Redmi K40 vs Xiaomi Redmi 3S comparison

Compare Redmi K40
Compare Xiaomi Redmi 3S
key specs
Display6.67-inch5.00-inch
ProcessorQualcomm Snapdragon 870Qualcomm Snapdragon 430
Front Camera20-megapixel5-megapixel
Rear Camera48-Ultrapixel + 8-megapixel + 5-megapixel13-megapixel
RAM6GB2GB
Storage128GB16GB
Battery Capacity4520mAh4100mAh
OSAndroid 11Android 6.0.1
Resolution1080x2400 pixels720x1280 pixels
general
BrandXiaomiXiaomi
ModelRedmi K40Redmi 3S
Release date25th February 2021June 2016
Launched in IndiaNo-
Form factorTouchscreenTouchscreen
Dimensions (mm)163.70 x 76.40 x 7.80139.30 x 69.60 x 8.50
Weight (g)196.00144.00
Battery capacity (mAh)45204100
Fast chargingProprietary-
ColoursDreamland, Glossy Black, Icy WhiteGrey, Silver, Gold
Removable battery-No
display
Screen size (inches)6.675.00
TouchscreenYesYes
Resolution1080x2400 pixels720x1280 pixels
Aspect ratio20:9-
hardware
Processorocta-core1.1GHz octa-core
Processor makeQualcomm Snapdragon 870Qualcomm Snapdragon 430
RAM6GB2GB
Internal storage128GB16GB
Expandable storage-Yes
Expandable storage type-microSD
Expandable storage up to (GB)-128
camera
Rear camera48-Ultrapixel (f/1.79) + 8-megapixel + 5-megapixel13-megapixel
No. of Rear Cameras3-
Rear autofocusYes-
Rear flashYesLED
Front camera20-megapixel5-megapixel
No. of Front Cameras1-
software
Operating systemAndroid 11Android 6.0.1
SkinMIUI 12MIUI 7
connectivity
Wi-FiYesYes
Wi-Fi standards supported802.11 a/b/g/n/ac/Yes802.11 b/g/n
GPSYesYes
BluetoothYes, v 5.10Yes, v 4.10
NFCYesNo
InfraredYesYes
USB Type-CYes-
Number of SIMs22
USB OTG-Yes
Headphones-3.5mm
FM-Yes
Wi-Fi Direct-No
Mobile High-Definition Link (MHL)-No
sim 1
SIM TypeNano-SIMMicro-SIM
GSM/CDMAGSMGSM
3GYesYes
4G/ LTEYesYes
5GYes-
sim 2
SIM TypeNano-SIMNano-SIM
GSM/CDMAGSMGSM
3GYesYes
4G/ LTEYesYes
5GYes-
sensors
In-Display Fingerprint SensorYes-
Compass/ MagnetometerYesYes
Proximity sensorYesYes
AccelerometerYesYes
Ambient light sensorYesYes
GyroscopeYesYes
Barometer-No
Temperature sensor-No
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