January 14, 2011 Mack McKelvey In December, Android surpassed iOS as the largest smartphone operating system on the Millennial Media network, with an 8 percent increase month-over-month and 46 percent impression share. Globally, Android grew nearly 3,200 percent in 2010 on Millennial’s network, beginning from a relatively modest base. Research In Motion grew 224 percent in 2010. It is importa..