O2 has announced a deal with BT Openzone to expand the unlimited Wi-Fi package offered to all iPhone customers. Beginning July 11th, iPhone users will have access to more than 3,000 BT Openzone premier Wi-Fi hotspots as part of their monthly O2 tariff, for no extra cost. The addition of BT Openzone’s more than 3,000 hotspots to O2’s existing arrangement with The Cloud brings the total number of available public Wi-Fi hotspots for iPhone customers…