AT&T has announced that with iPhone OS 3.0, iPhone users will no longer need to go through a two-step authentication process in order to access one of the company’s Wi-Fi Hot Spots. According to AT&T, auto-connect will be established once a customer connects his/her iPhone to an AT&T Wi-Fi Hot Spot for the first time; following this connection, the user should be able to seamlessly switch from AT&T’s 3G network to an AT&T Hot Spot without being prompted. AT&T operates more than 20,000 Wi-Fi Hot Spots in the U.S.