Nokia was the only large phone manufacturer in the world to commit to selling phones running Microsoft's operating system. Now Microsoft is buying Nokia's mobile phone business. Timothy Clary/AFP/Getty Images hide caption

itoggle caption Timothy Clary/AFP/Getty Images

Nokia President and CEO Stephen Elop introduces the Lumia 900 smartphone during a CES news conference in Las Vegas. Julie Jacobson/AP hide caption

itoggle caption Julie Jacobson/AP