19% of mobile handsets shipped in Q2 2010 were smartphones

"The second quarter saw 60 million smartphones shipped around the world, a 43 percent jump from a year ago, according to a study released Thursday by research firm Strategy Analytics.
Growth was driven by robust subsidies from carriers, strong competition between high-end vendors, and a rising selection of lower-cost phones running systems like Android and Symbian, according to the study. Overall, smartphones accounted for 19 percent of all handsets shipped during the period."
Source:  Data from Strategy Analytics, reported by CNET, 22nd July 2010