Access blocked numbers
From the Keypad in the Phone app, select the 
Menu icon then select Settings. Select Block numbers.
Menu icon then select Settings. Select Block numbers.Block and unblock numbers
From the Block numbers screen you can Add numbers to the block list, block unknown numbers, or remove numbers from the block list. Select the desired option:
• BLOCK PHONE NUMBER: Enter the desired number, then select the
Add icon.• CONTACTS: Select Contacts, then navigate to and select the desired contact.
• RECENT CALL: Select Recents, then select the desired number.
• UNBLOCK PHONE NUMBER: Select the
Remove icon next to the desired number.
Block unknown numbers
From the Block numbers screen, select the Block unknown callers switch.