According to a recent report from comScore, Google's Android is the fastest growing smartphone platform and made up 7.1% of the smartphone market in January 2010. 

RIM's Blackberry smartphone maintains a significant lead over Apple's iPhone with 43% and 25.1% market share, respectively. 

iPhones growth continues but at a much slower pace, increasing only 0.3 points in the last quarter. 

Microsoft's Windows Mobile platform slipped 4 points but still holds 15.7% of the market.  Palm smartphones, which appear to be dying a slow death, fell 2.1 points to 5.7%.  


Share (%) of Smartphone Subscribers Oct-09 Jan-10 Point Change Total Smartphone Subscribers 100.0% 100.0% N/A RIM 41.3% 43.0% 1.7 Apple 24.8% 25.1% 0.3 Microsoft 19.7% 15.7% -4.0 Google 2.8% 7.1% 4.3 Palm 7.8% 5.7% -2.1
Source: comScore: http://www.comscore.com/Press_Events/Press_Releases/2010/3/comScore_Reports_January_2010_U.S._Mobile_Subscriber_Market_Share