Press the "Menu" key, which is located to the left of the trackball, to bring up the main screen.
BlackBerry Messenger, or BBM, is an instant messaging program that allows BlackBerry users to send messages to other BlackBerry users. If you do not use the program or you no longer want it installed on your Tour, removing BBM will free up a little bit of memory for other applications. The procedure for deleting BBM depends on which software version is installed on your BlackBerry Tour.
Software Version 4.7.1 or Later
Scroll down until you are highlighting the "BlackBerry Messenger" application.
Press the "Menu" key and choose "Delete." Select "Delete" again to confirm your selection. Press "Yes" to restart the device and complete the deletion process.
Software Version Prior to 4.7.1
Press the "Menu" button to bring up the main application list.
Scroll down to the "Options" icon and press on the trackball to select it. Scroll to "Advanced Options" on the next screen and select it. Finally, select "Applications" from the next menu. After a few moments, a list of all applications installed on the Tour will appear on the screen.
Scroll down to "BlackBerry Messenger." Press the "Menu" key and choose "Delete" from the menu that appears. Select "Delete" again to confirm your decision. Select "Yes" to restart the BlackBerry Tour.