Although Verizon an impressive total of 2.2 million iPhones in the first quarter of 2011, it was still no match for AT&T, which activated 3.6 million iPhones in the first quarter of 2011, a 33% increase over the 2.7 million iPhones it activated in the first quarter of 2010. AT&T also has said that 23% of iPhone activations in the first quarter of 2011 represented new subscribers, meaning the carrier is still attracting new users even though it no longer holds exclusivity rights for the iPhone. Although a issued by ChangeWave earlier this year suggested that one in four AT&T iPhone users would switch to Verizon once Verizon got the iPhone, there has so far been no indication of a mass iPhone exodus from one carrier to another.

in Network World's Anti-malware section.