Samsung Galaxy A40 vs Samsung Galaxy A30 vs Samsung Galaxy A7 (2018) vs Samsung Galaxy A8 (2018) comparison

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ratings
Overall NDTV Rating-Read ReviewRead Review-
Design Rating--
Display Rating--
Software Rating--
Performance Rating--
Battery Life Rating--
Camera Rating--
Value for Money Rating--
key specs
Display5.90-inch6.40-inch6.00-inch5.60-inch
Processor1.8GHz octa-core-2.2GHz octa-core1.6GHz octa-core
Front Camera25-megapixel16-megapixel 24-megapixel 16-megapixel
Resolution1080x2280 pixels1080x2340 pixels1080x2220 pixels1080x2220 pixels
RAM4GB4GB4GB4GB
OSAndroid 9.0 PieAndroid PieAndroid 8.0Android 7.1.1
Storage64GB64GB64GB32GB
Rear Camera16-megapixel 16-megapixel + 5-megapixel 24-megapixel + 8-megapixel + 5-megapixel 16-megapixel
Battery Capacity3100mAh4000mAh3300mAh3000mAh
general
Release dateMarch 2019February 2019September 2018December 2017
Form factorTouchscreenTouchscreen-Touchscreen
Dimensions (mm)144.30 x 69.10 x 7.90158.50 x 74.70 x 7.70159.80 x 76.80 x 7.50149.20 x 70.60 x 8.40
Battery capacity (mAh)3100400033003000
ColoursBlue, Black, Orange, WhiteRed, Blue, BlackBlack, Blue, Gold, PinkBlack, Orchid Grey, Gold, Blue
Launched in India-YesYes-
Fast charging-Proprietary--
Weight (g)--168.00172.00
Removable battery--No-
Wireless charging--No-
display
Screen size (inches)5.906.406.005.60
TouchscreenYesYesYesYes
Resolution1080x2280 pixels1080x2340 pixels1080x2220 pixels1080x2220 pixels
Aspect ratio19:9-18.5:9-
hardware
Processor1.8GHz octa-core-2.2GHz octa-core1.6GHz octa-core
Processor makeSamsung Exynos 7885Exynos 7904--
RAM4GB4GB4GB4GB
Internal storage64GB64GB64GB32GB
Expandable storageYesYesYesYes
Expandable storage typemicroSDmicroSDmicroSDmicroSD
Expandable storage up to (GB)-512512256
Dedicated microSD slot-Yes--
camera
Rear camera16-megapixel (f/2.0)16-megapixel (f/1.7) + 5-megapixel (f/2.2)24-megapixel (f/1.7) + 8-megapixel (f/2.4) + 5-megapixel (f/2.2)16-megapixel
Rear autofocusYesYesYes-
Rear flashYesYesYesLED
Front camera25-megapixel16-megapixel (f/2.0)24-megapixel (f/2.0)16-megapixel
Front autofocus--No-
Front flash--Yes-
software
Operating systemAndroid 9.0 PieAndroid PieAndroid 8.0Android 7.1.1
SkinOne UIOne UI--
connectivity
Wi-FiYesYesYesYes
GPSYesYesYesYes
BluetoothYes, v 4.20YesYes, v 5.00Yes, v 5.00
NFCYes-NoYes
USB Type-CYesYes--
Headphones3.5mm3.5mm-3.5mm
Number of SIMs222-
Wi-Fi standards supported--802.11 a/b/g/n/ac802.11 a/b/g/n/ac
FM--Yes-
Active 4G on both SIM cards--Yes-
sim 1
SIM TypeNano-SIMNano-SIMNano-SIM-
GSM/CDMAGSMGSM--
3GYesYes--
4G/ LTEYesYes--
sim 2
SIM TypeNano-SIMNano-SIMNano-SIM-
GSM/CDMAGSMGSM--
3GYesYes--
4G/ LTEYesYesYes-
sensors
Face unlockYes-Yes-
Fingerprint sensorYesYesYes-
Compass/ MagnetometerYes-YesYes
Proximity sensorYesYesYesYes
AccelerometerYesYesYesYes
Ambient light sensorYes-Yes-
GyroscopeYes-YesYes
Barometer---Yes