Screen size
equal specsLumia 640 XL LTE Dual SIM5.7"
Lumia 950 XL5.7"
Quick verdict
Lumia 950 XL leads the measured specs 12-0.
Measured wins
Lumia 640 XL LTE Dual SIM
0
spec wins
Ties
6
equal specs
Lumia 950 XL
12
spec wins
Overall winner
Screen size
equal specsTechnology
Lumia 640 XL LTE Dual SIM
GSM / HSPA / LTE
Lumia 950 XL
GSM / HSPA / LTE
2G bands
Lumia 640 XL LTE Dual SIM
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
Lumia 950 XL
GSM 850 / 900 / 1800 / 1900
3G bands
Lumia 640 XL LTE Dual SIM
HSDPA 850 / 900 / 1700 / 1900 / 2100
Lumia 950 XL
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands
Lumia 640 XL LTE Dual SIM
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
1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 28, 38, 40
Lumia 950 XL
1, 2, 3, 4, 5, 7, 8, 12, 20, 28, 38, 40 - EMEA, 1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 28, 38, 40, 41 - USA
Speed
Lumia 640 XL LTE Dual SIM
HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps
Lumia 950 XL
HSPA 42.2/5.76 Mbps, LTE Cat6 300/50 Mbps
Announced
Lumia 640 XL LTE Dual SIM
2015, March. Released 2015, April
Lumia 950 XL
2015, October. Released 2015, November
Status
Lumia 640 XL LTE Dual SIM
Discontinued
Lumia 950 XL
Discontinued
Dimensions
Lumia 640 XL LTE Dual SIM
157.9 x 81.5 x 9 mm (6.22 x 3.21 x 0.35 in)
Lumia 950 XL
151.9 x 78.4 x 8.1 mm (5.98 x 3.09 x 0.32 in)
Weight
Lumia 640 XL LTE Dual SIM
171 g (6.03 oz)
Lumia 950 XL
165 g (5.82 oz)
SIM
Lumia 640 XL LTE Dual SIM
Dual SIM (Micro-SIM, dual stand-by)
Lumia 950 XL
Nano-SIM
Type
Lumia 640 XL LTE Dual SIM
IPS LCD
Lumia 950 XL
AMOLED
Size
Lumia 640 XL LTE Dual SIM
5.7 inches, 88.9 cm2 (~69.1% screen-to-body ratio)
Lumia 950 XL
5.7 inches, 88.5 cm2 (~74.3% screen-to-body ratio)
Resolution
Lumia 640 XL LTE Dual SIM
720 x 1280 pixels, 16:9 ratio (~259 ppi density)
Lumia 950 XL
1440 x 2560 pixels, 16:9 ratio (~518 ppi density)
Protection
Lumia 640 XL LTE Dual SIM
Corning Gorilla Glass 3
Lumia 950 XL
Corning Gorilla Glass 4
Other
Lumia 640 XL LTE Dual SIM
ClearBlack display
Lumia 950 XL
ClearBlack display
OS
Lumia 640 XL LTE Dual SIM
Microsoft Windows Phone 8.1, upgradable to Microsoft Windows 10
Lumia 950 XL
Microsoft Windows 10
Chipset
Lumia 640 XL LTE Dual SIM
Qualcomm MSM8226 Snapdragon 400 (28 nm)
Lumia 950 XL
Qualcomm MSM8994 Snapdragon 810 (20 nm)
CPU
Lumia 640 XL LTE Dual SIM
Quad-core 1.2 GHz Cortex-A7
Lumia 950 XL
Octa-core (4x1.5 GHz Cortex-A53 & 4x2.0 GHz Cortex-A57)
GPU
Lumia 640 XL LTE Dual SIM
Adreno 305
Lumia 950 XL
Adreno 430
Card slot
Lumia 640 XL LTE Dual SIM
microSDXC (dedicated slot)
Lumia 950 XL
microSDXC (dedicated slot)
Internal
Lumia 640 XL LTE Dual SIM
8GB 1GB RAM
Lumia 950 XL
32GB 3GB RAM
Other
Lumia 640 XL LTE Dual SIM
eMMC 4.5
Lumia 950 XL
eMMC 5.0
Single
Lumia 640 XL LTE Dual SIM
13 MP, f/2.0, 28mm (wide), 1/3.0", AF
Lumia 950 XL
20 MP, f/1.9, 26mm (wide), 1/2.4", 1.12µm, AF, OIS
Features
Lumia 640 XL LTE Dual SIM
Zeiss optics, LED flash
Lumia 950 XL
Zeiss optics, triple-LED RGB flash, panorama, HDR
Video
Lumia 640 XL LTE Dual SIM
1080p@30fps
Lumia 950 XL
4K@30fps, stereo sound rec., 1080p@30/60fps (after SW update)
Single
Lumia 640 XL LTE Dual SIM
5 MP
Lumia 950 XL
5 MP, f/2.4
Video
Lumia 640 XL LTE Dual SIM
1080p@30fps
Lumia 950 XL
1080p@30fps
Loudspeaker
Lumia 640 XL LTE Dual SIM
Yes
Lumia 950 XL
Yes
3.5mm jack
Lumia 640 XL LTE Dual SIM
Yes
Lumia 950 XL
Yes
WLAN
Lumia 640 XL LTE Dual SIM
Wi-Fi 802.11 b/g/n, DLNA, hotspot
Lumia 950 XL
Wi-Fi 802.11 a/b/g/n/ac, dual-band, hotspot
Bluetooth
Lumia 640 XL LTE Dual SIM
4.0, A2DP
Lumia 950 XL
4.1, A2DP
Positioning
Lumia 640 XL LTE Dual SIM
GPS, GLONASS, BDS
Lumia 950 XL
GPS, GLONASS, BDS
NFC
Lumia 640 XL LTE Dual SIM
Yes
Lumia 950 XL
Yes
Radio
Lumia 640 XL LTE Dual SIM
FM radio
Lumia 950 XL
FM radio
USB
Lumia 640 XL LTE Dual SIM
microUSB 2.0
Lumia 950 XL
USB Type-C 3.1
Sensors
Lumia 640 XL LTE Dual SIM
Accelerometer, proximity, compass, sensor core
Lumia 950 XL
Iris scanner, accelerometer, gyro, proximity, compass, barometer, sensor core
Other
Lumia 640 XL LTE Dual SIM
-
Lumia 950 XL
Microsoft Continuum support
Type
Lumia 640 XL LTE Dual SIM
Li-Ion 3000 mAh, removable
Lumia 950 XL
Li-Ion 3340 mAh, removable
Stand-by
Lumia 640 XL LTE Dual SIM
Up to 936 h (2G) / Up to 936 h (3G)
Lumia 950 XL
Up to 288 h (2G) / Up to 288 h (3G)
Talk time
Lumia 640 XL LTE Dual SIM
Up to 31 h 20 min (2G) / Up to 23 h 40 min (3G)
Lumia 950 XL
Up to 25 h (2G) / Up to 19 h (3G)
Charging
Lumia 640 XL LTE Dual SIM
-
Lumia 950 XL
18W wired Wireless (Qi) (market dependent)
Music play
Lumia 640 XL LTE Dual SIM
-
Lumia 950 XL
Up to 75 h
Colors
Lumia 640 XL LTE Dual SIM
Matte cyan, Orange, Black, Matte white, Glossy white
Lumia 950 XL
Black, White
Price
Lumia 640 XL LTE Dual SIM
About 200 EUR
Lumia 950 XL
About 350 EUR