Android phone sales have overtaken the iPhone in the North American market for the first time, Gartner found today. Thanks to a 906 percent surge in shipments worldwide to 5.21 million phones, Google's mobile OS outpaced Apple's in North America and the US in particular. The analysts didn't readily provide numbers, but it suggests that the majority of Android phones were sold in the US as Apple sold 2.7 million US iPhones.