Samsung Galaxy M31 – A Marvelous Mid-Range Phone

In a highly competitive market flooded with smartphones, Samsung has consistently managed to stand out with its Galaxy series. Among these, the Samsung Galaxy M31 has garnered significant attention, especially in the mid-range smartphone segment. Packed with impressive features and a budget-friendly price tag, the Samsung M31 has become a popular choice for tech-savvy users. In this review, we’ll dive deep into its specifications, design, camera capabilities, performance, and more.

Design and Build of Samsung Galaxy M31

The Samsung M31 boasts a sleek and attractive design that fits comfortably in hand. With dimensions of 159.2 x 75.1 x 8.9 mm and weighing just 191g, the phone feels light yet sturdy. It features a glass front with Gorilla Glass 3 protection, a plastic back, and a plastic frame. Though not as premium as metal or glass, the plastic components ensure durability and contribute to its budget-friendly price.

Display and Visual Experience

Equipped with a 6.4-inch Super AMOLED display, the Samsung M31 offers vibrant colors and sharp contrasts. The peak brightness of 420 nits makes it easily readable outdoors. The phone’s 1080 x 2340-pixel resolution and 19.5:9 aspect ratio ensure an immersive visual experience. Corning Gorilla Glass 3 protects the display from scratches and minor impacts, making it ideal for daily use.

Samsung Galaxy M31


2G bandsGSM 850 / 900 / 1800 / 1900 – SIM 1 & SIM 2
3G bandsHSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 26, 28, 38, 40, 41, 66
Dimensions159.2 x 75.1 x 8.9 mm (6.27 x 2.96 x 0.35 in)
Weight191 g (6.74 oz)
BuildGlass front (Gorilla Glass 3), plastic back, plastic frame
SIMDual SIM (Nano-SIM, dual stand-by)
TypeSuper AMOLED, 420 nits (peak)
Size6.4 inches, 100.5 cm2 (~84.1% screen-to-body ratio)
Resolution1080 x 2340 pixels, 19.5:9 ratio (~403 ppi density)
ProtectionCorning Gorilla Glass 3
OSAndroid 10, upgradable to Android 12, One UI 4.1
ChipsetExynos 9611 (10nm)
CPUOcta-core (4×2.3 GHz Cortex-A73 & 4×1.7 GHz Cortex-A53)
Card slotmicroSDXC (dedicated slot)
Internal64GB 6GB RAM, 128GB 6GB RAM, 128GB 8GB RAM UFS 2.1
Galaxy M31
Triple64 MP, f/1.8, 26mm (wide), 1/1.72″, 0.8µm, PDAF
8 MP, f/2.2, 123˚ (ultrawide), 1/4.0″, 1.12µm
5 MP, f/2.4, (macro)
5 MP, f/2.2, (depth)
FeaturesLED flash, panorama, HDR
Video4K@30fps, 1080p@30fps, gyro-EIS
Single32 MP, f/2.0, 26mm (wide), 1/2.8″, 0.8µm
Video4K@30fps, 1080p@30fps
3.5mm jackYes
WLANWi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Bluetooth5.0, A2DP, LE
NFCYes (market/region dependent)
RadioFM radio, RDS, recording
USBUSB Type-C 2.0
SensorsFingerprint (rear-mounted), accelerometer, gyro, compass
Virtual proximity sensing
TypeLi-Po 6000 mAh, non-removable
Charging15W wired
ColorsOcean Blue, Space Black, Red
ModelsSM-M315F, SM-M315F/DS, SM-M315F/DSN
SAR0.52 W/kg (head)0.69 W/kg (body)

Performance and User Interface

Running on Android 10, upgradable to Android 12 with One UI 4.1, the Galaxy M31 delivers a smooth and user-friendly interface. Powered by the Exynos 9611 (10nm) chipset and Octa-core processor (4×2.3 GHz Cortex-A73 & 4×1.7 GHz Cortex-A53), the phone performs well in everyday tasks, including multitasking and gaming. The Mali-G72 MP3 GPU enhances graphics performance, providing an enjoyable gaming experience.

Camera Capabilities

One of the standout features of the smartphone is its versatile camera setup. The rear camera setup includes a 64 MP primary lens, an 8 MP ultra-wide lens, a 5 MP macro lens, and a 5 MP depth sensor. The primary lens captures stunning details and sharp images, while the ultra-wide lens expands the frame, perfect for landscape shots. The macro lens enables capturing intricate close-up shots, and the depth sensor adds a pleasing bokeh effect to portraits.

Battery Life and Charging

The Samsung M31 is equipped with an impressive 6000 mAh Li-Po non-removable battery, ensuring long hours of usage without frequent recharging. It supports 15W wired charging, which efficiently charges the device in a reasonable amount of time. The battery life is a significant advantage for users who prefer extended phone usage without worrying about running out of power.

Connectivity and Additional Features

The phone offers seamless connectivity options, including Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, Bluetooth 5.0, A2DP, and LE. Its GPS, GLONASS, GALILEO, and BDS capabilities provide accurate navigation. Additionally, it includes NFC (market/region dependent) and FM radio with RDS and recording functionality. The rear-mounted fingerprint sensor, accelerometer, gyro, compass, and virtual proximity sensing enhance its usability.

Connectivity and Additional Features

Pros and Cons



  • Impressive AMOLED display with Gorilla Glass 3 protection
  • Impressive AMOLED display with Gorilla Glass 3 protection
  • Versatile quad-camera setup for photography enthusiasts
  • Long-lasting 6000 mAh battery with 15W wired charging
  • Comprehensive connectivity options and additional features
  • Plastic build may feel less premium compared to metal or glass
  • No 5G support for users seeking next-gen connectivity
  • No 5G support for users seeking next-gen connectivity

Final Thoughts

In conclusion, the Samsung M31 offers exceptional value for money, catering to the needs of budget-conscious consumers without compromising on essential features. Its stunning display, capable camera setup, reliable performance, and outstanding battery life make it an excellent choice for mid-range smartphone seekers.

FAQs (Frequently Asked Questions)

Does the Samsung M31 support 5G?

No, the Galaxy M31 does not support 5G connectivity. It operates on 4G LTE networks.

Is the Galaxy M31 suitable for gaming?

Yes, the phone’s Octa-core processor and Mali-G72 MP3 GPU ensure smooth gaming performance for most popular mobile games.

Does the Samsung M31 have a dedicated microSD card slot?

Yes, the phone comes with a dedicated microSDXC card slot to expand storage.

Can the Galaxy M31 capture 4K videos?

Yes, the primary rear camera can shoot 4K videos at 30fps, ensuring high-quality video recording.

Does the phone support fast charging?

While the phone supports wired 15W charging, it does not support fast charging technologies like 25W or 50W charging.

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