Open the Phone app or Call log
Select the number you want to block
Press Options or More
Choose Add to blacklist, Block, or Reject number
Confirm the action
If your Nokia keypad phone has a Contacts app
Open Contacts
Select the contact
Press Options
Choose Block contact or Add to blacklist
Confirm the action
If your phone has call settings
Open Settings
Go to Call settings
Select Blocked numbers, Blacklist, or Call rejection
Add the number manually
Save the changes
If your Nokia keypad phone does not support blocking
Contact your mobile network provider
Ask for call blocking or spam blocking service
To unblock a number
Open Blocked numbers, Blacklist, or Call rejection
Select the number
Choose Remove, Unblock, or Delete from list
Confirm the action