A list of all the contacts and phone numbers you’ve previously blocked will appear.
If your list of blocked callers extends beyond the screen, you’ll have to scroll down.
Repeat the previous two steps for all numbers or contacts you wish to block. You can unblock numbers from this menu by tapping Edit in the upper-right corner of the screen and selecting them.
You can also block numbers through the Contacts app.
Tap Favorites to block calls from everyone except people on your “Favorites” list. Tap Everyone to allow calls from anybody.
