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AT&T Call Protect

Learn how AT&T Call Protect service provides automatic network-based fraud call blocking and spam call warnings.


Learn more about AT&T Call Protect

AT&T Call Protect1 uses the power of the AT&T network to:
  • Block calls in the network from likely scammers.
  • Block numbers you specify.
  • Alert you if a call is suspected spam (in HD Voice coverage areas).
  • Your business users can manage their own calls using the AT&T Call Protect mobile app.

AT&T Call Protect features extend to block calls received on the primary smartphone number when:
  • NumberSync is synced with a device.
  • Using Wi-Fi Calling.
  • On an AT&T Video Call.

AT&T Call Protect requirements

To use AT&T Call Protect your CRU users need:
  • An HD Voice capable iOS or Android smartphone.
  • A postpaid consumer or business (except government) AT&T wireless account provisioned with AT&T HD Voice.
  • To be within AT&T HD Voice coverage area to receive spam call warnings.

To learn more and to download the app2:
  • Authorized Business users may login to their AT&T Premier account, and add either the AT&T Mobile Security & Call Protect Basic service, or the AT&T Mobile Security & Call Protect Plus service, for more information visit
  • Once the feature is active, your CRU users will receive a confirmation text message with a link to download the optional AT&T Call Protect app, and the account holder will receive a welcome email. Data rates may apply for app download and usage.

AT&T Call Protect features

AT&T Call Protect is a service providing the following features:
  • Automatic Fraud Blocking3 Potential fraud calls are blocked before they reach your CRU users phone. Automatic fraud blocking works even when using Wi-Fi Calling and NumberSync. Call Protect will only function on the primary smartphone number when NumberSync is synced with a device.
  • Suspected Spam Call Warning4 alerts your CRU user on the incoming call screen when a call originates from a suspected spam source. These sources could include telemarketers, politicians, debt collectors and more. Your CRU user can choose to reject or accept the call.
    Note: Spam warning requires the device to be in an AT&T HD Voice coverage area. LTE (iOS) or Enhanced LTE (Android) must be toggled to On (your CRU users should refer to their device instructions for the location of this function). 
  • Temporary Call Block5 Your CRU user can manually block unwanted calls for up to 30 days using the AT&T Call Protect app. Their blocked numbers can be individually renewed every 30 days within the AT&T Call Protect app. These callers are blocked in the network so even if they turn off their phone, the numbers will still be blocked.
    Note: Temporary call block cannot block unknown numbers or callers that hide their Caller ID at this time. However, likely fraudsters are still automatically blocked through Automatic Fraud Blocking. If your CRU user’s phone provides a block list feature, the numbers they add to the AT&T Call Protect app will not appear on that list.

Block a caller with AT&T Call Protect
Your CRU user can manually block callers for up to 30 days in the AT&T Call Protect app.5 If they don’t have the app, they can download it from the App Store or Google Play. Data rates may apply to app download and usage.

To learn more, visit AT&T Call Protect app.

Your CRU users can block an unlimited amount of numbers for up to 30 days.  If they want to continue to block numbers beyond that time, they can renew them individually in the AT&T Call Protect app.

View your list of blocked calls
Your CRU user can view their list of blocked calls and the reason why they were blocked in the AT&T Call Protect app.

AT&T Call Protect has stopped working
If your CRU user’s AT&T service is active but AT&T Call Protect stops working, ensure that:
  • LTE on iOS is turned on.
  • Enhanced LTE services on Android is turned on.

If you have disabled these services, AT&T Call Protect will not work and may have to be set up again.

LTE will be disabled automatically if you or your CRU moves the SIM to a device:
  • That is not compatible with AT&T HD Voice.
  • Or does not have AT&T HD Voice enabled.  

Customers with Cequint Caller Name ID on their Android device
  • If you have Cequint Caller Name ID feature on your CRU user’s device it will override the AT&T Call Protect Spam Warnings. However, call blocking will work normally since that happens in the network before ringing the device.
  • If your CRU user receives an AT&T Call Protect Spam Warning from someone they know, and they don't want future calls to be labelled with Spam Warning; they should simply add that caller name and number to their device address book. 
  • Contact names stored in the device address book override AT&T Call Protect Spam Warnings.

Features and services not compatible with HD Voice
The following AT&T wireless services and features conflict with AT&T HD Voice and are not compatible with AT&T Call Protect.
  • OfficeDirect/OfficeReach
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Additional information

Cancel AT&T Call Protect
You may cancel service anytime:
  • In Premier, by a person who can make changes to the account.
  • Contact us.

Note: If you cancel AT&T Call Protect, your settings, including your call block list, will be deleted upon cancellation.

See all important details
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