ComScore: Android, iOS combine for 75% of U.S. smartphone market

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Google's (NASDAQ:GOOG) Android and Apple's (NASDAQ:AAPL) iOS extended their dominance over the U.S. mobile market in November 2011 and now power a combined 75.6 percent of all smartphones nationwide according to new data published by digital research firm comScore.

Click here to see the changes in smartphone OS market shares during the past three years.

Smartphone ownership in the U.S. market reached 91.4 million in November 2011, up 8 percent from the preceding three-month period. Android devices make up 46.9 percent of all smartphones across the United States, up 3.1 percentage points since August 2011, comScore reports. iOS was the only other mobile platform to exhibit growth during the period, increasing 1.4 percentage points over August to capture 28.7 percent of the national smartphone segment.

Research In Motion's (NASDAQ:RIMM) BlackBerry continues its slide, dropping another 3.1 percentage points between August and November to make up 16.6 percent of the market. Microsoft's (NASDAQ:MSFT) Windows Phone platform fell from 5.7 percent in August to 5.2 percent in November, and Symbian slipped from 1.8 percent to 1.5 percent.

ComScore reports that 72.6 percent of all U.S. mobile subscribers sent text messages in November, up from 70.5 percent in August. In addition, 44.9 percent of subscribers used downloaded apps (up from 41.6 percent), 29.7 percent played mobile games (up from 28.5 percent) and 33.0 percent accessed social networking sites or blogs (up from 30.9 percent).

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