The Microsoft Lumia 640 and Microsoft Lumia 640 XL are Windows Phone smartphones developed by Microsoft Mobile. Both phones were announced on March 2, 2015, and are the successors to the Nokia Lumia 630 series and the Lumia 1320, respectively. The phones are primarily aimed at developing markets, although they are also available in developed markets as lower-cost options compared to other phones in their classes. The two devices became available in the US and most other markets in June 2015. On February 15, 2016, Microsoft announced the Lumia 650, the Lumia 640 successor, with improvements like device encryption, an AMOLED display, and 16 GB of flash storage. On October 18, 2017, Microsoft confirmed that the phone will not receive more major Windows updates, but it will still get security updates and cumulative updates until the Windows 10 support lifecycle runs out.
Release and availability
The Lumia 640 and 640 XL were unveiled at Microsoft's event at the Mobile World Congress in Barcelona, Spain on March 2, 2015. The Lumia 640 LTE has U.S. pricing beginning at US$ 179.99, while the Lumia 640 XL LTE is priced at US$ 249.99. Both phones are available as Dual-SIM and LTE worldwide from April 2015. In certain countries, there is promotion which includes a 16GB or 32GB SD Memory Card for purchasing Lumia 640 and 640 XL.
Hardware
Despite similar names and model codes, the Microsoft Lumia 640 and Microsoft Lumia 640 XL are distinct devices in both form and function. The Lumia 640 comes with a 5-inch HDIPSLCD display with Corning Gorilla Glass 3 protection and oleophobic coating. It is powered by a 1.2 GHz quad-core Qualcomm Snapdragon 400 processor, 1 GB RAM and 8 GB internal storage with up to 128GB expandable storage via microSD cards. It has a 2500mAh Li-Ion battery, 8 megapixel rear camera with LED flash, and 0.9 megapixel wide-angle front-facing camera. It is available in glossy cyan, orange, and white, along with matte-texture black. The Microsoft Lumia 640 XL is the larger, "phablet"-type version of the Lumia 640, with a 5.7 inch HD IPS LCD display. The 640 XL is equipped with the same basic hardware and network connectivity specifications as the Lumia 640, but features a Zeiss-engineered 13MP rear camera with LED flash, as well as a 5MP wide-angle front-facing camera. It has a 3000mAh Li-Ion battery and is available in matte-texture cyan, orange, and black, along with glossy & matte-texture white.
Software
The Lumia 640 and Lumia 640 XL shipped with Windows Phone 8.1 Update 2, and both phones are upgradable to Windows 10 Mobile. Initially in the United States, the Lumia 640 and 640 XL were offered with a free one-year subscription to Microsoft Office 365.
