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Redmi K40 vs Xiaomi Redmi Note 9 4G comparison

 Compare Redmi K40
Redmi K40
Compare Xiaomi Redmi Note 9 4G
Xiaomi Redmi Note 9 4G
key specs
Display6.67-inch6.53-inch
ProcessorQualcomm Snapdragon 870-
Front Camera20-megapixel8-megapixel
Rear Camera48-megapixel + 8-megapixel + 5-megapixel48-megapixel + 8-megapixel + 2-megapixel
RAM6GB, 8GB, 12GB4GB
Storage128GB, 256GB128GB
Battery Capacity4520mAh6000mAh
OSAndroid 11Android 10
Resolution1080x2400 pixels1080x2340 pixels
general
BrandXiaomiXiaomi
ModelRedmi K40Redmi Note 9 4G
Release dateFebruary 25, 2021November 26, 2020
Launched in IndiaNoNo
Form factorTouchscreenTouchscreen
Dimensions (mm)163.70 x 76.40 x 7.80162.30 x 77.20 x 9.60
Weight (g)196.00198.00
Battery capacity (mAh)45206000
Fast chargingProprietaryProprietary
ColoursDreamland, Glossy Black, Icy WhiteSmoke Wave Blue, Misty Green, and Feather Black
display
Screen size (inches)6.676.53
TouchscreenYesYes
Resolution1080x2400 pixels1080x2340 pixels
Aspect ratio20:919.5:9
hardware
Processorocta-core-
Processor makeQualcomm Snapdragon 870Qualcomm Snapdragon 662
RAM6GB, 8GB, 12GB4GB
Internal storage128GB, 256GB128GB
Expandable storage-Yes
Expandable storage type-microSD
Expandable storage up to (GB)-512
Dedicated microSD slot-Yes
camera
Rear camera48-megapixel (f/1.79) + 8-megapixel + 5-megapixel48-megapixel (f/1.79) + 8-megapixel (f/2.2) + 2-megapixel (f/2.4)
No. of Rear Cameras3-
Rear autofocusYes-
Rear flashYesYes
Front camera20-megapixel8-megapixel (f/2.0)
No. of Front Cameras1-
software
Operating systemAndroid 11Android 10
SkinMIUI 12MIUI 12
connectivity
Wi-FiYesYes
Wi-Fi standards supported802.11 a/b/g/n/ac/ax802.11 a/b/g/n
GPSYesYes
BluetoothYes, v 5.10Yes, v 4.20
NFCYes-
InfraredYesYes
USB Type-CYesYes
Number of SIMs22
Headphones-3.5mm
FM-Yes
Wi-Fi Direct-Yes
sim 1
SIM TypeNano-SIMNano-SIM
GSM/CDMAGSM-
3GYesYes
4G/ LTEYesYes
5GYes-
sim 2
SIM TypeNano-SIMNano-SIM
GSM/CDMAGSM-
3GYesYes
4G/ LTEYesYes
5GYes-
sensors
In-Display Fingerprint SensorYes-
Compass/ MagnetometerYes-
Proximity sensorYes-
AccelerometerYesYes
Ambient light sensorYesYes
GyroscopeYes-
Face unlock-Yes
Fingerprint sensor-Yes

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