Android accounted for 28% of the sales in the US smartphone market in the first quarter of this year, with the iPhone mustering up a 21% share, according to research from the NPD Group. However, both handsets still fall well short of the 36% share achieved by Blackberry.
Google launched its first device, the G1, more than a year after Apple's first iPhone was released.
Since then the popularity of the operating system has rapidly increased thanks to a range of new handsets.
Earlier this year, Google's chief executive Eric Schmidt revealed that 60,000 phones that use the Android system were being shipped per day.
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