Want to compare Samsung M31 vs Samsung A51 mobile? You have come to the right place. Here you can find Samsung M31 vs Samsung A51 comparison based on display size, processor speed, camera resolution, user experience, memory size, connectivity strength, and overall dimension.

Related: Check out latest Samsung M31 price in India on Priceo.

On one hand, Samsung Galaxy M31 comes with a 6.4-inch Super AMOLED display, which gets a waterdrop style notch over the bezel-less screen. The device is provided with a Li-ion cell having a huge charging capacity of 6,000mAh. The Samsung Galaxy M31 is equipped with Exynos 9 Octa 9611 chipset, which is coupled with Mali G72-MP3 GPU and 6GB RAM. It also has a memory slot that supports up to 512GB with the help of a microSD card.

On the other hand, Samsung A51 is offered with a 6.5-inch Super AMOLED display that has a screen resolution of 1,080 x 2,400 pixels along with a pixel density of 405PPI. The bezel-less display of the smartphone features a punch-hole setup and is protected by Corning Gorilla Glass v3. Its Calculated Screen to Body Ratio stands at 87.44% besides an aspect ratio of 20:9.In terms of photography, the smartphone provides a 48MP f/2.0 Primary Camera offering up to 8x Digital Zoom, a 12MP f/2.2 Ultra-Wide Angle Camera, a 5MP f/2.4 Macro Camera and a 5MP f/2.2  Depth Camera setup, which can shoot high-quality images with detailed insights. The front camera is equally good, featuring a 32MP f/2.2 lens, which can capture sharp and bright selfies.

Our recommendation: We recommend you to buy Samsung A51 over Samsung M31 because it offers a better value for money package with better display and processor.

Samsung M31 vs Samsung A51 Comparison Table

Key Specs
Display6.40-inch6.50-inch
ProcessorSamsung Exynos 9611
Front Camera32-megapixel32-megapixel
Rear Camera64-megapixel + 8-megapixel + 5-megapixel + 5-megapixel48-megapixel + 12-megapixel + 5-megapixel + 5-megapixel
RAM6GB6GB
Storage128GB128GB
Battery Capacity6000mAh4000mAh
OSAndroid 10Android 10
Resolution1080×2340 pixels1080×2400 pixels
 
General
BrandSamsungSamsung
ModelGalaxy M31Galaxy A51
Release dateFebruary 26, 2020January 1, 2020
Launched in IndiaYesYes
Form factorTouchscreenTouchscreen
Body typePlastic
Dimensions (mm)159.20 x 75.10 x 8.90158.50 x 73.60 x 7.90
Weight (g)191.00172.00
Battery capacity (mAh)60004000
Removable batteryNo
Wireless chargingNo
ColoursBlue, BlackPrism Crush Blue, Prism Crush Black, Prism Crush Pink, Prism Crush White
Fast chargingProprietary
Display
Screen size (inches)6.406.50
TouchscreenYesYes
Resolution1080×2340 pixels1080×2400 pixels
Aspect ratio19.5:9
Hardware
Processor2.3GHz octa-core (4×2.3GHz + 4×1.7GHz)
Processor makeSamsung Exynos 9611Samsung Exynos 9611
RAM6GB6GB
Internal storage128GB128GB
Expandable storageYesYes
Expandable storage typemicroSDmicroSD
Expandable storage up to (GB)512512
Dedicated microSD slotYesYes
Camera
Rear camera64-megapixel (f/1.8) + 8-megapixel (f/2.2) + 5-megapixel (f/2.2) + 5-megapixel (f/2.4)48-megapixel (f/2.0) + 12-megapixel (f/2.2) + 5-megapixel (f/2.2) + 5-megapixel (f/2.4)
Rear autofocusYes
Rear flashYes
Front camera32-megapixel (f/2.0)32-megapixel (f/2.2)
Software
Operating systemAndroid 10Android 10
SkinOne UI 2.0One UI 2.0
Connectivity
Wi-FiYesYes
Wi-Fi standards supported802.11 a/b/g/n/ac802.11 ac
GPSYesYes
BluetoothYes, v 5.00Yes, v 5.00
USB Type-CYesYes
Headphones3.5mm3.5mm
Number of SIMs22
Active 4G on both SIM cardsYesYes
NFCYes
USB OTGYes
FMYes
Wi-Fi DirectYes
Sim 1
SIM TypeNano-SIMNano-SIM
GSM/CDMAGSMGSM
3GYesYes
4G/ LTEYesYes
Sim 2
SIM TypeNano-SIMNano-SIM
GSM/CDMAGSMGSM
3GYesYes
4G/ LTEYesYes
Sensors
Face unlockYesYes
Fingerprint sensorYesYes
Compass/ MagnetometerYesYes
Proximity sensorYesYes
AccelerometerYesYes
Ambient light sensorYesYes
GyroscopeYes