1. From the home screen, tap the Messages icon.
   
2. To add a number to the message block list, tap the desired message.
   
3. Tap the More icon.
   
4. Tap Register spam number.
   
5. Tap YES.
   
6. To remove a number from the message block list, tap the More icon, then tap Spam manager.
   
7. Tap Spam settings.
   
8. Tap Spam numbers.
   
9. Tap and hold the desired number.
   
10. Tap Delete.
    
11. Tap YES.