In a pair of related developments, Microsoft has retreated from earlier claims that its phone OS was more popular in China than iOS just as new figures for the first quarter of 2011 show that Apple has nearly tripled its sales of iPhones in the country and raised its share from eight to 19 percent, mostly due to the launch of the iPhone 4S, which was launched with two of China's major carriers in January to great demand and some crowd issues.
