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Samsung Galaxy M31 128GB 6GB

  • RAM: 6 GB
  • Internal Storage: 128 GB
  • Battery: 6000mAh
  • Main camera: 64MP + 8MP + 5MP + 5MP
  • Front camera: 32MP
  • Display: 6.4 inch
  • Processor: Exynos 9611 (10nm)
  • Connectivity: Dual SIM, 3G, 4G, VoLTE, Wi-Fi
  • Colors: Ocean Blue, Space Black, Red
  • OS: Android 10.0; One UI 2.0

KSh26,600.00 KSh33,000.00

Right on the heels of the Samsung Galaxy M30 and A30s, Samsung saw it fit to redo those particular versions and tweak the specifications a little, only to end up with the Samsung Galaxy M31, a midrange siren that shines for the camera and the massive battery on board. Let’s see what new about it.

Design and display of the Samsung Galaxy M31

Just like the many mid-range devices we have been accustomed to come from Samsung recently, the Samsung Galaxy M31 also comes with a super AMOLED 6.4-inch screen with the Infinity U teardrop notch design to house the selfie camera. The frame and back are made from plastic although it hardly looks cheap or unappealing. We have a rear-mounted fingerprint scanner and a rectangle quad-camera bump, a design that is inspired from the flagship S10, S20 series of 2020. The screen has a small chin at the bottom, a small speaker grill, the USB-C connector, and the elusive 3.5mm jack. The screen to body ratio is 84.1%, which gives the screen a bezel-less feeling while consuming content. The phone is a little heavy (191g) and thicker (8.9mm) largely because of the massive battery included.

Performance and storage

Just like the many midranges Samsung has been pushing, the Samsung Galaxy M31 with the in house Exynos 9611 10nm chipset, same as was used in the preceding M30 and A51 models. The CPU is a Cortex A73 and A53 combo which clocks out at 2.3GHz, along with a Mali G72 MP3 GPU. The RAM for the base model is bumped all the way to 6GB with a ROM choice for 64/128GB. It has a dedicated microSDXC memory card if that doesn’t feel sufficient enough. The SoC is a decent midrange, handling intensive tasks like gaming with ease, with hardly any lag or slowdowns


The Samsung Galaxy M31 camera set up has clearly been improved. The primary clocks in at 64mp, a considerable improvement from the 48mp of its predecessor. It also has an 8mp ultrawide lens, a 5mp depth sensor, and a dedicated5mp macro shooter. The photos are great as expected, with extra vivid colors due to overexposure especially during daylight. It might also struggle in low light, delivering grainier images and loads of noise. It can shoot 2k video in 30fps and full HD in 30fps. The selfie camera is also better, at 32mp, capturing great detail and decent subject separation in bokeh. It can record 1080p video at 30fps.


The Samsung Galaxy M31 comes with the massive non removable Li-Po battery, much like many of the devices in the M series. This particular spec sets this device apart from its competitors as the phone can easily last more than a day without needing any additional charging, no matter if its average or power intensive tasks. That is very terrific battery life. To help charge it all up in a little over 3hours, we have 15W fast charging, though it could have been greater to have faster charging, more like 25W.


Straight out of the box, the Samsung Galaxy M31 comes with android 10 based One UI 2 OS, which was recently redesigned, feeling lighter, with less bloatware and ability to delete preloaded apps. The UI ecosystem apps are also more productive and less invasive. The experience is more intuitive and interactive, faster, fluid and smooth. Scrolling through One UI 2 feels like a breeze, with faster app opening times and great RAM management for graphics intensive tasks.

The Samsung Galaxy M31 is clearly a worthwhile upgrade from the Samsung Galaxy M30, with focus squarely on key aspects of the predecessor, namely the primary camera, an additional macro lens and more base RAM. We have NFC, Bluetooth 5.0 and dual standby nano sim. It comes in Ocean Blue, Space Black and Red.

Samsung Galaxy M31 Specifications

LAUNCHFebruary, 2020
2GYes, GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3GYes, HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4GYes, LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 13(700), 17(700), 20(800), 26(850), 28(700), 38(2600), 40(2300), 41(2500), 66(1700/2100)
Dimensions159.2 x 75.1 x 8.9mm
Body MaterialFront Gorilla Glass, Plastic back/frame
SIMDual SIM (Nano-SIM)
Size6.4 inches, 84.1% screen-to-body ratio
TypeSuper AMOLED capacitive touchscreen, with 16M colors
Resolution1080 x 2340 pixels, 19.5:9 ratio, (403PPI)
ProtectionCorning Gorilla Glass 3
Operating SystemAndroid v10.0; One UI 2.0
ChipsetExynos 9611 (10nm)
ProcessorOcta-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53)
GPUMali-G72 MP3
Internal Storage64GB
Micro SD SlotYes, microSDXC - dedicated slot
BackQuad: 64MP, f/1.8, 26mm (wide), 1/1.72", 0.8µm, PDAF + 8MP, f/2.2, 12mm (ultrawide), 1/4.0", 1.12µm + 5MP, f/2.4, 25mm (macro), 1/5.0", 1.12µm + 5MP, f/2.2, (depth)
FeaturesLED flash, panorama, HDR, 2160p@30fps, 1080p@30fps, gyro-EIS
FrontSingle: 32MP, f/2.0, 26mm (wide), 1/2.8", 0.8µm
Features2160p@30fps, 1080p@30fps
3.5mm jackYes
Alert typesVibration, ringtones
WLANWi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot
Bluetooth5.0, A2DP, LE
USB2.0, Type-C 1.0 reversible connector
RadioYes, with RDS, recording
Face IDNo
TypeLi-Po, non-removable
15W Fast charger
COLORSOcean Blue, Space Black, Red

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