1. From the home screen, tap Phone.
   
2. Press the Menu key.
   
3. Tap Call settings.
   
4. Tap Additional settings.
   
5. Tap Caller ID.
   
6. Tap Hide number to hide caller ID.
   Note: To block your Caller ID on a per-call basis, dial *67 before the 10-digit phone number.
   
7. Tap Show number to show caller id.