Microsoft Lumia 640 Dual SIM Windows Mobile smartphone. Announced Mar 2015. Features 5.0″ display, Snapdragon 400 chipset, 8 MP primary camera, 1 MP front camera, 2500 mAh battery, 8 GB storage, 1000 MB RAM, Corning Gorilla Glass 3.
Microsoft Windows Phone 8.1, upgradable to Microsoft Windows 10
Chipset
Qualcomm MSM8926 Snapdragon 400 (28 nm)
CPU
Quad-core 1.2 GHz Cortex-A7
GPU
Adreno 305
Memory
Card slot
microSDXC (dedicated slot)
Internal
8GB 1GB RAM
eMMC 4.5
Main Camera
Single
8 MP, f/2.2, 28mm (wide), 1/4.0", AF
Features
LED flash
Video
1080p@30fps
Selfie camera
Single
1 MP
Video
720p
Sound
Loudspeaker
Yes
3.5mm jack
Yes
Comms
WLAN
Wi-Fi 802.11 b/g/n, DLNA, hotspot
Bluetooth
4.0, A2DP
GPS
Yes, with A-GPS, GLONASS, BDS
NFC
No
Radio
FM radio
USB
microUSB 2.0
Features
Sensors
Accelerometer, proximity, compass
Battery
Type
Li-Ion 2500 mAh, removable
Stand-by
Up to 840 h (2G) / Up to 840 h (3G)
Talk time
Up to 27 h 30 min (2G) / Up to 20 h 30 min (3G)
Misc
Colors
Glossy cyan, Orange, White, Matte black
Price
About 170 EUR
Tests
Display
Contrast ratio: 1034 (nominal), 2.563 (sunlight)
Loudspeaker
Voice 70dB / Noise 65dB / Ring 75dB
Audio quality
Noise -93.1dB / Crosstalk -93.2dB
Battery life
Endurance rating 76h
0
Information on technical characteristics, the delivery set, the country of manufacture and the appearance
of the goods is for reference only and is based on the latest information available at the time of publication.