Nokia is the world's largest manufacturer of mobile phones with 132,000 employees in over 120 countries. In 2010, Nokia had global annual revenue of over €42 billion and operating profit of €2 billion. Nokia held 23% of the global device market share in 2011, placing it third in the global smartphone market behind Samsung and Apple. In 2011, Nokia announced a partnership with Microsoft where all future Nokia smartphones will run on the Windows Phone 7 platform. This led to an 11% decline in Nokia's stock price and a 40% drop in profits, turning to an operating loss in Q2 2011. Nokia unveiled its first Windows Phone 7.5 devices, Lumia 710 and 800, in October 2011.