IHS iSuppli made an optimistic estimate late Wednesday that Windows Phone would overtake the iPhone in market share by 2015. It saw Nokia's switch to Windows Phones like the Lumia 900 as a catalyst, taking Windows Phone from just 1.9 percent in 2011 to nine percent in 2012 and 16.7 percent in 2015. At that rate, it would just be ahead of Apple, which researchers thought would have 16.7 percent.
