Microsoft's latest Windows handset for AT&T is the powerful 640 XL, a massive device best suited to phablet lovers. It features a 5.7-inch screen, 13-megapixel camera, quad-core processor, and an ...
Microsoft debuted another pair of mid-range handsets in the long buildup to Windows 10. The Lumia 640 and 640 XL are worthy update to the 635 and 1320, but they leaving us aching for a new flagship ...
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