Block or Unblock Calls
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Block or Unblock Calls

Block or unblock calls from your device. Block anonymous calls.


Prenote info

To block calls from your tablet, you must update your device to the most current software version and set up NumberSyncSM. When a call is blocked, it is routed directly to voicemail. The call blocking feature may not affect phone calls via third-party apps installed on your device. Contact third party app developers for assistance with such applications.

In this tutorial, you will learn how to:


• Access blocked numbers
• Block and unblock numbers
• Block unknown numbers
• Access AT&T ActiveArmor Mobile Security


Access blocked numbers

1. From the home screen, select the phone Phone app.


2. Select the Menu icon Menu icon, then select Settings.


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3. Select Block numbers.


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Block and unblock numbers

From the Block numbers screen, you can add or remove numbers from the block list. Select the desired option:


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• BLOCK PHONE NUMBER: Enter the desired phone number, then select the Add icon.

• RECENT CALL: Select Recents, then select the desired number. When finished, select Done.

• CONTACTS: Select Contacts, then navigate to and select the desired contact. When finished, select Done.

• UNBLOCK PHONE NUMBER: Select the Remove icon next to the desired number.


Block unknown numbers

From the Block numbers screen, select the Block calls from unknown numbers switch.


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Access AT&T ActiveArmor Mobile Security

To automatically block calls from likely fraudsters, get alerts on suspected spam, and manually block calls learn more about AT&T ActiveArmor. Free for eligible users.

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