Assign an application to a convenience key

Your BlackBerry smartphone has one or more convenience keys on the side of the smartphone. Depending on your theme, you might not be able to change the application that is assigned to a convenience key.
  1. On the home screen or in a folder, click the Options icon.
  2. Click Device > Convenience Key.
  3. Change the Right Side Convenience Key Opens field or Left Side Convenience Key Opens field.
  4. Press the Menu key > Save.