Android managed to push even farther in June as its share of subscribers increased 5.4 percent to 40.1 percent overall. Apple's iOS was the only other platform that managed to grow, which did ever so slightly by 1.1 percent to 26.6 percent overall.
Unsurprisingly, RIM dropped the most out of the top five by 3.7 percent, but it still managed to hold on to the third spot. Microsoft declined a bit as did Nokia's Symbian, which is only going to continue as Nokia is moving away from Symbian to join forces with Microsoft on Windows Phone.
Overall, comScore reported that 78.5 million people in the U.S. owned smartphones by June, up eight percent from the preceding three month period.
As for mobile OEMs, Samsung secured the victory on those charts (likely with some help from Android). The South Korean tech giant grew by a tiny amount (0.8 percent), but it still garnered roughly a quarter of the pie at 25.3 percent of U.S. mobile subscribers.
LG and Apple were the only other two mobile OEMs in the top five to grow, at second and fourth place respectively. Motorola dropped in the market share by 1.3 percent and placed third, while RIM rounded out the top five as it dropped half a percent.
Overall, 234 million Americans ages 13 and older used mobile devices during the three month period ending in June 2011.
For reference, comScore's survey was based on responses from 30,000 U.S. mobile subscribers.
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