Today we are going to review the two most popular Smartphone Device Maker companies who are soon going to launch their first Mobile Operating System of Microsoft Windows Phone 7.5 Mango. The first company is Nokia and the other one is Samsung, they both are in partnership with Microsoft to build Windows Phone 7.5 Mango device. The first Nokia's Windows Phone device is known as Nokia Lumia 800 Smartphone powered by Windows Phone 7.5 Mango on the other side the first Samsung's Windows Phone device is known as Samsung Focus S I937 Smartphone powered by Windows Phone 7.5 Mango.


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