From a device that is connected to the AT&T Wireless Internet network, open the web browser and go to http://att.wirelessinternet. Enter your Admin login, then click Login. Note: The APN is pre-configured to access the AT&T network. You should not change the APN unless you have a corporate account (with your own APN). Your login can be found on the bottom of your AT&T Wireless Internet.
Click Settings > Network > APN. The APN settings will be displayed. Note: Default profile selection is set to ATT Nextgenphone or ATT Phone.