There is no need to input anything for internet settings as the Imagio will have a selection on the connections screen that says "Automatically configure connection". I spent days on the phone with Tmobile and HTC and they kept telling me to go to screens that Imagio was never setup with. Once you have SIM Unlocked and set it to GSM Only and go to the connections screen and select Automatically configure connection it will pull all of the APN settings from AT&T.