The Microsoft Lumia 640 features a 5-inch HD display, comes in a range of vivid colors, and runs on Windows Phone 8.1 (it's set to get upgraded to Windows 10 in the not too distant future). The Lumia 640 has all the options you'd expect from an affordable phone: more specifically, it arrives in a single- and dual-SIM versions with both a 3G model and 4G LTE version of the handset, including a dual-SIM LTE device. The handset comes in a range of colors including cyan, orange, black and white. It's also got an 8-megapixel camera with dynamic flash and auto HDR, as well as a front-facing camera with wide-angle lens. It is pre-loaded with the latest Lumia camera app update.
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