We know that the Lumia 900, Nokia’s grand entry to the US market is on back-order at AT&T Store and at Amazon Store. The flagship Nokia Windows Phone went on pre-order on 30th March and will be available April 8. If pre-orders are any indications then Lumia 900 is going to be really successful.

And now the Lumia 900 is on top of the Best-Selling AT&T phone list. The two top spots on the list are now taken by the Lumia 900 with the Black one at the top followed by the Cyan one. The impressive thing is that it has just been three days of pre-order and the two Lumia 900’s also make their way into Amazon’s list of best-selling cell phones with service plans at five and seven, we won’t really be surprised if the phone makes it to the top of the list. This is some great news for Microsoft and Nokia