According to a new report from Flurry, China is now the world's largest smart device market, passing the United States just after the Chinese New Year. The country has the most active Android and iOS smartphones and tablets. China began catching up to the U.S. late last year and as of January 2013, the two countries had approximately the same smart device user base, with 222 million in the United States and 221 million in China. Based on the number of devices per country in the first half of February and growth trends, Flurry predicts that by the end of February 2013, China will outpace the U.S. by a wider margin with 246 million devices compared to 230 million in the United States. China is exp