Microsoft's share of the smartphone market has crashed in the US, while Google has made the biggest gains.
Market analyst comScore rated RIM (Research in Motion) as the leading mobile smartphone platform in the US with 43% share of US smartphone subscribers.
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Apple ranked second with 25.1% share (up 0.3%), followed by Microsoft at 15.7% (down 4% since October 2009), Google at 7.1% (up 4.3%), and Palm at 5.7%. comScore said Google's Android platform is continuing to make rapid gains in market share.
While texting was by far the most popular mobile application, with 63.5% of smartphone subscribers using SMS, an increasing number were using their devices for web browsing (28.6%). Accessing social media networks was the fastest growing activity, up 3.3% from October 2009, with 17.1% of US smartphone subscribers using their devices for social networking.