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Realme 3 vs Redmi Note 7 vs Samsung Galaxy M20 vs Xiaomi Mi A2 comparison

 Compare Realme 3
Realme 3
Compare Redmi Note 7
Redmi Note 7
Compare Samsung Galaxy M20
Samsung Galaxy M20
Compare Xiaomi Mi A2
Xiaomi Mi A2
ratings
Overall NDTV RatingRead ReviewRead ReviewRead ReviewRead Review
Design Rating
Display Rating
Software Rating
Performance Rating
Battery Life Rating
Camera Rating
Value for Money Rating
key specs
Display6.20-inch6.30-inch6.30-inch5.99-inch
ProcessorMediaTek Helio P70Qualcomm Snapdragon 660Samsung Exynos 7904Qualcomm Snapdragon 660
Front Camera13-megapixel 13-megapixel 8-megapixel 20-megapixel
Rear Camera13-megapixel + 2-megapixel12-megapixel + 2-megapixel13-megapixel + 5-megapixel 12-megapixel + 20-megapixel
RAM3GB4GB3GB4GB
Storage32GB64GB32GB64GB
Battery Capacity4230mAh4000mAh5000mAh3000mAh
OSAndroid PieAndroid 9.0Android 8.1 OreoAndroid 8.1 Oreo
Resolution720x1520 pixels1080x2340 pixels1080x2340 pixels1080x2160 pixels
general
BrandRealmeXiaomiSamsungXiaomi
Model3Redmi Note 7Galaxy M20Mi A2
Release dateMarch 1, 2019January 1, 2019January 1, 2019July 1, 2018
Launched in IndiaYesYesYesYes
Form factorTouchscreenTouchscreenTouchscreenTouchscreen
Dimensions (mm)156.10 x 75.60 x 8.30159.21 x 75.21 x 8.10-158.70 x 75.40 x 7.30
Weight (g)175.00185.00-168.00
Battery capacity (mAh)4230400050003000
Removable batteryNoNoNoNo
Wireless chargingNoNoNo-
ColoursDynamic Black, Black, Radiant BlueOnyx Black, Ruby Red, Sapphire BlueCharcoal Black, Ocean BlueBlack, Gold, Lake Blue, Rose Gold
Body type-Glass--
Fast charging-Quick Charge--
SAR value-0.96--
display
Screen size (inches)6.206.306.305.99
TouchscreenYesYesYesYes
Resolution720x1520 pixels1080x2340 pixels1080x2340 pixels1080x2160 pixels
Protection typeGorilla GlassGorilla Glass--
Aspect ratio19:919.5:919.5:918:9
Pixels per inch (PPI)-409-403
hardware
Processor2.1GHz2.2GHz1.6GHz octa-core (2x1.8GHz + 6x1.6GHz)octa-core (4x2.2GHz + 4x1.8GHz)
Processor makeMediaTek Helio P70Qualcomm Snapdragon 660Samsung Exynos 7904Qualcomm Snapdragon 660
RAM3GB4GB3GB4GB
Internal storage32GB64GB32GB64GB
Expandable storageYesYesYesNo
Expandable storage typemicroSDmicroSDmicroSDmicroSD
Expandable storage up to (GB)256256512-
Dedicated microSD slotYesNoYes-
camera
Rear camera13-megapixel (f/1.8, 1.12-micron) + 2-megapixel12-megapixel (f/2.2, 1.25-micron) + 2-megapixel13-megapixel (f/1.9) + 5-megapixel (f/2.2)12-megapixel (f/1.8, 1.25-micron) + 20-megapixel (f/1.8, 1.0-micron)
Rear autofocusPhase detection autofocusYesYesPhase detection autofocus
Rear flashYesLEDYesDual LED
Front camera13-megapixel (f/2.0, 1.12-micron)13-megapixel (f/2.0, 1.12-micron)8-megapixel (f/2.0)20-megapixel (f/2.2, 1.0-micron)
Front flash--NoLED
software
Operating systemAndroid PieAndroid 9.0Android 8.1 OreoAndroid 8.1 Oreo
SkinColorOS 6MIUI 10Samsung Experience 9.5 UX-
connectivity
Wi-FiYesYes-Yes
Wi-Fi standards supported802.11 a/b/g/n802.11 a/b/g/n/ac802.11 b/g/n802.11 a/b/g/n/ac
GPSYesYesYesYes
BluetoothYes, v 4.20Yes, v 5.00YesYes, v 5.00
USB OTGYesYes-Yes
Micro-USBYes-No-
Headphones3.5mm3.5mm3.5mmNo
FMNoYes--
Number of SIMs2222
Active 4G on both SIM cardsYesYes--
USB Type-C-YesYes-
NFC---Yes
Wi-Fi Direct---Yes
sim 1
SIM TypeNano-SIMNano-SIMNano-SIMNano-SIM
GSM/CDMAGSMGSMGSMGSM
3GYesYesYesYes
4G/ LTE-YesYesYes
sim 2
SIM TypeNano-SIMNano-SIMNano-SIMNano-SIM
GSM/CDMAGSMGSMGSMGSM
3GYesYesYesYes
4G/ LTE-YesYesYes
sensors
Face unlockYesYesYes-
Fingerprint sensorYesYesYesYes
Compass/ MagnetometerYes--Yes
Proximity sensorYesYesYesYes
AccelerometerYesYesYesYes
Ambient light sensorYesYes-Yes
GyroscopeYesYes-Yes

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