1. From the home screen, tap Phone.
   
2. From the "Keypad tab", press the Menu key.
   
3. Tap Call settings.
   
4. Scroll to, then tap Additional settings.
   
5. Tap Caller ID.
   
6. Tap Hide number.
   
7. To re-enable caller ID, tap Caller ID.
   
8. Tap Network default or Show number.
   
9. To block caller ID on a per-call basis, dial *67 before dialing the 10-digit phone number.