Samsung M31 Reviews

Samsung Galaxy M31 Full Specifications


ModelGalaxy M31
Release date25th February 2020
Launched in IndiaYes
Form factorTouchscreen
Weight (g)191.00
Battery capacity (mAh)6000
ColoursOcean Blue, Space Black


Screen size (inches)6.40
Resolution1080×2340 pixels
Aspect ratio19.5:9


Processor makeSamsung Exynos 9611
Internal storage64GB
Expandable storageYes
Expandable storage typemicroSD
Expandable storage up to (GB)512


Rear camera64-megapixel (f/1.8) + 8-megapixel (f/2.2) + 5-megapixel (f/2.2) + 5-megapixel (f/2.4)
Rear autofocusYes
Rear flashYes
Front camera32-megapixel


Operating systemAndroid 10
SkinOne UI 2.0


USB Type-CYes
Number of SIMs2
SIM TypeNano-SIM
4G/ LTEYes
Supports 4G in India (Band 40)Yes
SIM TypeNano-SIM
4G/ LTEYes
Supports 4G in India (Band 40)Yes


Face unlockYes
Fingerprint sensorYes
Compass/ MagnetometerYes
Proximity sensorYes
Ambient light sensorYes


At first glance, it is hard to distinguish between the previous model Samsung Galaxy M30s and Samsung Galaxy M31 from the front. Both smartphones come with 6.4-inch displays with waterdrop notches, which you call Infinity U displays, The bezels aren’t thin but are acceptable for this price range. Just like with other M series smartphones, Samsung has used plastic material in the construction of the M31. The earpiece is sleek and sits above the display in the frame of the smartphone.

Samsung Galaxy M31 feels very comfortable to hold in the hand. The sides of the phones are slightly curved which helps in the grip. Samsung has crafted the power and volume buttons on the right of the device. The power button is easy to reach but the volume buttons could have been placed better.

samsung m31

On the left side is the SIM tray which did not sit perfectly flush on our review unit. The Galaxy M31 has a 3.5mm headphone jack, primary microphone, USB Type-C port, and speaker at the bottom of the device. On the top, there is only a secondary microphone.

Looking at the backside of the Galaxy M31, you’ll see some changes. The camera module is similar to the previous model of the Galaxy M30s but it now adds a fourth camera. The fingerprint scanner was comfortable for us to reach while holding the device.

Samsung M31 comes with a big 6,000mAh battery and weighs 191g makes the device feel a little heavy. Samsung offers you a 15W charger in the box which should help keep charging times down. The company offers Samsung Galaxy M31 in two colours, Ocean Blue and Space Black. The fingerprint scanner is very fast. There is no case in the box, so you have to buy one.

samsung m31


The specification sheet of the Galaxy M31 looks very similar to that of the Galaxy M30s. It comes with a 6.4-inch AMOLED display with a Full-HD+ resolution. Corning Gorilla Glass 3 is used for the protection of this device. The display has good viewing angles. There is two colour to choose from, and you can also change the white balance.

Samsung has retained the Exynos 9611 SoC from Samsung Galaxy M30s. It comes with an octa-core processor with four performance ARM Cortex-A73 cores clocked at 2.3GHz and four efficiency Cortex-A53 cores clocked at 1.7GHz. For graphics, it has the Mali-G72 GPU. You get 6GB of RAM and a choice between a 64GB storage variant and a 128GB storage variant for Rs. 15,999 or Rs. 16,999 respectively.


It has two Nano-SIM slots that support 4G as well as VOLTE.
Talking about the software, Samsung ships the new Galaxy M31 with OneUI 2.0 on the latest Android 10. The software is similar to what we have seen on the recently launched Galaxy S10 Lite and Galaxy Note 10 Lite. We find a fair amount of bloatware on Galaxy M31. Apart from the Google apps, Netflix, Facebook, and Samsung Max were preinstalled on the M13. Samsung also has its own official apps such as My Galaxy and Samsung Shop. We found My Galaxy to be annoying as it kept pushing notifications throughout the day.

Be careful while setting up the device settings, or Samsung will also send you marketing information. While setting up the phone it suggests that you download several other apps that we suggest you skip.

You can enjoy the Android 10 features such as Dark Mode and Focus Mode, which can be enabled very easily through the notification bar. Dolby Atmos is available. Digital Wellbeing and Parental Controls are also present on the Samsung Galaxy M31. Traditional gestures like double-tap to wake, gesture screenshot is present on the Galaxy M31 as well.

samsung m31


Samsung has boosted up RAM on the Samsung Galaxy M31 compared to its predecessor which should give it some advantage while multitasking. We did not notice any lag while using the smartphone. The device loads apps quickly, however, it takes some time to load big apps. Since there is plenty of RAM, multitasking is easy and we did not find ourselves waiting for an app to load all over again.

The fingerprint scanner is very quick to unlock the smartphone, and the selfie camera does a good job with face recognition. We enjoyed movies on the AMOLED display.

We played PUBG on the Galaxy M31, and the settings were set to high by default with the graphics set to HD. We played the game at these settings and we did not notice any kind of issue. After playing for 20 minutes the device gets warm and a four percent reduction in the battery. The big battery will allow you to play for quite long without plugging the smartphone into the charger.

With our usage, the battery lasted for close to two days without any issues. If you love battery then, the Galaxy M31 will not disappoint you.

samsung m31


The Galaxy M31 comes with a quad-camera setup at the back and a single 32-megapixel selfie shooter. The primary camera on the Samsung M31 has a 64-megapixel resolution with f/1.8 aperture. This camera takes 16-megapixel binned shots by default but you can switch to the full resolution also. There is an 8-megapixel ultra-wide-angle camera with an f/2.2 aperture. The other two cameras are of the 5-megapixel depth sensor and a 5-megapixel macro camera. Samsung’s camera app is the same as before and we could find it very easily.


Samsung has seen success with the Galaxy M30s. Samsung has upgraded the RAM, added a fourth rear camera, and preloaded Android 10. Samsung Galaxy M31 does not feel like a completely new device, but it’s an upgraded version of Galaxy M30s.

Exynos 9611 is good for this segment but we wouldn’t have complained if this phone had a more powerful processor to fend off the competition. Samsung upgrades this device which makes this phone slightly better and more versatile.

Battery life is the main highlight in M31, and it can last for two days without needing to be plugged in the charger, something the competition at this price level cannot do very easily. The Redmi Note 8 Pro and the Realme X2 will still offer you more bang for your buck overall, but if you don’t care for benchmark scores and just want a device that covers the basics and has a great battery, Samsung Galaxy M31 is made for you.

samsung m31

I hope my Samsung M31 review is helpful for you.

Check out my previous post on Asus FX504.