Learn how to set up or change your AT&T ID. You’ll need it to manage accounts and services online or sign in to the AT&T or AT&T Smart Home Manager apps.
If you manage your accounts online at AT&T, you already have an AT&T ID. If you have more than one account, you might have more than one ID. Make sure to sign in with the ID for the account you want to manage.
You can access these accounts, services, and apps with a single AT&T ID:
FYI: If you have a DIRECTV® account, you can manage it on directv.com.