1. ADD NUMBER TO BLOCK LIST: From the home screen, select the Phone app. Select the Menu icon, then select Settings.
   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.
   
2. Select Call blocking.
   Note: 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.
   
3. Select ADD A NUMBER.
   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.
   
4. Enter the desired number to block, then select BLOCK.
   
5. REMOVE NUMBER FROM BLOCK LIST: From the blocked numbers list, select the Delete icon next to the desired number then select UNBLOCK.