1. From the home screen, tap Phone.
   
2. Press the Menu key.
   
3. Tap Settings.
   
4. Tap Additional settings.
   
5. Tap Caller ID.
   
6. To never send your Caller ID, tap Hide number.
   Note: To block your Caller ID on a per-call basis, dial *67 before the 10-digit phone number.
   
7. To always send your Caller ID, tap Show number.