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Samsung Galaxy M31
Specifications
Price in Bangladesh
| Official | 8GB 128GB ৳23,999 |
| Unofficial Unofficial prices and phones are available only non authorized shops. The device does not come with an official warranty in Bangladesh. | 6GB 64GB ৳18,000 / 6GB 128GB ৳20,000 |
General
| Device Type | SmartPhone |
| Model | SM-M315F, SM-M315F/DS, SM-M315F/DSN |
| Announced | February, 2025 |
| Released | March, 2025 |
| Status | Available |
Hardware & Software
| Operating System OS => 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 |
| OS Version | v10 |
| User Interface UI or user interface of a device is the look and feel of the on-screen menu system. How it works, its color scheme, how it responds to button presses, all of these things are part of the user interface. | One UI 4.1 |
| Chipset Chipset 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 |
| CPU CPU (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) |
| CPU Cores | 8 Cores |
| Architecture | 64 bit |
| Fabrication | 10 nm |
| GPU GPU (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 |
| RAM (Memory) RAM (Random Access Memory) is a type of computer memory that can be accessed randomly, any byte of memory can be accessed without touching the preceding bytes that allows information to be stored and accessed quickly from random locations. RAM is the most common type of memory found in computer systems, smartphones, tablets and other electronic devices. | 6 GB |
Design
| Dimensions | 159.2 x 75.1 x 8.9 mm (6.27 x 2.96 x 0.35 in) |
| Weight | 191 g (6.74 oz) |
| Colors |
Ocean Blue, Space Black, Red |
| Build Material | Glass front (Gorilla Glass 3), plastic back, plastic frame |
Display
| Display Type Display Technology => 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 | 6.4 inches (100.5 cm2) |
| Resolution | 1080x2340 px |
| Aspect Ratio | 19.5:9 |
| Pixel Density Pixel Density (PPI) 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. | 403 ppi |
| Screen to Body Ratio | 83.92 % |
| Touch Screen | Capacitive Touchscreen, Multi-touch |
| Brightness | 420 nits (peak) |
| Refresh Rate | 60 Hz |
| HDR 10 / HDR+ support |
Rear Camera
| Camera Setup | Quad |
| Main Camera | 64 MP |
| Specifications | f/2.2, (depth) |
| Second Camera | 8 MP |
| Specifications | f/2.2, (depth) |
| Third Camera | 5 MP |
| Specifications | f/2.2, (depth) |
| Fourth Camera | 5 MP |
| Specifications | f/2.2, (depth) |
| Autofocus | Phase Detection autofocus |
| OIS | |
| Flash Flash Light => There is commonly two types of flash lights are used in camera mobile phones, LED Flash (LED flash offers lower power consumption with drive circuitry that takes up very little room, LEDs can be strobed faster than any other light source), Xenon Flash (xenon flash produces an extremely intense full-spectrum white light for a very short duration) | LED Flash |
| Image | 9000 x 7000 Pixels |
| Settings | Exposure compensation, ISO control |
| Zoom | 8 x Digital Zoom |
| Shooting Modes | Continuous Shooting |
| Aperture | f/1.8 |
| Camera Features |
8 x Digital Zoom, Auto Flash, Face detection, Touch to focus |
| Video | 2160p@30fps, 1080p@30fps, gyro-EIS |
| Video Recording Features | 3840x2160, 1920x1080, 1280x720 |
| Video FPS | 300 fps, 60 fps, 240 fps |
Front Camera
| Camera Setup | Single |
| Secondary |
32 MP, f/2.0, 26mm (wide), 1/2.8", 0.8µm |
| Aperture | f/2.0 |
| Camera Features | HDR |
| Video | 1080p@30fps |
| Video FPS | 30 fps |
Battery
| Battery Type Battery Type => 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-Ion (Lithium Ion) |
| Placement | Non-removable |
| Capacity Battery Capacity 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 |
| Quick Charging | 15W wired |
| USB Type-C | USB Type-C 2.0 |
Storage
| Storage Type | UFS 2.1 |
| Storage Capacity | 64 GB, 128 GB |
| USB OTG |
Network
| 2G Network |
GSM 850 / 900 / 1800 / 1900 |
| 3G Network |
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 |
| 4G Network |
1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 26, 28, 38, 40, 41, 66 |
| SIM SIM (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. | Standard SIM |
Data
| GPRS GPRS (General Packet Radio Service) is a packet oriented mobile data service on the 2G and 3G cellular communication system's global system for mobile communications (GSM), Generally, GPRS is used for the purpose of wireless data transfer, such as sharing pictures and videos or browsing the Internet via a mobile phone connection. | |
| EDGE EDGE (Enhanced Data GSM Environment) is a wireless network technology generally considered the next step in the 2G network offers data transfer rates up to four times faster than ordinary GSM networks, Generally, EDGE is used for the purpose of wireless data transfer, such as sharing pictures and videos or browsing the Internet via a mobile phone connection. | |
| Speed | HSPA, LTE |
| Web Browser Web Browser => a web browser is a software application used to locate, retrieve and display content on the World Wide Web, including Web pages, images, video and other files, The primary function of a web browser is to render HTML, the code used to design or markup webpages. | HTML5 |
Messaging
| SMS SMS (Short Messaging Service) is a text messaging service component of phone, Web, or mobile communication systems. It uses standardized communications protocols to allow mobile phone devices to exchange short text messages over the networks. | Yes |
| MMS MMS (Multimedia Messaging Service) is a standard way to send messages that include multimedia content (audio clips, video clips and images) to and from mobile phones over wireless networks using the WAP protocol. | |
| Email Email (Electronic Mail) is a system for receiving, sending, and storing electronic messages, Similar to a letter, email is text messages that may contain files, images, or other attachments sent via the internet to a recipient by using applications and software prograps. An email address is required to receive email, and that address is unique to the user. | Yes |
| IM IM (Instant Messaging) is an exchange of text messages through a software application, it enable you to create a kind of private chat room with another individual in order to communicate in real time over the Internet. | Yes |
Connectivity
| Bluetooth Bluetooth 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 |
| Wi-fi Hotspot | |
| Infrared Infrared connectivity is an old wireless technology used to connect two electronic devices. It uses a beam of infrared light to transmit information and so requires direct line of sight and operates only at close range. | |
| USB | USB Type-C 2.0 |
| GPS GPS The Global Positioning System is a satellite-based radio navigation system, GPS permits users to determine their position, velocity and the time 24 hours a day, in all weather, anywhere in the world, In order to locate your position, your device or GPS receiver must have a clear view of the sky. | GPS, GLONASS, GALILEO, BDS |
| NFC NFC (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. |
Media
| FM Radio | FM radio, RDS, recording |
| Loudspeaker | Yes |
| 3.5mm Jack | Yes |
Sensors & Security
| Fingerprint Sensor | |
| Fingerprint Sensor Position | Rear-mounted |
| Light Sensor | Light sensor, Proximity sensor |
| Face Unlock | Yes |
More
| Made By | Korea |
| SAR | 0.52 W/kg (head) 0.69 W/kg (body) |
| SAR EU | 0.48 W/kg (head) 1.13 W/kg (body) |
Performance Tests
PROS
- Large 6000mAh battery with long endurance
- Sharp and bright 6.4-inch Super AMOLED display
- Versatile quad-camera system with 64MP main sensor
- Expandable storage via microSD card
- Smooth performance with Exynos 9611 chipset
- Rear fingerprint sensor and face unlock security
- NFC support for convenient payments
CONS
- No 5G support, limited to 4G LTE
- 60Hz refresh rate is standard, not high refresh rate
- Plastic back may feel less premium than glass
- Charging speed limited to 15W fast charging
- Runs Android 10 out of the box, may require updates for newer versions
Samsung Galaxy M31 Price in Bangladesh
The Samsung Galaxy M31 is available in Bangladesh at an official price of ৳23,999 for the 8GB RAM and 128GB storage variant. Unofficially, you can find the 6GB RAM variants at approximately ৳18,000 for 64GB storage and ৳20,000 for 128GB storage.
This mid-range smartphone stands out with its impressive 6,000mAh battery, a vibrant 6.4-inch Super AMOLED display, and a versatile quad-camera setup featuring a 64MP main sensor. Powered by the Exynos 9611 chipset and equipped with ample RAM, the Galaxy M31 delivers a smooth experience for everyday tasks and moderate gaming. Its competitive price point and robust specs make it an attractive option for budget-conscious users who want a reliable and feature-packed device.
Price & Variants
| RAM & Storage | Price (BDT) | Status |
|---|---|---|
| 6GB 64GB | ৳18,000 | Unofficial |
| 6GB 128GB | ৳20,000 | Unofficial |
| 8GB 128GB | ৳23,999 | Official |
Samsung Galaxy M31 Specifications
The Samsung Galaxy M31 is a mid-range smartphone released in March 2020, featuring a large battery and a bright AMOLED display, designed to offer great value in its segment.
| Feature | Details |
|---|---|
| Model Name | Samsung Galaxy M31 (SM-M315F, SM-M315F/DS, SM-M315F/DSN) |
| Release Date | March 2020 |
| Market Availability | Available |
| Official Price | ৳23,999 (8GB/128GB) |
| RAM & Storage | 6GB/64GB, 6GB/128GB (Unofficial), 8GB/128GB (Official) |
Display and Design
The Galaxy M31 sports a 6.4-inch Super AMOLED display with a Full HD+ resolution of 1080 x 2340 pixels, providing sharp visuals and vibrant colors. The 19.5:9 aspect ratio and 403 ppi pixel density offer an immersive viewing experience. While it has a standard 60Hz refresh rate, the screen supports HDR10 for enhanced contrast and color accuracy.
In terms of design, the phone features a Gorilla Glass 3-protected glass front, complemented by a plastic back and frame, striking a balance between durability and weight. Measuring 159.2 x 75.1 x 8.9 mm and weighing 191 grams, it offers a solid feel in hand. Available in Ocean Blue, Space Black, and Red, the Galaxy M31 sports a modern and stylish look.
Performance and Processor
Powered by Samsung’s in-house Exynos 9611 chipset built on a 10nm process, the Galaxy M31 delivers reliable mid-range performance. The octa-core CPU consists of four Cortex-A73 cores clocked at 2.3 GHz for demanding tasks, alongside four power-efficient Cortex-A53 cores at 1.7 GHz. The Mali-G72 MP3 GPU supports smooth graphics rendering for casual gaming.
With RAM options of 6GB and 8GB and UFS 2.1 storage (64GB or 128GB), the device handles multitasking and storage needs efficiently. Plus, the storage is expandable via microSD, making it versatile for users with large media libraries. Overall, the phone manages day-to-day usage, social media, and light gaming without much lag.
Camera and Video
Samsung’s Galaxy M31 boasts a versatile quad-camera array on the back:
- Main Camera: 64MP, f/1.8 aperture, Phase Detection Autofocus (PDAF)
- Ultrawide: 8MP, f/2.2
- Macro: 5MP, f/2.2
- Depth sensor: 5MP, f/2.2
The setup is supported by an LED flash and offers features like 8x digital zoom, face detection, and touch-to-focus. The phone records 4K video at 30fps and supports gyro-EIS for video stabilization.
On the front, there’s a single 32MP camera with an f/2.0 aperture that delivers crisp selfies and supports 1080p video recording at 30fps. The camera performance is excellent for its class, especially in well-lit environments, with added night mode and AI enhancements improving low-light shots.
Battery and Charging
One of the Galaxy M31’s strongest points is its massive 6000mAh Li-Ion battery, designed to last through heavy usage and multiple days on a single charge. It supports 15W wired fast charging via USB Type-C, which is decent for a battery of this size but not the fastest in the segment.
The battery life is impressive, making this model ideal for users prioritizing longevity and endurance without frequent recharging.
Connectivity and 5G Support
The Galaxy M31 supports a wide range of 2G, 3G, and 4G LTE bands but does not support 5G connectivity. It offers dual SIM functionality with a dedicated SIM slot configuration.
Connectivity features include Bluetooth 5.0, Wi-Fi hotspot capability, USB Type-C 2.0, GPS with GLONASS, GALILEO, and BDS support, NFC, and a 3.5mm headphone jack. The inclusion of NFC is a plus for contactless payments and quick data transfers.
Additional Features
The phone runs on Android 10 with Samsung’s One UI 4.1, providing a smooth and user-friendly interface. It houses a rear-mounted fingerprint sensor for secure unlocking, complemented by face unlock technology for added convenience.
Other notable features include FM radio with RDS and recording, stereo speakers, and a light and proximity sensor. The device lacks water resistance certification but compensates with a solid build quality and reliable performance.
Reason to Buy
- Massive 6000mAh battery ensuring extended usage without frequent charging
- Vibrant 6.4-inch Super AMOLED display with Full HD+ resolution and HDR10 support
- Versatile quad-camera setup with 64MP main sensor for high-quality photos and videos
- Affordable price with good RAM and storage options, plus expandable memory
- Reliable Exynos 9611 chipset for smooth everyday performance
- Rear fingerprint sensor and face unlock for enhanced security and convenience
- NFC support for contactless payments
Verdict
The Samsung Galaxy M31 is an excellent mid-range smartphone that balances performance, battery life, and camera quality at a budget-friendly price. Its standout feature is the massive 6000mAh battery, which is ideal for users who need long-lasting power. The Super AMOLED display and versatile camera array further elevate its appeal, making it a solid choice for photography enthusiasts and media consumers alike. While it lacks 5G, its comprehensive 4G support and balanced hardware make it a worthy option for those seeking value without compromising core features.
FAQ
Q: Does the Samsung Galaxy M31 support 5G?
A: No, the Galaxy M31 supports up to 4G LTE but does not have 5G connectivity.
Q: Is the storage expandable on the Galaxy M31?
A: Yes, the phone supports microSD card expansion, allowing you to increase storage beyond the built-in capacity.
Q: What version of Android does the Galaxy M31 run?
A: It comes with Android 10 and Samsung’s One UI 4.1 skin.
Q: How good is the battery life of the Galaxy M31?
A: The 6000mAh battery offers excellent endurance, typically lasting more than a day under heavy use.
Q: Does the phone have a fingerprint sensor?
A: Yes, it has a rear-mounted fingerprint sensor and supports face unlock.
Alternatives to Samsung Galaxy M31
- Samsung Galaxy M32 (2021): Offers a similar design with a 90Hz AMOLED display and improved battery charging speed.
- Realme Narzo 30 Pro 5G: Includes 5G support and a more powerful MediaTek Dimensity 800U chipset.
- Redmi Note 10: Comes with AMOLED display and Snapdragon 678 chipset with similar camera capabilities.
- Samsung Galaxy A32 5G: Provides 5G connectivity with a bigger display and decent battery life.
User Reviews
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