1. To block messages, from the homescreen, tap Messages.
   
2. Tap the Menu icon.
   
3. Tap Settings.
   
4. Scroll to and tap Spam filter.
   
5. Tap the Spam toggle to turn on or off.
   
6. To add a number to the message block list, tap Add to spam numbers.
   
7. Tap the Add icon, enter desired number and tap SAVE.
   
8. To remove a number from the message block list, tap the Delete icon.
   
9. Tap the desired number, and tap OK.