Screen size
equal specsLumia 640 XL LTE5.7"
Lumia 950 XL Dual SIM5.7"
Quick verdict
Lumia 950 XL Dual SIM leads the measured specs 12-0.
Measured wins
Lumia 640 XL LTE
0
spec wins
Ties
6
equal specs
Lumia 950 XL Dual SIM
12
spec wins
Overall winner
Screen size
equal specsTechnology
Lumia 640 XL LTE
GSM / HSPA / LTE
Lumia 950 XL Dual SIM
GSM / HSPA / LTE
2G bands
Lumia 640 XL LTE
GSM 850 / 900 / 1800 / 1900
Lumia 950 XL Dual SIM
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G bands
Lumia 640 XL LTE
HSDPA 850 / 900 / 2100
Lumia 950 XL Dual SIM
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands
Lumia 640 XL LTE
1, 3, 7, 8, 20
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
Storage
Main camera
Front camera
equal specsBattery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
USB
5G support
equal specsNFC
equal specs3.5mm jack
equal specsSD card
equal specsStereo speakers
Lumia 950 XL Dual SIM
1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 28, 38, 40
Speed
Lumia 640 XL LTE
HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps
Lumia 950 XL Dual SIM
HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps
Announced
Lumia 640 XL LTE
2015, March. Released 2015, April
Lumia 950 XL Dual SIM
2015, October. Released 2015, December
Status
Lumia 640 XL LTE
Discontinued
Lumia 950 XL Dual SIM
Discontinued
Dimensions
Lumia 640 XL LTE
157.9 x 81.5 x 9 mm (6.22 x 3.21 x 0.35 in)
Lumia 950 XL Dual SIM
151.9 x 78.4 x 8.1 mm (5.98 x 3.09 x 0.32 in)
Weight
Lumia 640 XL LTE
171 g (6.03 oz)
Lumia 950 XL Dual SIM
165 g (5.82 oz)
SIM
Lumia 640 XL LTE
Micro-SIM
Lumia 950 XL Dual SIM
Nano-SIM + Nano-SIM
Type
Lumia 640 XL LTE
IPS LCD
Lumia 950 XL Dual SIM
AMOLED
Size
Lumia 640 XL LTE
5.7 inches, 88.9 cm2 (~69.1% screen-to-body ratio)
Lumia 950 XL Dual SIM
5.7 inches, 89.6 cm2 (~75.2% screen-to-body ratio)
Resolution
Lumia 640 XL LTE
720 x 1280 pixels, 16:9 ratio (~259 ppi density)
Lumia 950 XL Dual SIM
1440 x 2560 pixels, 16:9 ratio (~515 ppi density)
Protection
Lumia 640 XL LTE
Corning Gorilla Glass 3
Lumia 950 XL Dual SIM
Corning Gorilla Glass 4
Other
Lumia 640 XL LTE
ClearBlack display
Lumia 950 XL Dual SIM
ClearBlack display
OS
Lumia 640 XL LTE
Microsoft Windows Phone 8.1, upgradable to Microsoft Windows 10
Lumia 950 XL Dual SIM
Microsoft Windows 10
Chipset
Lumia 640 XL LTE
Qualcomm MSM8226 Snapdragon 400 (28 nm)
Lumia 950 XL Dual SIM
Qualcomm MSM8994 Snapdragon 810 (20 nm)
CPU
Lumia 640 XL LTE
Quad-core 1.2 GHz Cortex-A7
Lumia 950 XL Dual SIM
Octa-core (4x1.5 GHz Cortex-A53 & 4x2.0 GHz Cortex-A57)
GPU
Lumia 640 XL LTE
Adreno 305
Lumia 950 XL Dual SIM
Adreno 430
Card slot
Lumia 640 XL LTE
microSDXC (dedicated slot)
Lumia 950 XL Dual SIM
microSDXC (dedicated slot)
Internal
Lumia 640 XL LTE
8GB 1GB RAM
Lumia 950 XL Dual SIM
32GB 3GB RAM
Other
Lumia 640 XL LTE
eMMC 4.5
Lumia 950 XL Dual SIM
eMMC 5.0
Single
Lumia 640 XL LTE
13 MP, f/2.0, 28mm (wide), 1/3.0", AF
Lumia 950 XL Dual SIM
20 MP, f/1.9, 26mm (wide), 1/2.4", 1.12µm, AF, OIS
Features
Lumia 640 XL LTE
Zeiss optics, LED flash
Lumia 950 XL Dual SIM
Zeiss optics, triple-LED RGB flash, panorama, HDR
Video
Lumia 640 XL LTE
1080p@30fps
Lumia 950 XL Dual SIM
4K@30fps, stereo sound rec., 1080p@30/60fps (after SW update)
Single
Lumia 640 XL LTE
5 MP
Lumia 950 XL Dual SIM
5 MP, f/2.4
Video
Lumia 640 XL LTE
1080p@30fps
Lumia 950 XL Dual SIM
1080p@30fps
Loudspeaker
Lumia 640 XL LTE
Yes
Lumia 950 XL Dual SIM
Yes
3.5mm jack
Lumia 640 XL LTE
Yes
Lumia 950 XL Dual SIM
Yes
WLAN
Lumia 640 XL LTE
Wi-Fi 802.11 b/g/n, DLNA, hotspot
Lumia 950 XL Dual SIM
Wi-Fi 802.11 a/b/g/n/ac, dual-band, hotspot
Bluetooth
Lumia 640 XL LTE
4.0, A2DP
Lumia 950 XL Dual SIM
4.1, A2DP
Positioning
Lumia 640 XL LTE
GPS, GLONASS, BDS
Lumia 950 XL Dual SIM
GPS, GLONASS, BDS
NFC
Lumia 640 XL LTE
Yes
Lumia 950 XL Dual SIM
Yes
Radio
Lumia 640 XL LTE
FM radio
Lumia 950 XL Dual SIM
FM radio
USB
Lumia 640 XL LTE
microUSB 2.0
Lumia 950 XL Dual SIM
USB Type-C 3.1
Sensors
Lumia 640 XL LTE
Accelerometer, proximity, compass, sensor core
Lumia 950 XL Dual SIM
Iris scanner, accelerometer, gyro, proximity, compass, barometer, sensor core
Other
Lumia 640 XL LTE
-
Lumia 950 XL Dual SIM
Microsoft Continuum support
Type
Lumia 640 XL LTE
Li-Ion 3000 mAh, removable
Lumia 950 XL Dual SIM
Li-Ion 3340 mAh, removable
Stand-by
Lumia 640 XL LTE
Up to 888 h (2G) / Up to 888 h (3G)
Lumia 950 XL Dual SIM
Up to 288 h (2G) / Up to 288 h (3G)
Talk time
Lumia 640 XL LTE
Up to 30 h 20 min (2G) / Up to 24 h (3G)
Lumia 950 XL Dual SIM
Up to 25 h (2G) / Up to 19 h (3G)
Charging
Lumia 640 XL LTE
-
Lumia 950 XL Dual SIM
18W wired Wireless (Qi) (market dependent)
Music play
Lumia 640 XL LTE
-
Lumia 950 XL Dual SIM
Up to 75 h
Colors
Lumia 640 XL LTE
Matte cyan, Orange, Black, Matte white, Glossy white
Lumia 950 XL Dual SIM
Black, White
Price
Lumia 640 XL LTE
About 200 EUR
Lumia 950 XL Dual SIM
About 350 EUR