Keep unwanted callers away.
Check out the AT&T Call Protect app for wireless
Learn about Digital Call Protect for AT&T Phone
Go to Contacts and open the contact you want to block. Scroll down and select Block this caller.
Open Recent Calls and select the name or number you want to block. Tap Details, select the menu icon, and choose Block.
Use star codes to prevent unwanted calls with the push of a few buttons.
Digital home phone - press *61.
Landline home phone - press *60.