US cell phone sales in general were down 22% in Q1 2008, compared to Q1 2007, according to The NPD Group. Smartphone sales represented 17% of all cell phone sales in Q1 2008, up 10% from Q1 2007.
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US cell phone sales in general were down 22% in Q1 2008, compared to Q1 2007, according to The NPD Group. Smartphone sales represented 17% of all cell phone sales in Q1 2008, up 10% from Q1 2007.