1. BLOCK: From the home screen, select the Messaging app. Select the Menu icon, then select Settings.
   
2. Select Message blocking, then select Blocked numbers.
   
3. Select the Add icon > desired contact location > enter the desired number > select BLOCK.
   Note: To quickly block messages from a number that has called you, select and hold the number from your Call log then select Block number > BLOCK.
   
4. UNBLOCK: From the Blocked numbers list, select the Delete icon. Select the desired number, then select REMOVE.
   Note: Select REMOVE again to confirm.
   
5. TURN ON/OFF BLOCK UNKNOWN NUMBERS: From the Message blocking screen, select the Block unknown number switch.