Duo - Two Factor - Authentication - Mobile Phone - How to Authenticate Your Cell Phone

You will need to get the "Duo" app on the Google Play Store or the Apple App Store.

Download and Install it on your mobile device.

On an web browser go to this website. You can use a computer or your mobile device.
https://utdirect.utexas.edu/apps/duo/register/duo_login/?next=/apps/duo/register/

click on Add a new device

Choose one of the choices to authenticate – I choose Call Me

You phone that is registered with Utexas will get a call

Choose Mobile phone>continue

Enter the Phone # and check the replace this number if you already had a phone attached to "Duo" choose "continue"

Choose what type of phone

Get the Duo App or if you already have installed it select I have the Duo Mobile Installed

Follow the directions and click "Continue"