We've often commented on how Nokia has really been sizzling hot in the lower end of the smartphone market; no surprise then, that the Nokia Lumia 520 is the highest selling Windows device on the planet. That includes other Windows Phone flavored handsets, Windows powered PCs and tablets. Microsoft itself has realized how important the Nokia Lumia 520 has become...Source: http://www.phonearena.com/news/Nokia-Lumia-520-is-the-top-selling-Windows-device-in-the-world_id47809
