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Samsung Galaxy M21 vs Oppo A91 comparison

 Compare Samsung Galaxy M21
Samsung Galaxy M21
Compare Oppo A91
Oppo A91
ratings
Overall NDTV RatingRead Review-
Design Rating-
Display Rating-
Software Rating-
Performance Rating-
Battery Life Rating-
Camera Rating-
Value for Money Rating-
key specs
Display6.40-inch6.40-inch
ProcessorSamsung Exynos 9611octa-core
Front Camera20-megapixelUnspecified
Rear Camera48-megapixel + 8-megapixel + 5-megapixel48-megapixel + 8-megapixel
RAM4GB8GB
Storage64GB128GB
Battery Capacity6000mAh4000mAh
OSAndroid 10Android 9
Resolution2340x1080 pixels1080x2400 pixels
general
BrandSamsungOppo
ModelGalaxy M21A91
Release dateMarch 18, 2020December 20, 2019
Launched in IndiaYes-
Form factorTouchscreenTouchscreen
Thickness8.9-
Weight (g)188.00-
Battery capacity (mAh)60004000
Removable batteryNoNo
Fast chargingProprietaryVOOC
Wireless chargingNo-
ColoursMidnight Blue, Raven BlackBlack, Blue, Red
display
Screen size (inches)6.406.40
TouchscreenYesYes
Resolution2340x1080 pixels1080x2400 pixels
Protection typeGorilla GlassGorilla Glass
Aspect ratio19.5:9-
hardware
Processor1.7GHz octa-core (4x1.7GHz + 4x2.3GHz)octa-core
Processor makeSamsung Exynos 9611-
RAM4GB8GB
Internal storage64GB128GB
Expandable storageYes-
Expandable storage typemicroSD-
Expandable storage up to (GB)512-
camera
Rear camera48-megapixel + 8-megapixel + 5-megapixel48-megapixel + 8-megapixel
Rear autofocusYesYes
Rear flashYesYes
Front camera20-megapixelUnspecified
Front flashNoNo
software
Operating systemAndroid 10Android 9
SkinOne UI 2.0ColorOS
connectivity
Wi-FiYesYes
Wi-Fi standards supported802.11 a/b/g802.11 a/b/g/n
GPSYesYes
BluetoothYesYes
USB Type-CYes-
Headphones3.5mm-
Number of SIMs2-
Active 4G on both SIM cards-Yes
sim 1
SIM TypeNano-SIM-
GSM/CDMAGSM-
3GYes-
4G/ LTEYes-
sim 2
SIM TypeNano-SIM-
GSM/CDMAGSM-
3GYes-
4G/ LTEYes-
sensors
Face unlockYes-
Fingerprint sensorYesYes
Compass/ MagnetometerYesYes
Proximity sensorYesYes
AccelerometerYesYes
Ambient light sensorYesYes

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