"AT&T ended the quarter with 79.6 million wireless subscribers of which just under 9 million had iPhones." AT&T reported earnings today. "AT&T activated more than 2.4 million iPhones in the quarter, and more than a third of those were for customers who were new to the carrier. Apple Inc. and AT&T launched a new model of the phone on June 19." "AT&T added a net 1.37 million wireless subscribers, a strong showing in a market that's approaching saturation, and more than analysts had expected. Together with the evident popularity of the iPhone, it could mean that AT&T has benefited at the expense of other carriers this quarter." http://finance.yahoo.com/news/Econo...8.html?x=0&sec=topStories&pos=5&asset=&ccode= Note that the 9 million does not include jail broken iPhones on T-mobile's network. If you add those, the number of iPhones in the U.S. is likely over 10 million.