24/7 security you can count on

Download the free AT&T ActiveArmorSM app and we’ll do the rest.

Because your security is our top priority

Block those annoying spam calls

AT&T ActiveArmor mobile security helps identify unknown callers you can block or send directly to your voicemail to verify later.
May inadvertently block wanted calls; settings can be adjusted in the app. All call categories, except Fraud, are automatically set to allow. Manage all settings via app.  See details

Stay on top of breaches

Get in-app alerts when companies you follow experience a data breach.
May not detect all threats.

Get the advanced security advantage

Included with our best personal and business plans at no extra cost. Or, add it for $3.99/mo.

Identity Monitoring

Get alerts and helpful tips if your personal info is leaked.

Public Wi-Fi® Protection

A private connection protects your data from public Wi-Fi.

Reverse Number Lookup

Get details on who called you when you enter a U.S. number.

Advanced security requires AT&T Unlimited Extra, AT&T Unlimited PremiumSM, AT&T Business Unlimited Elite, AT&T Business Unlimited Performance, AT&T Business Mobile Preferred, AT&T Business Enhanced Advanced or AT&T Business Enhanced Pro plan.
Advanced features $3.99/mo. for all other plans. Subscription auto renews and bills monthly.

Frequently asked questions

  • What is the AT&T ActiveArmorSM mobile security app?
    We merged AT&T Call Protect and AT&T Mobile Security apps into a single mobile app. It is a free mobile app to help you easily secure your personal data, help block spam calls, and more.
  • Who is eligible for the free AT&T ActiveArmor mobile security features?(App download is req’d)

    All AT&T wireless customers can benefit from the free AT&T ActiveArmor mobile security app. You must have:

     AT&T WirelessSM or AT&T PREPAIDSM service
     Smartphone with iOS 12+ and/or Android 9++ or higher purchased through AT&T
     HD Voice-capable smartphone

    FYI: If you have a business account, check with your account manager for eligibility and requirement details.

  • How do I get AT&T ActiveArmor mobile security added to my wireless account?
    Download the free app from the Apple App store or Google Play Store, read and accept the terms and conditions. Once installed, open the app, and begin customizing your mobile security preferences.