Your new ID will have to be an email address.
Here’s how to change the ID you use to sign in to myAT&T. If you want to use an ID you already have for another account, go to the Combine IDs
- Go to your myAT&T Profile and scroll to Sign-in info.
- Choose Edit for your User ID.
- Enter your new ID. If you enter an existing ID, we may offer to combine them.
- Check the box to Save your ID, if you see it.
- Save your changes.
Be sure to use your new ID the next time you sign in.