When well-known entities like Nokia Corporation (ADR) (NYSE: NOK ) and Microsoft Corporation (NASDAQ: MSFT ) hitch their respective wagons together, there's bound to be high expectations. In this instance, with its steadily declining market share, Nokia literally put its corporate life on the line with the introduction of its high-end Lumia 920 running Microsoft's Windows phone OS. Microsoft has a lot of skin in the game, too. Widely criticized for showing up to the mobile computing party late, the success of Nokia Corporation (ADR) (NYSE:NOK)'s Lumia would go a long way toward easing the concerns of Microsoft Corporation (NASDAQ:MSFT) investors. Now, with plans to introduce a Lumia in the $150 range, sans a subsidy mind you, Nokia and Microsoft just took a major step in the right direction. Nokia's market share decline It's no surprise that Samsung continues to lead the global mobile phone sales race, as it did, again, during the first quarter of this year.