2FA methods supported by AT&T
Adding two-factor authentication is one of the most effective ways to protect your AT&T account. With TOTP support, you can generate AT&T verification codes directly in the Authenticator App.
SMS
AT&T can send a one-time verification code to your phone via text message.
AT&T 2FA — Frequently asked questions
Does AT&T support an authenticator app?
Yes. AT&T supports time-based one-time passwords (TOTP), so you can add it to the Authenticator App and generate verification codes right on your device.
Which two-factor authentication methods does AT&T support?
AT&T currently supports: SMS.
Is it free to generate AT&T codes with the Authenticator App?
Yes. The Authenticator App is free to download, and generating AT&T verification codes does not require an account or sign-up.
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