Apple's dominance in the mobile industry became less pronounced in 2012, according to tracking data compiled by mobile ad network Millennial Media. Millennial notes, for instance, that while the iPhone continued to generate the most ad impressions amongst phones, growing 72 percent year-over-year to a 15.59 percent share, Samsung's Galaxy S series grew 182 percent to hit a 4.24 percent share, pushing BlackBerry Curve phones down to third place at 3.91 percent.
