First, make sure your Apple TV is running tvOS 10 or higher. Then:
- Go to the App Store.
- Search for and choose AT&T TV.
- Select Get for free. If prompted, enter your Apple ID password.
When you set up your AT&T TV device at home, that location becomes the residential, non-mobile internet network associated with your device. This is called your home Wi-Fi network. Accessing the AT&T TV app on your Apple TV will also be limited to your Home Wi-Fi network. You can change your home Wi-Fi network up to 4 times within a 12-month period by relocating your AT&T TV device.