Microsoft Lumia 640

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 series and the, 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 Microsoft Lumia 650, the successor to the Lumia 640, with improvements like device encryption, an 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 in,  on March 2, 2015. The Lumia 640 LTE has U.S. pricing beginning at US$ 179.99, while the Lumia 640 XL LTE (exclusive to in the country) 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.

Australian carriers

 * (Lumia 640 and 640 XL)

U.S. carriers

 * (Lumia 640 and 640 XL)
 * (Lumia 640 only)
 * (Lumia 640 only)
 * (Lumia 640 only)

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   display with   protection and  (fingerprint-resistant) coating. It is powered by a 1.2 GHz quad-core Snapdragon 400 processor, 1 GB RAM and 8 GB (only 3 GB available) internal storage with up to 128GB expandable storage via  cards. It has a 2500  battery, 8 MP rear camera with LED flash, and 0.9 MP 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, ""-type version of the Lumia 640, with a 5.7-inch   display. The 640 XL is equipped with the same basic hardware and network connectivity specifications as the Lumia 640, but features a -engineered 13 MP (1/3.0″ sensor) rear camera with LED flash, as well as a 5MP wide-angle front-facing camera. It has a 3000  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 (through the Lumia Denim software package), 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.