Comeback Attempt; As Nokia unveils new Microsoft-powered Lumias phone

Nokia Oyj unveiled two smartphones using Microsoft Corp.’s new Windows Phone software, betting on the devices to win back sales lost to the iPhone and Android handset makers.
The Lumia 920 has a 4.5-inch (11-cm) screen and an 8.7- megapixel camera with a so-called floating lens that uses software for image stabilization, Nokia Chief Executive Officer Stephen Elop said today at a news conference in New York. The Lumia 820, whose screen measures 4.3 inches, has an 8-
megapixel camera without the optics software. Both will go on sale in the fourth quarter of this year.
Nokia is counting on its partnership with Redmond, Washington-based Microsoft to help boost sales and return the company to profitability after falling behind its rivals. The Espoo, Finland-based phonemaker has identified the U.S. as a market where it has to win back users and gain momentum in its attempted global comeback bid.
The announcement of the Lumia models gives Nokia a brief head start before two top rivals present their own newest handsets. Motorola Mobility, a unit of Google Inc., is planning to unveil one of the first full-screen phones in the U.S. later in New York,
according to a person familiar with the plan. Apple Inc., maker of the iPhone, is planning its own introduction on Sept. 12.