1Display
The Microsoft Lumia 640 features a 5 inch IPS display with a Resolution of 720 x 1280 pixels, Corning Gorilla Glass 3, and sunlight readability enhancements.
2Dimensions and Weight
The Microsoft Lumia 640 measures 141.3 x 72.2 x 8.85 mm and tips the scales at 145 grams.
3Processor
The Microsoft Lumia 640 has the Snapdragon 400 Chipset that comprises of a quad-core 1.2 GHz Cortex-A7 processing unit and Adreno 305 graphics processor.
4Memory
The Microsoft Lumia 640 has 1 GB of RAM and 8 GB of internal storage. An additional 128 GB can be added with a micro SD card.
5Operating System
Naturally, the Microsoft Lumia 640 features Windows. It runs on Windows 8.1 with Lumia Denim but will be upgraded to Windows 10 later.
6Variants
The Lumia 640 has been announced in single SIM 3G, single SIM 4G, Dual-SIM 3G, and dual-SIM 4G variants. Also, you can have each of these in white, black, orange, or blue colours.
7Connectivity
For connectivity, the Microsoft Lumia 640 has WiFi, WiFi Hotspot, DLNA, Bluetooth 4.0, GPS (with GLONASS), radio, microUSB, and NFC.
8Camera
The Microsoft Lumia 640 has an 8 Megapixel primary camera with auto-focus, flash, 28 mm sensor, an Aperture of f/2.2, and video recording at 1080p at 30 fps. In the front it has a 1 megapixel camera which can record videos at 720p.
9Battery
The Microsoft Lumia 640 at a 2500 mAh battery pack, which can provide up to 864 hours of standby or 17.5 hours of Talk time on 3G.
10Additional Features
Active noise cancellation, document viewer, photo/video editor, and 30 GB of OneDrive storage.