Apple has won back lost ground in its ongoing battle with the Android mobile platform.
Reports from metrics firm Nielsen found that the iOS platform has increased its overall market share in recent months, closing the gap on Google's Android operating system.
The US consumer study found that iPhones made up 44.5 per cent of handsets bought in December 2011, up from 25.1 per cent in October. Much of the gain was credited to the iPhone 4S, which accounted for 57 per cent of iOS device sales.
This figure has helped Apple eat into Android's market share. Since taking the top spot from Apple in May 2011, the Google platform has enjoyed a steady advantage in market share.
Over the past three months, Nielsen estimates that 37 per cent of all purchases were iOS devices, while 51.7 per cent of sales were Android handsets. Just six per cent of new sales were credited to the beleaguered BlackBerry brand.
RIM remains fairly strong in overall market share, though, claiming 14.9 per cent. Apple has a 30 per cent share, while Android is credited for 46.3 per cent of US handsets.
Smartphone sales also continue to thrive as a whole. The study found that 60 per cent of recent handset acquisitions were smartphone models. Overall, 46 per cent of all handsets in the US were smartphones.
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