Lumia 920 in all colors other than White has already been sold out at Walmart. But, good news is that even this¬†White Lumia 920 is leading the “Best sellers in AT&T”¬†list at Walmart. Not only this, it is ranked 4 in the “Best selling Cell phones with plans“. Nokia needs to replenish the stock as soon as possible, if they have to make good use of this steep demand for Lumia 920.