According to new data released by comScore, the iPhone accounts for more than a quarter of U.S. smartphone market. As of December 2009, BlackBerry maker Research In Motion led U.S. smartphone platforms, with a 41.6% share—down from 42.6% in September 2009—while Apple ranked second with 25.3% of the market, up 1.2% percent from September. Microsoft came in third, with 18% of the market, down 1% from September, followed by Palm, which accounted for 6.6% of the market, down from 8.3% in the previous report, and Google, which placed fifth with a 5.2% share, up 2.7% from September. The report ranked smartphone operating system platforms in the U.S. according to their share of current mobile subscribers age 13 and older.
ComScore: iPhone holds quarter of U.S. smartphone market

Charles Starrett
Charles Starrett was a senior editor at iLounge. He's been covering the iPod, iPhone, and iPad since their inception. He has written numerous articles and reviews, and his work has been featured in multiple publications.