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Microsoft Lumia 550 vs Microsoft Lumia 640 vs Nokia Lumia 635 comparison

 Compare Microsoft Lumia 550
Microsoft Lumia 550
Compare Microsoft Lumia 640
Microsoft Lumia 640
Compare Nokia Lumia 635
Nokia Lumia 635
key specs
Display4.70-inch5.00-inch4.50-inch
ProcessorQualcomm Snapdragon 210Qualcomm Snapdragon 400Qualcomm Snapdragon 400
Front Camera2-megapixel0.9-megapixelNo
Rear Camera5-megapixel8-megapixel5-megapixel
RAM1GB1GB512MB
Storage8GB8GB8GB
Battery Capacity2100mAh2500mAh1830mAh
OSWindows 10 MobileWindows Phone 8.1Windows Phone 8.1
Resolution720x1280 pixels720x1280 pixels480x854 pixels
general
BrandMicrosoftMicrosoftNokia
ModelLumia 550Lumia 640Lumia 635
Release dateOctober 1, 2015February 1, 2015May 1, 2014
Form factorTouchscreenTouchscreenTouchscreen
Dimensions (mm)136.10 x 67.80 x 9.90141.30 x 72.20 x 8.80129.50 x 66.70 x 9.20
Battery capacity (mAh)210025001830
Removable batteryYesYesYes
ColoursWhite, Black-Bright Green, Bright Orange, Black, White
Weight (g)-145.00134.00
display
Screen size (inches)4.705.004.50
TouchscreenYesYesYes
Resolution720x1280 pixels720x1280 pixels480x854 pixels
Pixels per inch (PPI)315294221
hardware
Processor1.1GHz quad-core1.2GHz quad-core1.2GHz quad-core
Processor makeQualcomm Snapdragon 210Qualcomm Snapdragon 400Qualcomm Snapdragon 400
RAM1GB1GB512MB
Internal storage8GB8GB8GB
Expandable storageYesYesYes
Expandable storage typemicroSDmicroSDmicroSD
Expandable storage up to (GB)200128128
camera
Rear camera5-megapixel8-megapixel5-megapixel
Rear flashLEDLEDNo
Front camera2-megapixel0.9-megapixelNo
software
Operating systemWindows 10 MobileWindows Phone 8.1Windows Phone 8.1
connectivity
Wi-FiYesYesYes
Wi-Fi standards supported802.11 b/g/n802.11 b/g/n802.11 b/g/n
GPSYesYesYes
BluetoothYes, v 4.10YesYes, v 4.00
NFCNoNoNo
InfraredNoNoNo
USB OTGNoNoNo
Headphones3.5mm3.5mm3.5mm
FMYesNoYes
Number of SIMs111
Wi-Fi DirectYesNoNo
Mobile High-Definition Link (MHL)NoNoNo
sim 1
SIM TypeNano-SIMMicro-SIMMicro-SIM
GSM/CDMAGSMGSMGSM
3GYesYesYes
4G/ LTEYesNoYes
sensors
Compass/ MagnetometerNoYesNo
Proximity sensorYesYesYes
AccelerometerYesYesYes
Ambient light sensorYesYesYes
GyroscopeNoNoYes
BarometerNoNoNo
Temperature sensorNoNoNo
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