1. From the home screen, tap Messaging.
   
2. Press the Menu key.
   
3. Tap Settings.
   
4. Scroll to then tap Spam filter.
   
5. Tap the Spam filter switch to toggle message blocking on/off.
   
6. To edit the list of blocked phone numbers, tap Add to spam numbers.
   
7. To add a number, tap the Add icon.
   
8. Enter the desired phone number, then tap SAVE.
   
9. To remove a number from the Block list, tap the Trash icon.
   
10. Select the desired phone number(s).
    
11. Tap the Trash icon.
    
12. Tap OK.