Screen size
Lumia 640 Dual SIM5.0"
Lumia 950 Dual SIMWinner: 5.2"+3.8%
Quick verdict
Lumia 950 Dual SIM leads the measured specs 14-1.
Measured wins
Lumia 640 Dual SIM
1
spec wins
Ties
3
equal specs
Lumia 950 Dual SIM
14
spec wins
Overall winner
Screen size
Technology
Lumia 640 Dual SIM
GSM / HSPA
Lumia 950 Dual SIM
GSM / HSPA / LTE
2G bands
Lumia 640 Dual SIM
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
Lumia 950 Dual SIM
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G bands
Lumia 640 Dual SIM
HSDPA 850 / 900 / 1900 / 2100
Lumia 950 Dual SIM
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
Speed
Lumia 640 Dual SIM
HSPA 42.2/5.76 Mbps
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
Storage
Main camera
Front camera
Battery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
USB
5G support
equal specsNFC
3.5mm jack
equal specsSD card
equal specsStereo speakers
Lumia 950 Dual SIM
HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps
4G bands
Lumia 640 Dual SIM
-
Lumia 950 Dual SIM
1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 28, 38, 40
Announced
Lumia 640 Dual SIM
2015, March. Released 2015, April
Lumia 950 Dual SIM
2015, October. Released 2015, December
Status
Lumia 640 Dual SIM
Discontinued
Lumia 950 Dual SIM
Discontinued
Dimensions
Lumia 640 Dual SIM
141.3 x 72.2 x 8.8 mm (5.56 x 2.84 x 0.35 in)
Lumia 950 Dual SIM
145 x 73.2 x 8.2 mm (5.71 x 2.88 x 0.32 in)
Weight
Lumia 640 Dual SIM
145 g (5.11 oz)
Lumia 950 Dual SIM
150 g (5.29 oz)
SIM
Lumia 640 Dual SIM
Dual SIM (Micro-SIM, dual stand-by)
Lumia 950 Dual SIM
Nano-SIM + Nano-SIM
Type
Lumia 640 Dual SIM
IPS LCD
Lumia 950 Dual SIM
AMOLED
Size
Lumia 640 Dual SIM
5.0 inches, 68.9 cm2 (~67.6% screen-to-body ratio)
Lumia 950 Dual SIM
5.2 inches, 74.5 cm2 (~70.2% screen-to-body ratio)
Resolution
Lumia 640 Dual SIM
720 x 1280 pixels, 16:9 ratio (~294 ppi density)
Lumia 950 Dual SIM
1440 x 2560 pixels, 16:9 ratio (~565 ppi density)
Protection
Lumia 640 Dual SIM
Corning Gorilla Glass 3
Lumia 950 Dual SIM
Corning Gorilla Glass 3
Other
Lumia 640 Dual SIM
ClearBlack display
Lumia 950 Dual SIM
ClearBlack display
OS
Lumia 640 Dual SIM
Microsoft Windows Phone 8.1, upgradable to Microsoft Windows 10
Lumia 950 Dual SIM
Microsoft Windows 10
Chipset
Lumia 640 Dual SIM
Qualcomm MSM8926 Snapdragon 400 (28 nm)
Lumia 950 Dual SIM
Qualcomm MSM8992 Snapdragon 808 (20 nm)
CPU
Lumia 640 Dual SIM
Quad-core 1.2 GHz Cortex-A7
Lumia 950 Dual SIM
Hexa-core (4x1.4 GHz Cortex-A53 & 2x1.8 GHz Cortex-A57)
GPU
Lumia 640 Dual SIM
Adreno 305
Lumia 950 Dual SIM
Adreno 418
Card slot
Lumia 640 Dual SIM
microSDXC (dedicated slot)
Lumia 950 Dual SIM
microSDXC (dedicated slot)
Internal
Lumia 640 Dual SIM
8GB 1GB RAM
Lumia 950 Dual SIM
32GB 3GB RAM
Other
Lumia 640 Dual SIM
eMMC 4.5
Lumia 950 Dual SIM
eMMC 5.0
Single
Lumia 640 Dual SIM
8 MP, f/2.2, 28mm (wide), 1/4.0", AF
Lumia 950 Dual SIM
20 MP, f/1.9, 26mm (wide), 1/2.4", 1.12µm, AF, OIS
Features
Lumia 640 Dual SIM
LED flash
Lumia 950 Dual SIM
Zeiss optics, triple-LED RGB flash, panorama, HDR
Video
Lumia 640 Dual SIM
1080p@30fps
Lumia 950 Dual SIM
4K@30fps, stereo sound rec., 1080p@30/60fps (after SW update)
Single
Lumia 640 Dual SIM
1 MP
Lumia 950 Dual SIM
5 MP, f/2.4
Video
Lumia 640 Dual SIM
720p
Lumia 950 Dual SIM
1080p@30fps
Loudspeaker
Lumia 640 Dual SIM
Yes
Lumia 950 Dual SIM
Yes
3.5mm jack
Lumia 640 Dual SIM
Yes
Lumia 950 Dual SIM
Yes
WLAN
Lumia 640 Dual SIM
Wi-Fi 802.11 b/g/n, DLNA, hotspot
Lumia 950 Dual SIM
Wi-Fi 802.11 a/b/g/n/ac, dual-band, hotspot
Bluetooth
Lumia 640 Dual SIM
4.0, A2DP
Lumia 950 Dual SIM
4.1, A2DP
Positioning
Lumia 640 Dual SIM
GPS, GLONASS, BDS
Lumia 950 Dual SIM
GPS, GLONASS, BDS
NFC
Lumia 640 Dual SIM
No
Lumia 950 Dual SIM
Yes
Radio
Lumia 640 Dual SIM
FM radio
Lumia 950 Dual SIM
FM radio
USB
Lumia 640 Dual SIM
microUSB 2.0
Lumia 950 Dual SIM
USB Type-C 3.1
Sensors
Lumia 640 Dual SIM
Accelerometer, proximity, compass
Lumia 950 Dual SIM
Iris scanner, accelerometer, gyro, proximity, compass, barometer, sensor core
Other
Lumia 640 Dual SIM
-
Lumia 950 Dual SIM
Microsoft Continuum support
Type
Lumia 640 Dual SIM
Li-Ion 2500 mAh, removable
Lumia 950 Dual SIM
Li-Ion 3000 mAh, removable
Stand-by
Lumia 640 Dual SIM
Up to 840 h (2G) / Up to 840 h (3G)
Lumia 950 Dual SIM
Up to 288 h (2G) / Up to 288 h (3G)
Talk time
Lumia 640 Dual SIM
Up to 27 h 30 min (2G) / Up to 20 h 30 min (3G)
Lumia 950 Dual SIM
Up to 23 h (2G) / Up to 18 h (3G)
Charging
Lumia 640 Dual SIM
-
Lumia 950 Dual SIM
18W wired Wireless (Qi)
Music play
Lumia 640 Dual SIM
-
Lumia 950 Dual SIM
Up to 67 h
Colors
Lumia 640 Dual SIM
Glossy cyan, Orange, White, Matte black
Lumia 950 Dual SIM
Black, White
Price
Lumia 640 Dual SIM
About 170 EUR
Lumia 950 Dual SIM
About 280 EUR