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Samsung Galaxy M31s
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Battery: Li-Po 6000 mAh
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RAM: 6GB, 8GB
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Storage: 128GB, 128GB
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Display: Super AMOLED, 6.5 inches
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Camera: Rear 64 MP+12 MP+5 MP+5 MP, and Front 32 MP
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OS: Android 10, upgradable to Android 12, One UI 4.1
Full Specifications
Price
| Official | 23990 BDT 6GB/128GB Approx. |
General
| Model | Samsung Galaxy M31s |
| Announced | 2020, July 30 |
| Released | 2020, August 06 |
| Status | Available |
Design
| Dimensions | 159.3 x 74.4 x 9.3 mm (6.27 x 2.93 x 0.37 in) |
| Weight | 203 g (7.16 oz) |
| SIM <strong>SIM</strong> (Subscriber Identity Module) is a small card that contains mobile network subscriber's account information. This allows the phone using the card to attach to a mobile network. The SIM card is most commonly associated with GSM and UMTS mobile networks. Moving a SIM card from one phone to another allows a subscriber to switch mobile phones without having to contact their mobile network carrier. SIM cards can also be used by a phone to store limited amounts of data, such as phone numbers and text messages. |
Single SIM (Nano-SIM) or Dual SIM (Nano-SIM, dual stand-by) |
| Colors |
Mirage Black, Mirage Blue |
Display Specification
| Display Type <strong>Display Technology => </strong> A number of display technologies and types used in mobile phones => TFT (Thin Film Transistor), IPS (In-Place Switching), OLED (Organic Light Emitting Diode), AMOLED (Active-Matrix Organic Light-Emitting Diode), Super AMOLED (an even advanced version of AMOLED), Resistive Touchscreen (Resistive touchscreens contain two layer of conductive material with a very small gap between them which acts as a resistance), Capacitive Touchsceen (Capacitive touchscreen technology consists of a layer of glass coated with a transparent conductor) | Super AMOLED |
| Size | 6.5 inches, 102.0 cm2 |
| Resolution | 1080 x 2400 pixels, 20:9 ratio |
| Pixel Density <strong>Pixel Density (PPI)</strong> is refers to the concentration of pixels on a particular display, measured in pixels per inch (ppi). Pixel density is calculated by dividing the diagonal pixel resolution of a display by its diagonal size, higher pixel density better display quality. | 405 ppi density |
| Display Protection <strong>Display Protection => </strong> Gorilla Glass is a special alkali-aluminosilicate glass shield with exceptional damage resistance that helps protect mobile displays from scratches, drops, and bumps of everyday use, It is always better to go for a smartphone with Gorilla Glass for that added protection and peace of mind. | Corning Gorilla Glass 3 |
| Features | 86.1% screen-to-body ratio |
Platform
| Operating System <strong>OS => </strong> Every computer system run on a base software called Operating System (OS). Operating System controls all basic operations of the computer (such as smartphone, PDAs, tablet computers and other handheld devices). The Operating System allows the user to install and run third party applications (apps), apps are used to add new functionality to the device. | Android 10, upgradable to Android 12, One UI 4.1 |
| Chipset <strong>Chipset</strong> is a group of integrated circuits designed to perform one or a more dedicated functions, often with real time computing constraints, Popular smartphones are equipped with more advanced embedded chipsets that can do many different tasks depending on their programming. | Exynos 9611 (10nm) |
| CPU <strong>CPU</strong> (Central Processing Unit) mostly known as processors, CPU processes instructions in order to carry out certain functions that make your device operate properly. Processors are often described as the brain of computers, smartphones and tablets, Smartphones and tablets rely on processors to carry out their every task, Processors are an incredibly important factor in selecting any type of computing device, including your smartphone. | Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53) |
| GPU <strong>GPU</strong> (Graphics Processing Unit) is a single-chip processor designed to rapidly manipulate and alter memory to accelerate the creation of images in a frame buffer intended for output to a display, This includes things such as lighting effects, object transformations, and 3D motion. | Mali-G72 MP3 |
Main Camera
| Camera Setup | Triple |
| Resolution |
64 MP, f/1.8, 26mm (wide), 1/1.73&quot;, 0.8µm, PDAF 12 MP, f/2.2, 123˚ (ultrawide) 5 MP, f/2.4, (macro) 5 MP, f/2.4, (depth) |
| Features |
LED flash, panorama, HDR |
| Video | 4K@30fps, 1080p@30fps, gyro-EIS |
Selfie Camera
| Camera Setup | Single |
| Resolution |
32 MP, f/2.2, 26mm (wide), 1/2.8&quot;, 0.8µm |
| Video | 4K@30fps, 1080p@30fps |
| Features | HDR |
Network & Connectivity
| Technology | GSM / HSPA / LTE |
| Speed | HSPA, LTE-A |
| Wi-fi <strong>Wi-Fi</strong> is a popular wireless networking technology using radio waves to provide high-speed network connections that allows devices to communicate without cords or cables, Wi-Fi is increasingly becoming the preferred mode of internet connectivity all over the world. | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct |
| Bluetooth <strong>Bluetooth</strong> is a wireless communications technology for exchanging data between mobile phones, headsets, computers and other network devices over short distances without wires, Bluetooth technology was primarily designed to support simple wireless networking of personal consumer devices. | 5.0, A2DP, LE |
| NFC <strong>NFC</strong> (Near field communication) is a set of standards for smartphones and similar devices to establish peer-to-peer radio communications with each other by touching them together or bringing them into proximity, usually no more than a few inches. | Yes |
| Positioning |
GPS, GLONASS, GALILEO, BDS |
| FM Radio | Yes |
| USB | USB Type-C 2.0, OTG |
| 2G Network |
GSM 850 / 900 / 1800 / 1900 - SIM 1 &amp; SIM 2 (dual-SIM model only) |
| 3G Network |
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 |
| 4G Network |
1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 26, 28, 38, 40, 41, 66 |
Battery
| Battery Type <strong>Battery Type => </strong> Cell phones run on various kinds of batteries depending on the manufacturer, phone size or shape and features. There are basically four types of cell phone batteries => Lithium Polymer, Lithium Ion, Nickel Metal Hydride and Nickel Cadmium. | Li-Poly (Lithium Polymer) |
| Capacity <strong>Battery Capacity</strong> is a measure (typically in Amp-hr) of the charge stored by the battery, and is determined by the mass of active material contained in the battery. The battery capacity represents the maximum amount of energy that can be extracted from the battery under certain conditions. | 6000 mAh |
| Removable | No |
| Charging |
25W wired 4.5W reverse wired |
| Wireless Charging <strong>Wireless Charging</strong> (Inductive Charging) uses an electromagnetic field to transfer energy between two objects. This is usually done with a charging station. Energy is sent through an inductive coupling to an electrical device, which can then use that energy to charge batteries or run the device. | No |
Multimedia
| Loudspeaker | Yes |
| Audio Jack | Yes |
Storage
| Card Slot <strong>Memory Card Slot</strong> is a special slot for inserting a memory card. Memory cards allow you to expand the phone's built-in memory, A memory card (sometimes called a flash memory card or a storage card) is a small storage medium used to store data such as text, pictures, audio, and video, for use on small, portable or remote computing devices such as mobile phones, mp3 players, digital cameras. | microSDXC (dedicated slot) |
| Internal Storage <strong>Internal Storage</strong> is a data storage space (flash memory) mostly used in smartphones, tablets and other electronic devices where operating system, apps, music, photos, videos, files and other user data Is stored. |
128GB 6GB RAM, 128GB 8GB RAM UFS 2.1 |
Sensors
| Fingerprint | Yes (side-mounted) |
| Other Sensors | accelerometer, gyro, compass, Virtual proximity sensing |
About the Samsung Galaxy M31s
The Samsung Galaxy M31s is a mid-range smartphone that was launched in August 2020 as part of Samsung’s popular M-series lineup. Known for its large battery and Super AMOLED display, the M31s offers great value for money. It features a 6.5-inch Infinity-O Super AMOLED display with Full HD+ resolution, providing vivid colors and sharp visuals. The Exynos 9611 processor powers the phone, paired with 6GB or 8GB of RAM and up to 128GB of internal storage, expandable via microSD.
One of its main highlights is the massive 6000mAh battery, which easily lasts more than a day even with heavy use. It supports 25W fast charging and comes with a fast charger in the box. The M31s also impresses in the camera department, featuring a 64MP quad-camera setup on the back and a 32MP selfie camera, making it a strong choice for content creators and selfie lovers. It runs on Android 10, upgradable to newer versions with Samsung’s One UI.
With its long battery life, great display, and solid cameras, the Galaxy M31s is a great choice for budget-conscious users who want reliable performance for everyday use.
Main Key Features
- Display: 6.5-inch Super AMOLED, Full HD+ (1080 x 2400 pixels)
- Processor: Exynos 9611 (10nm)
- RAM & Storage: 6GB/8GB RAM, 128GB internal storage (expandable)
- Rear Camera: Quad – 64MP (main) + 12MP (ultrawide) + 5MP (macro) + 5MP (depth)
- Front Camera: 32MP
- Battery: 6000mAh with 25W fast charging
- Operating System: Android 10, upgradable
- Other Features: Side-mounted fingerprint sensor, USB Type-C, Gorilla Glass 3 protection
Pros & Cons
Pros
- Super AMOLED display with vibrant colors
- Excellent battery life (6000mAh)
- Good camera performance, especially 64MP main camera
- Decent performance for everyday tasks
- Fast charging supported (25W charger included)
- Expandable storage via microSD
Cons
- Exynos 9611 is slightly outdated for gaming or heavy tasks
- Plastic build may feel less premium
- No high refresh rate display (only 60Hz)
- Slightly bulky due to the large battery
Opinion
The Samsung Galaxy M31s is a solid all-rounder in the budget to mid-range segment. With its vibrant AMOLED display, big battery, and good cameras, it delivers excellent value. While not designed for heavy gaming, it handles daily tasks smoothly and is perfect for media consumption, photography, and long battery life. Great choice for students, casual users, or anyone needing a reliable smartphone without breaking the bank.
See Another Model:
FAQs about Samsung Galaxy M31s
Q: Is the Galaxy M31s good for gaming?
A: It can handle casual games well, but the Exynos 9611 struggles with heavy games at high settings.
Q: Does the phone support fast charging?
A: Yes, it supports 25W fast charging and comes with a fast charger in the box.
Q: Can I expand the storage?
A: Yes, it has a dedicated microSD card slot.
Q: Does it have a fingerprint sensor?
A: Yes, it has a side-mounted fingerprint sensor.
Q: What version of Android does it run?
A: It launched with Android 10 and is upgradable to newer versions via Samsung’s One UI updates.
Q: Is the Galaxy M31s waterproof?
A: No, it does not have any official water or dust resistance rating.
Q: Is it worth buying in 2024/2025?
A: It’s still a good option for basic use, but if you want better performance or 5G, newer models may be better.
