"Microsoft's Mobile Comeback Is Looking Terrible
...

Losing Users

One troubling sign: Even now, more than a year after Microsoft started shipping Windows Phone 7 devices, U.S. mobile customers are getting rid of Microsoft devices faster than they're buying new ones.

In the three months ending in February, Microsoft's share of U.S. smartphone subscribers was 3.9%, according to comScore. That's down from 5.2% last November and 7.7% last February.
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http://www.businessinsider.com/micro...ampaign=recirc