APN Set up for Unsupported DevicesNETGEAR AIRCARD 779S / AT&T UNITE EXPRESS To add an APN for another network: Launch a web browser from a computer or Wi-Fi device that is connected to the network. Enter http://attwifimanager or http://192.168.1.1. A login screen displays. Enter the password in the Sign In field. The default password is attadmin. The password is case-sensitive. Select Settings > MOBILE BROADBAND > APN. Click the Add button. Enter a name for the APN.