1. From the home screen, tap Phone.
   
2. Tap the Menu key.
   
3. Tap Settings.
   
4. Tap Additional settings.
   
5. Tap Caller ID.
   
6. Tap Hide number to never send your 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 always send your Caller ID.