1. Go to the AT&T phone portal. Sign in with your member ID.
2. Select Address Book. From here you can:
• Select Add contact to create a new contact in your address book.
• Select the ellipses (…) in the Action column to Edit, Add to a group, Block, or Delete a contact.

FYI: Looking for contact info? Enter a search term in Quick find. You can search by first name, last name, or phone number.