1. Folders can only be made in the Press the menu key (to open the menu. Tap or click the "Add Folder"
2. Type a name for the new folder and then make something more specific such as bookmarks browser, or application of existing social networking accounts on our BlackBerry devices.
3. Click on the folder icon to the left of the new folder, as shown above. Tap or click that we like, and then click add folder.
Quite simple, simple and easy. But this can only be done for you BlackBerry users with OS 7.0.