Samsung launched another M series smartphone. Samsung Galaxy M31s comes with 64MP quad rear cameras, a 6,000mAh battery but an old Exynos 9611 processor.This comes with upgraded camera, Infinity-O AMOLED display, 25W fast charging and 128GB storage as a standard. Let us dive into the review to find out.

Samsung has finally moved from the Infinity U display from earlier M series models to a 6.5-inch Full HD+ Infinity-O Super AMOLED display with a resolution of 1080×2400 pixels at about 404 PPI, aspect ratio of 20:9. The display looks bright, thanks to 420 nits brightness, offers good color reproduction and the sunlight legibility is good as well. The screen is protected by Corning Gorilla Glass 3.

The Galaxy M31s spans 6.5-inch and supports a Full HD+ screen resolution. It is based on a Super AMOLED display panel and features an aspect ratio of 20:9. The inclusion of a Super AMOLED display is pretty great for a device that falls under Rs. 25,000. The device comes with support for various display features such as adaptive brightness, dark mode, blue light filter, screen mode (vivid or natural), always-on-display, and accidental touch protection.

The Galaxy M31s is powered by the Exynos 9611 processor, much like its predecessor and comes in two RAM/Storage options: 6GB/128GB and 8GB/128GB, out of which I got hold of the base model. The storage options can be further expanded up to 512GB via a memory card.

Among others, the fingerprint sensor’s placement is a good addition and is able to unlock the device in 1 or 2 seconds. The audio quality is good but feels slightly echoed at times.

The 6,000mAh battery is one of the main highlights of the Galaxy M31s and the inclusion of 25W fast charging proves better instead of the 15W fast charging available on the Galaxy M31. The smartphone was able to last more than a day with the aforementioned usage and more than 2 days on standby.

The primary 64MP rear camera is being projected as one of the highlights of the Galaxy M31s. On the back, you also get a 12MP ultra wide-angle camera and a 5-megapixel macro and depth sensor each offering f/2.4 aperture. The device boasts of a – Single Take – feature that basically allows users to take multiple pictures and videos. You can then select what you like. Overall, the image quality is impressive as the pictures are rich in colour and sharpness.

The glass like plastic back is not bad at all, and feels quite premium compared to the M31. The ‘Mirage Blue’ dual-tone finish looks a bit flashy. The straight sides and slightly rounded corners look quite nice, as is the overall build quality. Yes, it does catch fingerprints, but you can wipe them off quite easily.

Check out the details about this mobilephone at a glance :


Glass front, polycarbonate back and side frame


6.5-inch, 19.5:9, FHD+ (1080 x 2400px), Super AMOLED

Rear camera:

Primary 64MP, f/1.8 aperture; Ultra wide-angle: 12MP, f/2.2 aperture; 5MP f2.4 Macro camera; 5MP depth sensor; LED flash; 2160p@30fps video recording

Front camera:

32MP, f/2.2 aperture
Chipset: Exynos 9611: octa-core CPU (4×2.3 GHz Cortex-A73 & 4×1.7 GHz Cortex-A53), Mali-G72 MP3 GPU


6/128GB or 8/128GB UFS 2.1; dedicated microSD slot


Android 10; Samsung One UI 2.1


6,000mAh, 25W charging


Dual SIM (4G), Bluetooth 5.0, Wi-Fi a/b/g/n/ac, USB-C; 3.5mm audio jack

Misc :

Side-mounted fingerprint reader, FM radio.


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