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Price and specifications of Microsoft Lumia 640 LTE Dual SIM advantages, disadvantages, and a comprehensive explanation

Release Date
2015, April
Camera
8MP
Battery
2500mAh
Processor
Snapdragon 400
Screen
5.0"
Storage
8GB , microSDXC
Ram
1GB RAM
Operating System
Microsoft Windows Phone 8.1
Network
Technology GSM / HSPA / LTE
2G bands GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G bands HSDPA 850 / 900 / 1700 / 1900 / 2100
4G bands 1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 28, 38, 40
Speed HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps
Launch
Announced 2015, March. Released 2015, April
Status Discontinued
Body
Dimensions 141.3 x 72.2 x 8.8 mm (5.56 x 2.84 x 0.35 in)
Weight 145 g (5.11 oz)
SIM Dual SIM (Micro-SIM, dual stand-by)
Display
Type IPS LCD
Size 5.0 inches, 68.9 cm2 (~67.6% screen-to-body ratio)
Resolution 720 x 1280 pixels, 16:9 ratio (~294 ppi density)
Protection Corning Gorilla Glass 3
Platform
OS 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
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
Positioning GPS, GLONASS, BDS
NFC Yes
Radio FM radio
USB microUSB 2.0
Features
Sensors Accelerometer, proximity, compass
Battery
Type Li-Ion 2500 mAh, removable
Stand-by Up to 864 h (2G) / Up to 864 h (3G)
Talk time Up to 26 h 30 min (2G) / Up to 17 h 30 min (3G)
Misc
Colors Glossy cyan, Orange, White, Matte black
Price About 150 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 (old) Endurance rating 76h

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