1. From the home screen, tap Messaging.
   
2. Press the Menu key.
   
3. Tap Settings.
   
4. Scroll to, then tap the Spam settings checkbox.
   
5. Tap Add to spam numbers.
   
6. Tap the Add icon.
   
7. Enter the desired number to block, then tap Save.
   
8. To remove a number from the spam numbers list, touch and hold the desired contact or number to remove.
   
9. Tap Delete.
   
10. Tap OK.