That was really fast !! Lumia 520 went on pre-order just one day back at India’s no.1 online retailer Flipkart. Check now and it has climbed to the top of Flipkart’s Best Seller phone list. With Lumia 920 and Lumia 620 already doing really well at Flipkart, it was expected, but great to see it selling so well on pre-order itself !! Click on the link below for seeing the Flipkart’s best sellers list.