Screen size
Lumia 640 Dual SIM5.0"
Lumia 950Winner: 5.2"+3.8%
Quick verdict
Lumia 950 leads the measured specs 14-1.
Measured wins
Lumia 640 Dual SIM
1
spec wins
Ties
3
equal specs
Lumia 950
14
spec wins
Overall winner
Screen size
Technology
Lumia 640 Dual SIM
GSM / HSPA
Lumia 950
GSM / HSPA / LTE
2G bands
Lumia 640 Dual SIM
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
Lumia 950
GSM 850 / 900 / 1800 / 1900
3G bands
Lumia 640 Dual SIM
HSDPA 850 / 900 / 1900 / 2100
Lumia 950
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
HSPA 42.2/5.76 Mbps, LTE Cat6 300/50 Mbps
4G bands
Lumia 640 Dual SIM
-
Lumia 950
1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 28, 38, 40 - EMEA, 1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 28, 38, 40, 41 - USA
Announced
Lumia 640 Dual SIM
2015, March. Released 2015, April
Lumia 950
2015, October. Released 2015, November
Status
Lumia 640 Dual SIM
Discontinued
Lumia 950
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
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
150 g (5.29 oz)
SIM
Lumia 640 Dual SIM
Dual SIM (Micro-SIM, dual stand-by)
Lumia 950
Nano-SIM
Type
Lumia 640 Dual SIM
IPS LCD
Lumia 950
AMOLED
Size
Lumia 640 Dual SIM
5.0 inches, 68.9 cm2 (~67.6% screen-to-body ratio)
Lumia 950
5.2 inches, 74.8 cm2 (~70.5% screen-to-body ratio)
Resolution
Lumia 640 Dual SIM
720 x 1280 pixels, 16:9 ratio (~294 ppi density)
Lumia 950
1440 x 2560 pixels, 16:9 ratio (~564 ppi density)
Protection
Lumia 640 Dual SIM
Corning Gorilla Glass 3
Lumia 950
Corning Gorilla Glass 3
Other
Lumia 640 Dual SIM
ClearBlack display
Lumia 950
ClearBlack display
OS
Lumia 640 Dual SIM
Microsoft Windows Phone 8.1, upgradable to Microsoft Windows 10
Lumia 950
Microsoft Windows 10
Chipset
Lumia 640 Dual SIM
Qualcomm MSM8926 Snapdragon 400 (28 nm)
Lumia 950
Qualcomm MSM8992 Snapdragon 808 (20 nm)
CPU
Lumia 640 Dual SIM
Quad-core 1.2 GHz Cortex-A7
Lumia 950
Hexa-core (4x1.4 GHz Cortex-A53 & 2x1.8 GHz Cortex-A57)
GPU
Lumia 640 Dual SIM
Adreno 305
Lumia 950
Adreno 418
Card slot
Lumia 640 Dual SIM
microSDXC (dedicated slot)
Lumia 950
microSDXC (dedicated slot)
Internal
Lumia 640 Dual SIM
8GB 1GB RAM
Lumia 950
32GB 3GB RAM
Other
Lumia 640 Dual SIM
eMMC 4.5
Lumia 950
eMMC 5.0
Single
Lumia 640 Dual SIM
8 MP, f/2.2, 28mm (wide), 1/4.0", AF
Lumia 950
20 MP, f/1.9, 26mm (wide), 1/2.4", 1.12µm, AF, OIS
Features
Lumia 640 Dual SIM
LED flash
Lumia 950
Zeiss optics, triple-LED RGB flash, panorama, HDR
Video
Lumia 640 Dual SIM
1080p@30fps
Lumia 950
4K@30fps, stereo sound rec., 1080p@30/60fps (after SW update)
Single
Lumia 640 Dual SIM
1 MP
Lumia 950
5 MP, f/2.4
Video
Lumia 640 Dual SIM
720p
Lumia 950
1080p@30fps
Loudspeaker
Lumia 640 Dual SIM
Yes
Lumia 950
Yes
3.5mm jack
Lumia 640 Dual SIM
Yes
Lumia 950
Yes
WLAN
Lumia 640 Dual SIM
Wi-Fi 802.11 b/g/n, DLNA, hotspot
Lumia 950
Wi-Fi 802.11 a/b/g/n/ac, dual-band, hotspot
Bluetooth
Lumia 640 Dual SIM
4.0, A2DP
Lumia 950
4.1, A2DP
Positioning
Lumia 640 Dual SIM
GPS, GLONASS, BDS
Lumia 950
GPS, GLONASS, BDS
NFC
Lumia 640 Dual SIM
No
Lumia 950
Yes
Radio
Lumia 640 Dual SIM
FM radio
Lumia 950
FM radio
USB
Lumia 640 Dual SIM
microUSB 2.0
Lumia 950
USB Type-C 3.1
Sensors
Lumia 640 Dual SIM
Accelerometer, proximity, compass
Lumia 950
Iris scanner, accelerometer, gyro, proximity, compass, barometer, sensor core
Other
Lumia 640 Dual SIM
-
Lumia 950
Microsoft Continuum support
Type
Lumia 640 Dual SIM
Li-Ion 2500 mAh, removable
Lumia 950
Li-Ion 3000 mAh, removable
Stand-by
Lumia 640 Dual SIM
Up to 840 h (2G) / Up to 840 h (3G)
Lumia 950
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
Up to 23 h (2G) / Up to 18 h (3G)
Charging
Lumia 640 Dual SIM
-
Lumia 950
18W wired Wireless (Qi) (market dependent)
Music play
Lumia 640 Dual SIM
-
Lumia 950
Up to 67 h
Colors
Lumia 640 Dual SIM
Glossy cyan, Orange, White, Matte black
Lumia 950
Black, White
Price
Lumia 640 Dual SIM
About 170 EUR
Lumia 950
About 280 EUR