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Redmi A7 4G vs Samsung Galaxy A21s comparison

 Compare Redmi A7 4G
Redmi A7 4G
Compare Samsung Galaxy A21s
Samsung Galaxy A21s
key specs
Display6.88-inch6.50-inch
ProcessorUnisoc T7250Samsung Exynos 850
Front Camera8-megapixel13-megapixel
Rear Camera13-megapixel48-megapixel + 8-megapixel + 2-megapixel + 2-megapixel
RAM4GB4GB
Storage64GB64GB
Battery Capacity5200mAh5000mAh
OSAndroid 16Android 10
Resolution720x1640 pixels720x1600 pixels
general
BrandRedmiSamsung
ModelA7 4GGalaxy A21s
Release dateApril 21, 2026May 15, 2020
AI EnabledNo-
Launched in IndiaYesYes
Form factorTouchscreenTouchscreen
Dimensions (mm)171.79 x 79.77 x 8.26163.60 x 75.30 x 8.90
Weight (g)193.00191.00
IP ratingIP52-
Battery capacity (mAh)52005000
Removable batteryNoNo
Fast charging15W Fast ChargingProprietary
Wireless chargingNo-
ColoursBlack, Sky BlueWhite, Black, Blue
display
Refresh Rate120 Hz-
Resolution StandardHD+-
Screen size (inches)6.886.50
TouchscreenYesYes
Resolution720x1640 pixels720x1600 pixels
hardware
Processor1.8GHz octa-core2GHz octa-core
Processor makeUnisoc T7250Samsung Exynos 850
RAM4GB4GB
Internal storage64GB64GB
Expandable storageYesYes
Expandable storage typemicroSDmicroSD
Expandable storage up to (GB)2048512
Dedicated microSD slotYesYes
camera
Rear camera13-megapixel48-megapixel (f/2.0) + 8-megapixel (f/2.0) + 2-megapixel (f/2.4) + 2-megapixel (f/2.4)
No. of Rear Cameras1-
Front camera8-megapixel13-megapixel (f/2.2)
No. of Front Cameras1-
Rear flash-Yes
software
Operating systemAndroid 16Android 10
SkinHyperOS 3One UI
connectivity
Wi-FiYesYes
Wi-Fi standards supported802.11 ac-
GPSYes-
BluetoothYes, v 5.20Yes, v 5.00
USB Type-CYes-
Number of SIMs2-
Active 4G on both SIM cardsYes-
NFC-Yes
Headphones-3.5mm
sim 1
SIM TypeNano-SIM-
3GYes-
4G/ LTEYes-
sim 2
SIM TypeNano-SIM-
3GYes-
4G/ LTEYes-
sensors
Fingerprint sensorYesYes
Compass/ MagnetometerYes-
AccelerometerYes-
Ambient light sensorYes-
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