Worldwide mobile phone sales grow 13.8% in Q2

Worldwide mobile device sales to end users totalled 325.6 million units in Q2, up 13.8 percent from the same period in 2009, according to a study by Gartner. Smartphone sales to end users accounted for 19 percent of worldwide mobile device sales, an increase of 50.5 percent from the second quarter of 2009.