1. From the home screen, tap Messages.
   
2. Press the Menu key.
   
3. Tap Settings.
   
4. Tap Spam filter.
   
5. To toggle the spam filter on or off, tap the Spam filter switch.
   
6. Tap Add to spam numbers.
   
7. Tap the Add icon to add the entered number to the message block list.
   
8. Enter the number to block or tap the Contact icon to search for a number, then tap Save.
   
9. Tap the Remove icon to delete a number from the message block list.