Microsoft on Monday launched LUMIA 640 LTE 4G device priced at Rs 17,399 with an aim to widen its portfolio in the mobile devices space under the LUMIA series. The LUMIA smartphone with 4G capability, which comes with 13MP camera, 5.7 inch HD screen and Windows 8.1 operating system, would be available across India, Microsoft Mobile Devices, Director (Sales), South, T S Sridhar said.