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How to Authenticate with an SMS Text Message for Two-Step Authentication

The SMS (text message) option is no longer recommended. Duo Mobile Push for smartphones or tablets is the recommended authentication method. 

If you select SMS as your authentication method, a text message with a seven-digit passcode is sent to your device. The SMS text message is sent from the short code 386732. Each passcode can be used only once.

Note: If you travel internationally and have SMS set as your two-step authentication method, the text messages you receive may incur substantial roaming charges.

The following devices support using SMS text messages to verify your identity:

  1. When the two-step authentication screen appears, click Enter a Passcode.

    Image of screen with button to enter a passcode

  2. A blue bar appears at the bottom of the screen. Click Text me new codes in the bar.

    Note: You will only be sent one seven-digit passcode.

    Screen with box saying text me new codes

  3. A text message with a seven-digit passcode is sent to your device. The text in the blue bar at the bottom of the screen changes to confirm that you were sent a code.

    Screen with box saying codes sent sucessfully

  4. Open the text message on your device to retrieve your passcode. The text message is sent from the short code 386732.

    Image of text message on device

  5. Enter the passcode in the box on the screen and click Log in.

    Screen with box to enter code and log in button

 

Last modified April 16, 2018