Redmi Note 8 (4GB RAM, 64GB) vs Microsoft Lumia 640 Dual SIM comparison

Compare Redmi Note 8 (4GB RAM, 64GB)
Compare Microsoft Lumia 640 Dual SIM
ratings
Overall NDTV RatingRead Review-
Design Rating-
Display Rating-
Software Rating-
Performance Rating-
Battery Life Rating-
Camera Rating-
Value for Money Rating-
key specs
Display6.30-inch5.00-inch
ProcessorQualcomm Snapdragon 665Qualcomm Snapdragon 400
Front Camera13-megapixel 0.9-megapixel
Rear Camera48-megapixel + 8-megapixel + 2-megapixel + 2-megapixel 8-megapixel
RAM4GB1GB
Storage64GB8GB
Battery Capacity4000mAh2500mAh
OSAndroid 9 PieWindows Phone 8.1
Resolution1080x2280 pixels720x1280 pixels
general
BrandXiaomiMicrosoft
ModelRedmi Note 8Lumia 640 Dual SIM
Release date29th August 2019February 2015
Launched in IndiaYes-
Form factorTouchscreenTouchscreen
Body typeGlass-
Dimensions (mm)158.30 x 75.30 x 8.35141.30 x 72.20 x 8.80
Weight (g)188.00145.00
Battery capacity (mAh)40002500
Removable batteryNoYes
Fast chargingProprietary-
ColoursCosmic Purple, Emerald Green, Moonlight White, Neptune Blue, Ruby Red, Sapphire Blue, Space Black, White-
display
Screen size (inches)6.305.00
TouchscreenYesYes
Resolution1080x2280 pixels720x1280 pixels
Protection typeGorilla Glass-
Aspect ratio19.5:9-
Pixels per inch (PPI)-294
hardware
Processorocta-core1.2GHz quad-core
Processor makeQualcomm Snapdragon 665Qualcomm Snapdragon 400
RAM4GB1GB
Internal storage64GB8GB
Expandable storageYesYes
Expandable storage typemicroSDmicroSD
Expandable storage up to (GB)512128
Dedicated microSD slotYes-
camera
Rear camera48-megapixel (f/1.79) + 8-megapixel (f/2.2) + 2-megapixel (f/2.4) + 2-megapixel (f/2.4)8-megapixel
Rear autofocusYes-
Rear flashYesLED
Front camera13-megapixel (f/2.0)0.9-megapixel
software
Operating systemAndroid 9 PieWindows Phone 8.1
SkinMIUI 10-
connectivity
Wi-FiYesYes
Wi-Fi standards supported802.11 a/b/g/n/ac802.11 b/g/n
GPSYesYes
BluetoothYesYes
USB Type-CYes-
Headphones3.5mm3.5mm
Number of SIMs22
Active 4G on both SIM cardsYes-
NFC-No
Infrared-No
USB OTG-No
FM-Yes
Wi-Fi Direct-No
Mobile High-Definition Link (MHL)-No
sim 1
SIM TypeNano-SIMMicro-SIM
GSM/CDMAGSMGSM
3GYesYes
4G/ LTEYesNo
sim 2
SIM TypeNano-SIMMicro-SIM
GSM/CDMAGSMGSM
3GYesYes
4G/ LTEYesNo
sensors
Face unlockYes-
Fingerprint sensorYes-
Compass/ MagnetometerYesYes
Proximity sensorYesYes
AccelerometerYesYes
Ambient light sensorYesYes
GyroscopeYesNo
Barometer-No
Temperature sensor-No

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