Microsoft and Nokia, two companies that have not gotten much traction in the smartphone market lately, are hoping for another chance. The companies on Wednesday unveiled a Lumia smartphone that includes the Windows Phone operating system — new models of products that have not sold well.
At a news conference in New York, Nokia and Microsoft showed the Lumia 920, a smartphone that includes Nokia’s PureView camera technology and a wireless battery-charging capability. It also briefly introduced the Lumia 820, a mid-priced smartphone with exchangeable covers. The smartphones run Windows Phone 8, the latest version of Microsoft’s mobile software...