Blackberry Messenger Disappears

Possible reasons: 

• Accidentally hid icon
• There was a recent firmware update.

RESOLUTION 1:

1. Press the Menu key
2. Select Options
3. Select Show All
4. Highlight missing icon.
5. De-select Hide.

RESOLUTION 2:

1. Hook up device onto computer and run Blackberry Desktop Manager.
2. Go to Application Loader.
3. Under Add/Remove Apps highlight the BlackBerry Messenger application.
4. Click Next
5. Click Finish.
6. When the process has completed, the message The loading operation was successful will appear. Click Close to return to the BlackBerry Desktop Manager.

RESOLUTION 3:

1. Delete the BBMessenger app at Options > Advanced > Applications.
2. Then, reboot: With the BlackBerry device powered ON, remove the battery a few seconds and then reinsert the battery to reboot.
3. Then once back up, use your BlackBerry browser to go to http://www.blackberry.com/blackberrymessenger  and download and install the application again.
4. Once completed and rebooting the device again, look in Instant Messaging folder or Downloads.