Call it growth, or saturation, but the iPhone continues to dominate the mobile marketplace. During the first quarter of 2012, AT&T sold 5.5M smartphones, 4.3M of which were iPhones. Of iPhone activations, 21% were net-new additions. Verizon reported activating approx 3.2M iPhones during the first quarter of 2012, up from 2.2M same period 2011.