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 add a number to the message block list, tap Add to spam numbers.
   
7. Tap the Add icon.
   
8. Enter the desired phone number.
   Note: Alternatively, tap the Contacts icon to select a contact phone number.
   
9. Tap SAVE.
   
10. To remove a number from the message block list, touch and hold the desired number.
    
11. Tap Delete.
    
12. Tap OK.