Screen size
Lumia 5504.7"
Lumia 640 LTE Dual SIMWinner: 5.0"+6%
Quick verdict
Lumia 640 LTE Dual SIM leads the measured specs 7-3.
Measured wins
Lumia 550
3
spec wins
Ties
7
equal specs
Lumia 640 LTE Dual SIM
7
spec wins
Overall winner
Screen size
Technology
Lumia 550
GSM / HSPA / LTE
Lumia 640 LTE Dual SIM
GSM / HSPA / LTE
2G bands
Lumia 550
GSM 850 / 900 / 1800 / 1900
Lumia 640 LTE Dual SIM
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G bands
Lumia 550
HSDPA 850 / 900 / 2100
Lumia 640 LTE Dual SIM
HSDPA 850 / 900 / 1700 / 1900 / 2100
4G bands
Lumia 550
1, 3, 7, 8, 20
Resolution
equal specsRefresh rate
Peak brightness
Pixel density
CPU speed
RAM
equal specsStorage
equal specsMain camera
Front camera
Battery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
USB
equal specs5G support
equal specsNFC
3.5mm jack
equal specsSD card
equal specsStereo speakers
Lumia 640 LTE Dual SIM
1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 28, 38, 40
Speed
Lumia 550
HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps
Lumia 640 LTE Dual SIM
HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps
Announced
Lumia 550
2015, October. Released 2015, December
Lumia 640 LTE Dual SIM
2015, March. Released 2015, April
Status
Lumia 550
Discontinued
Lumia 640 LTE Dual SIM
Discontinued
Dimensions
Lumia 550
136.1 x 67.8 x 9.9 mm (5.36 x 2.67 x 0.39 in)
Lumia 640 LTE Dual SIM
141.3 x 72.2 x 8.8 mm (5.56 x 2.84 x 0.35 in)
Weight
Lumia 550
141.9 (5.01 oz)
Lumia 640 LTE Dual SIM
145 g (5.11 oz)
SIM
Lumia 550
Nano-SIM
Lumia 640 LTE Dual SIM
Dual SIM (Micro-SIM, dual stand-by)
Type
Lumia 550
IPS LCD,
Lumia 640 LTE Dual SIM
IPS LCD
Size
Lumia 550
4.7 inches, 59.7 cm2 (~64.7% screen-to-body ratio)
Lumia 640 LTE Dual SIM
5.0 inches, 68.9 cm2 (~67.6% screen-to-body ratio)
Resolution
Lumia 550
720 x 1280 pixels, 16:9 ratio (~315 ppi density)
Lumia 640 LTE Dual SIM
720 x 1280 pixels, 16:9 ratio (~294 ppi density)
Protection
Lumia 550
-
Lumia 640 LTE Dual SIM
Corning Gorilla Glass 3
Other
Lumia 550
-
Lumia 640 LTE Dual SIM
ClearBlack display
OS
Lumia 550
Microsoft Windows 10
Lumia 640 LTE Dual SIM
Microsoft Windows Phone 8.1, upgradable to Microsoft Windows 10
Chipset
Lumia 550
Qualcomm MSM8909 Snapdragon 210 (28 nm)
Lumia 640 LTE Dual SIM
Qualcomm MSM8926 Snapdragon 400 (28 nm)
CPU
Lumia 550
Quad-core 1.1 GHz Cortex-A7
Lumia 640 LTE Dual SIM
Quad-core 1.2 GHz Cortex-A7
GPU
Lumia 550
Adreno 304
Lumia 640 LTE Dual SIM
Adreno 305
Card slot
Lumia 550
microSDXC (dedicated slot)
Lumia 640 LTE Dual SIM
microSDXC (dedicated slot)
Internal
Lumia 550
8GB 1GB RAM
Lumia 640 LTE Dual SIM
8GB 1GB RAM
Other
Lumia 550
eMMC 4.5
Lumia 640 LTE Dual SIM
eMMC 4.5
Single
Lumia 550
5 MP, f/2.4, 1/4.0", AF
Lumia 640 LTE Dual SIM
8 MP, f/2.2, 28mm (wide), 1/4.0", AF
Features
Lumia 550
LED flash
Lumia 640 LTE Dual SIM
LED flash
Video
Lumia 550
720p@30fps
Lumia 640 LTE Dual SIM
1080p@30fps
Single
Lumia 550
2 MP, f/2.8
Lumia 640 LTE Dual SIM
1 MP
Video
Lumia 550
480p
Lumia 640 LTE Dual SIM
720p
Loudspeaker
Lumia 550
Yes
Lumia 640 LTE Dual SIM
Yes
3.5mm jack
Lumia 550
Yes
Lumia 640 LTE Dual SIM
Yes
WLAN
Lumia 550
Wi-Fi 802.11 b/g/n, hotspot
Lumia 640 LTE Dual SIM
Wi-Fi 802.11 b/g/n, DLNA, hotspot
Bluetooth
Lumia 550
4.1, A2DP
Lumia 640 LTE Dual SIM
4.0, A2DP
Positioning
Lumia 550
GPS, GLONASS, BDS
Lumia 640 LTE Dual SIM
GPS, GLONASS, BDS
NFC
Lumia 550
No
Lumia 640 LTE Dual SIM
Yes
Radio
Lumia 550
FM radio
Lumia 640 LTE Dual SIM
FM radio
USB
Lumia 550
microUSB 2.0
Lumia 640 LTE Dual SIM
microUSB 2.0
Sensors
Lumia 550
Accelerometer, proximity
Lumia 640 LTE Dual SIM
Accelerometer, proximity, compass
Type
Lumia 550
Li-Ion 2100 mAh, removable
Lumia 640 LTE Dual SIM
Li-Ion 2500 mAh, removable
Stand-by
Lumia 550
Up to 672 h (2G) / Up to 672 h (3G)
Lumia 640 LTE Dual SIM
Up to 864 h (2G) / Up to 864 h (3G)
Talk time
Lumia 550
Up to 16 h (2G) / Up to 14 h (3G)
Lumia 640 LTE Dual SIM
Up to 26 h 30 min (2G) / Up to 17 h 30 min (3G)
Music play
Lumia 550
Up to 60 h
Lumia 640 LTE Dual SIM
-
Colors
Lumia 550
Black, White
Lumia 640 LTE Dual SIM
Glossy cyan, Orange, White, Matte black
Price
Lumia 550
About 90 EUR
Lumia 640 LTE Dual SIM
About 150 EUR