Research in a mobile world

According to data from comScore MobiLens, smartphone penetration in the U.S. has grown from 11 percent of mobile subscribers in April 2009 to more than 20 percent in April 2010 -- nearly double in just one year. The total number of smartphone subscribers now totals more than 48 million.

The biggest player in the smartphone market remains RIM with its popular Blackberry devices, currently owning more than 40 percent share of smartphone subscribers. Apple holds a firm grip on the #2 position with 25 percent share of mobile subscribers, up from 20 percent in April 2009.

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Americans Get “Smart”: iPhone, Android and the Accelerating Adoption of Smartphones