Oppo has been gradually increasing its foothold in the budget and mid-range segment of the smartphone market in India. Its recent release of the Oppo F31 5G on September 15, 2025, is another stride in this direction. With the focus on battery life, performance, and build quality as a dependable and rugged smartphone, the F31 base model is for users who require a useful phone at an affordable price.
In this review, we’ll take an in-depth look at the Oppo F31 5G—its design, performance, camera setup, battery life, and whether it offers the right value for the ₹25,990 price tag.
Design and Build—Built to Withstand the Toughest Environments
One of the key highlights of the Oppo F31 5G is its durability. Unlike many mid-range smartphones, Oppo has equipped the F31 with multiple industry-leading durability certifications:
- Water and dust resistant with IP68, IP66, and IP69
- 360° shock-absorbing “airbag” design and aluminum frame reinforced for added strength.
This is ideal for outdoor users, field workers, or those accident-prone or exposed to rough handling. Whether you end up dropping it, soaking it in heavy rain, or using it in dusty environments, the F31 is tough enough to withstand it.
The phone boasts a 6.57-inch AMOLED screen with a refresh rate of 120 Hz. The AMOLED display brings out colors as vivid as they are, high contrast, and very bright screens that offer a peak brightness of 1400 nits. This provides brilliant visibility even in broad daylight. The look is minimalist and elegant, with a great grip given its sturdy make.
Performance—Solid Hardware at a Good Price
Under the bonnet, the Oppo F31 5G is fueled by the MediaTek Dimensity 6300 Energy processor, supported by 8GB LPDDR4X RAM and 128GB internal storage. This combination is adequate for day-to-day tasks such as social media surfing, video streaming, and casual games.
As far as multitasking is concerned, the 8GB of RAM guarantees that applications stay open in the background without slowing down the device. The 128GB storage provides adequate space for photos, apps, and documents, although you might need to install a microSD card for large media storage.
While the Dimensity 6300 is not the strongest chip in its segment, it gets a good balance of energy efficiency and performance and thus is fit for most mid-range users.
Camera – Good Photography for Basic Use
For photography, the Oppo F31 is furnished with a 50MP main rear sensor that features Optical Image Stabilization (OIS) to minimize blur in low-light images. There is also a 2MP depth camera and a 2MP monochrome lens that maximize portrait shots and enhance black-and-white photography.
The 16MP front-facing camera manages selfies and video calls well, and it produces sharp images with good color rendition.
Though it cannot compete with flagship devices in photography, the F31’s camera system is more than adequate for social media sharing and casual photography tasks, given its price tag.
Battery – Enormous 7000mAh with Fast Charging
One of the standout features of the Oppo F31 is its 7000 mAh battery. Everyday usage: this huge—enormous 7000 mAh—means you don’t have to worry about losing juice in between, even if you’re using the device outdoors for an extended period of time. Whether you’re watching videos, gaming, or typing away on the go, the F31 provides great battery life.
To go with this, Oppo adds 80W SuperVOOC fast charging support. This lets you charge the huge battery in a hurry, saving time and making it convenient for active users.
Software—Clean and User-Friendly Experience
The Oppo F31 5G operates on Android v15 with ColorOS layered on top. ColorOS is well-optimized and presents helpful options like system-wide dark mode, app cloner, and security features.
The performance is seamless and intuitive, and there is a relatively low amount of bloatware compared to other mid-range offerings. Regular updates are anticipated to keep the device secure and add new features in the long run.
Pricing and Variants
The standard variant of the Oppo F31 5G features 8GB RAM and 128GB storage, retailing around ₹25,990 in India. This is a competitive offering compared to offerings from brands such as Realme, iQOO, and Xiaomi.
If you’re considering a slightly higher specification, Oppo also offers:
- Oppo F31 Pro 5G ₹26,999 – ₹30,999
- Oppo F31 Pro+ 5G ₹32,999
These higher variants offer better front cameras, more RAM, and slightly more powerful processors, but the base Oppo F31 strikes a strong balance for most users.
Pros and Cons
Pros:
- Rugged build with multiple IP ratings and shock-absorbing design.
- Massive 7000mAh battery with 80W fast charging.
- Smooth performance for everyday tasks.
- 120Hz refresh rate AMOLED display.
- Average camera system for the price.
- Affordable pricing.
Cons:
- Mid-range Dimensity 6300 chipset that is not ideal for heavy gaming.
- Depth and monochrome sensors seem to be added accessories with minimal utility in the real world.
- No high-end features such as wireless charging or enhanced biometrics.
Oppo F31 5G is ideal for:
Outdoor workers and thrill-seekers who require a tough and dependable device.
Typical smartphone consumers are looking for seamless performance, good battery life, and satisfactory cameras without breaking the bank.
Professionals who work outdoors and require IP-proofing and battery life that lasts a long time.
If you do not need flagship performance or the newest camera features, the Oppo F31 is a great option, offering good all-around value in the mid-range category.
Final Verdict
The Oppo F31 base model is remarkable in its durability, stunning battery life, and excellent performance for the money. It doesn’t seek to match the top-end phones, but it doesn’t have to. Its durability and sensible hardware make it an ideal sidekick for regular users and professionals who value reliability.
At a price of ₹25,990, this is one of the best choices out there for anyone seeking a functional, long-lasting, and feature-loaded smartphone in India’s budget-to-mid-range market.
