Before you begin: To perform this task, your BlackBerry® smartphone must use a SIM card, and your wireless service provider must set up your SIM card for this service and provide you with a call blocking password.

1. From the home screen, press the key.
2. Press the key > Options > Call Barring.
3. Highlight a call blocking option.
4. Press the key > Enable.
5. Type your call blocking password.

After you finish: To stop blocking calls, highlight a call blocking option. Press the key > Disable.