you want to use, click the Menu key, and then choose Set as Wallpaper from the menu.
That's all you need to do to customize your BlackBerry's wallpaper. If you take a lot of photos with your BlackBerry, you can use those photos to keep your BlackBerry wallpaper interesting. A quick Google search can also help you find new wallpaper for your device.