Block or unblock calls from your device. Block anonymous calls.
INSTRUCTIONS & INFO
BLOCK NUMBER: Select the Phone app from the home screen. Note: To automatically block calls from likely fraudsters, get alerts on suspected spam, and manually block calls learn more about AT&T Call Protect. Free for eligible users.
Select the Menu icon, then select Settings.
Select Block numbers.
Enter the desired number to block, or select the Contacts icon to select a number from your contacts. Note: When a call is blocked, it is routed directly to voicemail. The call blocking feature may not affect phone calls made or received via third-party apps installed on your device. Please contact third-party app developers for assistance with such applications.
Select the Add icon.
UNBLOCK NUMBER: Select the Remove icon next to the desired number.
BLOCK ANONYMOUS CALLS: Select the Block unknown callers switch.