According to Gartner research,
Sale of Smart Phones(such as Apple's iPhone) grew at a rate of 12.7 percent in Q1, 2009. It should be noted that the sale of handsets declined 9 percent during the same quarter.
Sale of Smart Phones in Q1 2009____________36.4 million units
Sale of Smart Phones in Q1 2008____________32.3 million units
Growth(YOY)________________________________ 12.7 percent
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