Oppo F31 5G
Full Specifications
Price in BD
| Unofficial | 8GB+128GB (IN) - 31,500 TK |
General Info
| Announced | 15 September, 2025 |
| Status | Available |
| Released | 15 September, 2025 |
| Brand | Oppo |
| Model | F31 5G |
| Made By | China |
Network
| Technology | GSM / HSPA / LTE / 5G |
| 2G bands | GSM 850 / 900 / 1800 / 1900 |
| 3G bands | HSDPA 900 / 2100 |
| 4G bands | 1, 3, 5, 8, 28, 40, 41 |
| 5G bands | 1, 3, 5, 8, 28, 40, 41, 77, 78 SA/NSA |
| VoLTE | |
| Speed | HSPA, LTE, 5G |
Body
| Dimensions | 158.2 x 75 mm |
| Thickness | 8 mm |
| Weight | 185g |
| SIM Slot | Dual SIM |
| 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. | Nano-SIM + Nano-SIM |
| Build | Glass front (Gorilla Glass 7i), fiber fabric back or fiberglass back |
| Colors | Cloud Green, Midnight Blue, Bloom Red |
| IP Rating | IP69 + IP68 + IP66 Water and Dust Resistance |
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) | AMOLED |
| Size | 6.57 inches |
| Screen to Body | ~93% |
| Features | 1B colors, FHD+ |
| Brightness | 600 nits (typ), 1400 nits (HBM) |
| Refresh Rate | 120Hz |
| Resolution | 1080 x 2372 pixels |
| 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. | ~397 ppi |
| Protection | AGC DT-Star D+ |
| Bezel-less | Yes with punch-hole display |
| Touch Screen | Capacitive Touchscreen, Multi-touch |
Performance
| 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. | MediaTek Dimensity 6300 |
| Fabrication | 4 nm |
| 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 (2 Arm A76 2.4G, 6 Arm A55 2.0GHz) |
| CPU Cores | 8 cores |
| 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-G57 MC2@1072MHz |
| Architecture | 64-bit |
| OS | Android 15 |
| UI | ColorOS 15.0 |
Memory
| RAM 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. | 8 GB |
| RAM Type | LPDDR4X |
| ROM | 128 GB |
| Card Slot Memory Card Slot 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. | Yes, microSDXC |
| UFS | 2.2 |
Main Camera
| Dual |
50 MP, f/1.8, 27mm (wide), FOV 76°; 5P lens; AF 2 MP, f/2.4; FOV 89°; 3P lens |
| OIS | No |
| Features | Photo, Video, Portrait, Night, Panorama, SLO-MO, Dual-view video, TIME-LAPSE, STICKER, HI-RES, Google Lens, Underwater, PRO, DOC SCANNER |
| 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 |
| Video Recording | 1080p@30/60fps, 720p@30/60/120fps |
| Autofocus | |
| Settings | Exposure compensation, ISO control |
| Zoom | 10x digital zoom |
Selfie Camera
| Single | 16MP; f/2.4; FOV 85°; 4P lens |
| Features | Photo, Video, Portrait, Night, Panorama, Dual-view video, TIME-LAPSE, STICKER, Screen Fill Light, HI-RES |
| Video Recording | 1080p@30fps, 720p@30fps |
Sound
| Loudspeaker | |
| 3.5mm jack | |
| Others | with stereo speakers |
Connectivity
| WLAN Wi-Fi 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/6, dual-band |
| 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. | 5.4, SBC, AAC, LDAC, aptX, aptX HD |
| Positioning | GPS, GLONASS, Galileo, QZSS |
| 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. | |
| 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. | |
| Radio | |
| USB | Type-C 2.0, OTG |
Sensors
| Sensors Sensors are electronic components that detects and responds to some type of input from the physical environment. The specific input could be light, heat, motion, moisture, pressure and location, The output is generally a signal that is converted to use in computing systems, a location sensor, such as a GPS receiver is able to detect current location of your electronic device. | accelerometer, gyro, proximity, compass |
| Fingerprint | Under display, optical |
| Face Unlock | Yes |
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. | Si/C Li-Ion |
| 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. | 7000 mAh |
| Charging | 80W wired, PD |
| Reverse | 67W and below SUPERVOOC, 33W PPS, 13.5W PD |
Tests
PROS
- Display: AMOLED, 1B colors, 120Hz
- Chip: MediaTek Dimensity 6300
- Video 4K@30fps
- Infrared port Supported
CONS
- Card slot Not Support
- No 3.5mm jack
- No FM Radio, NFC
Oppo F31 5G Price in Bangladesh
Oppo F31 5G is now available in India variants 8GB+128GB. Now, Oppo F31 5G’s Unofficial Price is 31,500 Taka in Bangladesh.
Oppo F31 5G Overview
The Oppo F31 5G was officially announced and released on 15 September 2025, delivering an impressive mix of performance, durability, and modern features at an affordable price point. It is powered by the MediaTek Dimensity 6300 chipset built on a 4nm process, paired with 8GB LPDDR4X RAM and 128GB UFS 2.2 storage. Unlike some higher models, it also supports microSDXC expansion, which is great for users who want more storage flexibility. Running on Android 15 with ColorOS 15.0, it ensures smooth multitasking, gaming, and daily use.
In terms of design, the Oppo F31 5G comes with a glass front protected by Gorilla Glass 7i and a fiber fabric/fiberglass back, making it both stylish and durable. The phone is lightweight at 185g with a thickness of just 8mm, making it comfortable to hold. Available in Cloud Green, Midnight Blue, and Bloom Red, it offers a premium look at a mid-range price. One of its most impressive features is its IP69 + IP68 + IP66 certification, which provides advanced water and dust resistance — a rarity in this price segment.
The display is a 6.57-inch AMOLED panel with FHD+ resolution (1080 x 2372 pixels), 120Hz refresh rate, and support for 1 billion colors. With up to 1400 nits peak brightness, the screen remains vivid and clear even outdoors. Its ~93% screen-to-body ratio with a punch-hole design provides an immersive viewing experience. This makes it a great choice for streaming, gaming, and everyday browsing.
When it comes to cameras, the Oppo F31 5G sports a dual rear camera setup: a 50MP wide primary sensor with autofocus and a 2MP depth sensor. It supports features like portrait, night mode, dual-view video, underwater photography, and Google Lens. Video recording is limited to 1080p at 60fps, but the clarity and stabilization remain reliable. On the front, it has a 16MP selfie camera with screen fill light for better low-light shots. The selfie camera supports 1080p video recording, making it ideal for video calls and social media.
Powering the phone is a massive 7000mAh Si/C Li-Ion battery, one of the largest in its class. It supports 80W wired fast charging (PD), along with reverse charging (up to 67W SUPERVOOC, 33W PPS, 13.5W PD), allowing it to charge other devices. Combined with efficient hardware, this ensures outstanding battery life for power users, gamers, and travelers.
The Oppo F31 5G also delivers in terms of sound and connectivity. It has stereo speakers but no 3.5mm headphone jack. Connectivity options include Wi-Fi 6, Bluetooth 5.4 (with aptX, aptX HD, and LDAC support), GPS, GLONASS, Galileo, and QZSS. For security, it comes with an under-display fingerprint scanner and face unlock. With this feature set, it positions itself as a competitive mid-range 5G smartphone in 2025.
What is the price of Oppo F31 5G in Bangladesh?
The unofficial price of Oppo F31 5G in Bangladesh is 31,500 BDT for the 8GB + 128GB variant.
Does Oppo F31 5G support 5G networks?
Yes, it supports multiple 5G bands (1, 3, 5, 8, 28, 40, 41, 77, 78 SA/NSA) for high-speed connectivity.
How good is the Oppo F31 5G camera?
It has a 50MP + 2MP dual rear camera and a 16MP front camera, capable of capturing clear photos and 1080p videos with useful modes like night, portrait, and dual-view video
How long does the battery last on Oppo F31 5G?
With a 7000mAh battery and 80W fast charging, it offers excellent screen-on time and can last well beyond a day for heavy users.
Is Oppo F31 5G waterproof?
Yes, it has IP69, IP68, and IP66 certifications, providing strong water and dust resistance
Does Oppo F31 5G have expandable storage?
Yes, unlike the Pro version, the Oppo F31 5G supports microSDXC expansion for additional storage.
Why should you buy this Oppo F31 5G phone?
If you are looking for a budget-friendly 5G smartphone with a huge 7000mAh battery, premium AMOLED display, expandable storage, and IP-certified durability, the Oppo F31 5G is an excellent choice. It balances performance, design, and practicality without breaking the bank.
| Model | : | F31 5G |
| Released | : | 15 September, 2025 |
| RAM | : | 8 GB |
| ROM | : | 128 GB |
| Price | : | 31,500 |
Our Verdict on the 15 September, 2025
The Oppo F31 5G is a value-packed smartphone for mid-range buyers. While it doesn’t offer 4K video recording or OIS like its Pro sibling, it makes up for it with a large battery, expandable storage, stunning display, and durable build quality. For users in Bangladesh, its price of 31,500 BDT makes it a very attractive option in 2025.
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