The AT&T Lumia 640 XL is once again sold out in the Microsoft Store December 7, 2016 by admin Tweet After briefly having both the unlocked and AT&T models of the Lumia 640 XL back in stock, Microsoft is once again out of stock on all models of the plus-sized mid-range device. Read more… Neowin Related Posts:Microsoft announces the Lumia 535 and 535 Dual SimMicrosoft releases Phi-3.5 family of models that…Microsoft's stock price at a 52 week high while…A quick look back at the reveal of the Nokia Lumia…Windows 11 on Microsoft Lumia may soon only be a…