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Samsung Galaxy A40 vs Redmi Note 7 Pro vs Redmi Note 7 vs Xiaomi Redmi Note 4 comparison

 Compare Samsung Galaxy A40
Samsung Galaxy A40
Compare Redmi Note 7 Pro
Redmi Note 7 Pro
Compare Redmi Note 7
Redmi Note 7
Compare Xiaomi Redmi Note 4
Xiaomi Redmi Note 4
key specs
Display5.90-inch6.30-inch6.30-inch5.50-inch
ProcessorSamsung Exynos 7885Qualcomm Snapdragon 675Qualcomm Snapdragon 660Qualcomm Snapdragon 625
Front Camera25-megapixel13-megapixel13-megapixel 5-megapixel
Rear Camera16-megapixel 48-megapixel + 5-megapixel12-megapixel + 2-megapixel13-megapixel
RAM4GB4GB4GB4GB
Storage64GB64GB64GB64GB
Battery Capacity3100mAh4000mAh4000mAh4100mAh
OSAndroid 9.0 PieAndroid PieAndroid 9.0Android 6.0
Resolution1080x2280 pixels1080x2340 pixels1080x2340 pixels1080x1920 pixels
general
BrandSamsungXiaomiXiaomiXiaomi
ModelGalaxy A40Redmi Note 7 ProRedmi Note 7Redmi Note 4
Release dateMarch 1, 2019February 1, 2019January 1, 2019August 1, 2016
Form factorTouchscreenTouchscreenTouchscreenTouchscreen
Dimensions (mm)144.30 x 69.10 x 7.90159.21 x 75.21 x 8.10159.21 x 75.21 x 8.10151.00 x 76.00 x 8.30
Battery capacity (mAh)3100400040004100
ColoursBlue, Black, Orange, WhiteClassic Space Black, Nebula Red, Neptune BlueOnyx Black, Ruby Red, Sapphire BlueGold, Grey, Matte Black
Launched in India-YesYesYes
Body type-GlassGlass-
Weight (g)-186.00185.00175.00
Removable battery-NoNoNo
Fast charging-Quick Charge 4+Quick Charge-
Wireless charging--No-
SAR value--0.96-
display
Screen size (inches)5.906.306.305.50
TouchscreenYesYesYesYes
Resolution1080x2280 pixels1080x2340 pixels1080x2340 pixels1080x1920 pixels
Aspect ratio19:919.5:919.5:916:9
Protection type-Gorilla GlassGorilla Glass-
Pixels per inch (PPI)-409409401
hardware
Processor1.8GHz octa-core2GHz octa-core2.2GHz2GHz octa-core
Processor makeSamsung Exynos 7885Qualcomm Snapdragon 675Qualcomm Snapdragon 660Qualcomm Snapdragon 625
RAM4GB4GB4GB4GB
Internal storage64GB64GB64GB64GB
Expandable storageYesYesYesYes
Expandable storage typemicroSDmicroSDmicroSDmicroSD
Expandable storage up to (GB)--256128
Dedicated microSD slot--No-
camera
Rear camera16-megapixel (f/2.0)48-megapixel (f/1.79, 1.6-micron) + 5-megapixel12-megapixel (f/2.2, 1.25-micron) + 2-megapixel13-megapixel (f/2.0, 1.12-micron)
Rear autofocusYesYesYesPhase detection autofocus
Rear flashYesLEDLEDDual LED
Front camera25-megapixel13-megapixel13-megapixel (f/2.0, 1.12-micron)5-megapixel (f/2.0)
software
Operating systemAndroid 9.0 PieAndroid PieAndroid 9.0Android 6.0
SkinOne UIMIUI 10MIUI 10MIUI 8
connectivity
Wi-FiYesYesYesYes
GPSYesYesYesYes
BluetoothYes, v 4.20Yes, v 5.00Yes, v 5.00Yes, v 4.10
NFCYes--No
USB Type-CYesYesYes-
Headphones3.5mm3.5mm3.5mm3.5mm
Number of SIMs2222
Wi-Fi standards supported-802.11 a/b/g/n/ac802.11 a/b/g/n/ac802.11 a/b/g/n
Infrared-Yes-Yes
USB OTG-YesYesYes
Active 4G on both SIM cards-YesYes-
FM--YesYes
Micro-USB---Yes
Wi-Fi Direct---No
Mobile High-Definition Link (MHL)---No
sim 1
SIM TypeNano-SIMNano-SIMNano-SIMMicro-SIM
GSM/CDMAGSMGSMGSMGSM
3GYesYesYesYes
4G/ LTEYesYesYesYes
sim 2
SIM TypeNano-SIMNano-SIMNano-SIMNano-SIM
GSM/CDMAGSMGSMGSMGSM
3GYesYesYesYes
4G/ LTEYesYesYesYes
sensors
Face unlockYesYesYes-
Fingerprint sensorYesYesYesYes
Compass/ MagnetometerYesYes-Yes
Proximity sensorYesYesYesYes
AccelerometerYesYesYesYes
Ambient light sensorYesYesYesYes
GyroscopeYesYesYesYes
Barometer---No
Temperature sensor---No
ratings
Overall NDTV Rating-Read ReviewRead ReviewRead Review
Design Rating-
Display Rating-
Software Rating-
Performance Rating-
Battery Life Rating-
Camera Rating-
Value for Money Rating-

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