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msnbc.com
updated 7/27/2011 12:01:07 PM ET 2011-07-27T16:01:07

More than 420 million smartphones will be sold worldwide this year, and will account for 28 percent of all cellphone sales, IMS Research says.

Among the reasons for the growth, IMS says: More affordable smartphones coming on the market. By 2016, the firm expects global smartphone sales will reach 1 billion devices, largely because of more affordable, entry-level handsets.

Apple's iPhone, while not entry-level — although such a version has been bandied about — did account for 19 percent of global smartphone sales in the first quarter of this year, compared to 16 percent in the first quarter of 2010, IMS said.

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