Oppo F31 5G review
The F31 5G suits people who value battery endurance, bright displays, and waterproofing over gaming chops and cutting-edge specs. Skip it if mobile gaming, video editing, or a 1440p screen are non-negotiable.
This review is written with AI assistance from Oppo’s published specifications and public benchmark data for the Oppo F31 5G, and the rating is spec-based. GoSolo does not physically test devices; where we estimate real-world behaviour such as battery life or charge time, we say so. How we rate phones.
Overview
The Oppo F31 5G pairs a solid mid-range chipset with a large, bright AMOLED display and a 7000mAh battery, making it a reliable pick for everyday use and media consumption. Its real strength is battery life and screen quality; the Dimensity 6300 keeps gaming and heavy multitasking off the table, but most users won't notice.
Design & Build
At 185g and just 8mm thick, the F31 5G feels balanced and pocketable, though the weight sits toward the heavier end for its screen size. The IP68/IP69 rating with MIL-STD-810H compliance is the real standout here—it is genuinely rare to see waterproofing this robust on a phone under ₹27,000. You can submerge it to 1.5 metres for 30 minutes, and the high-pressure jet rating means it survives splashes during a rainstorm without flinching. Oppo ships it in three colours: Midnight Blue, Bloom Red, and Cloud Green. The Dragontrail DT-Star glass is good against scratches and accidental drops, though not quite as shock-resistant as Gorilla Glass found on pricier rivals. Dual nano-SIMs and the microSD slot are both present, so you have flexibility on connectivity and storage.
Display
The 6.57-inch AMOLED screen is the F31 5G's calling card. 120Hz scrolling feels smooth, 1400 nits of peak brightness (HBM mode) makes it genuinely readable in direct sunlight without the screen turning into a mirror, and the 1B color depth delivers vibrant film and photo viewing. The 1080 x 2372 resolution and 397ppi density are sharp enough at arm's length, though side-by-side with a 1440p phone at this size, text and icons do appear slightly softer. The screen-to-body ratio of 88.5% is typical for 2025; bezels are minimal but not vanishing. For a mid-range phone, this is a screen you will not regret staring at for hours.
Performance
The Mediatek Dimensity 6300 is the entry-level workhorse of the mid-range. It handles apps, messaging, social media, and light web browsing without stumbling, and everyday multitasking is smooth. Gaming is where it hits its ceiling—demanding titles like Genshin Impact or Call of Duty Mobile run, but at reduced graphics settings and inconsistent frame rates. Sustained loads (video editing, file compression, large app installs) will warm the phone noticeably. The 8GB RAM and UFS 2.2 storage help here, keeping app switching responsive and file transfers quick, but the GPU (Mali-G57 MC2) is simply not built for high-end gaming. For most users—students, office workers, casual gamers—this is perfectly adequate. Power users and mobile gamers should look at a Dimensity 7000-series or better.
Software
ColorOS 15 on top of Android 15 is Oppo's take on user interface. The OS is responsive and reasonably clean, with sensible gesture controls and customization options. Oppo historically includes more preinstalled apps than stock Android, which can feel cluttered, but removable ones can be uninstalled. Update track record for mid-range Oppo phones is decent—typically two to three years of OS updates and security patches, though not as long as Samsung or Google flagships. Nothing here feels broken, and nothing stands out as extraordinary either.
Camera
The 50MP f/1.8 main camera with PDAF is a solid foundation for midday photography and well-lit scenes. Colours are punchy, and the fast aperture helps in moderately dim light. The real limitation is the lack of an ultrawide or telephoto—everything is framed through the main lens, so you either step back or crop in post. Low-light performance is honest but not exceptional; shadow detail fades faster than phones with larger sensors or better night modes. The 16MP f/2.4 selfie camera is unremarkable but fine for video calls and casual shots. Video tops out at 1080p at up to 120fps, which is adequate but unambitious for 2025. You get LED flash, HDR, and panorama on the main camera, but no dedicated portrait mode or AI scene detection. This is a camera that works, not one that excels—it suits everyday snaps and social media, not serious photography.
Battery & Charging
The 7000mAh battery is one of the F31 5G's genuine strengths. With moderate use (messaging, social media, browsing, some video), you will easily clear a full day without charging. Heavy video streaming or gaming drains it faster, but even then, you are looking at a full work day. The real convenience is the 80W SuperVOOC charging: from flat to full in under 45 minutes is rapid for this price. A quick 15-minute charge in the morning can get you through the afternoon if you start the day low. The charging speed puts rivals at this price point to shame—many still top out at 65W or 33W. The phone supports 5G connectivity, so simultaneous 5G usage and fast charging will create some thermal pressure, but nothing alarming for daily use.
Value & Verdict
At ₹26,498, the F31 5G is not the cheapest option in the mid-range, but it justifies that price with a bright, large display, reliable day-plus battery life, and practical waterproofing. The Dimensity 6300 is the trade-off—it keeps gaming and heavy work off the table. For someone who scrolls social media, watches videos, takes casual photos, and wants a phone that lasts through a full day without worrying about water damage, this makes sense. If you game seriously or do photo editing regularly, save for a Dimensity 7000-series variant or look at the Poco or Realme equivalents, which sometimes offer more power for the same money. The 1080p screen is adequate but not a standout against 1440p competition emerging at similar prices.
Verdict
The F31 5G suits people who value battery endurance, bright displays, and waterproofing over gaming chops and cutting-edge specs. Skip it if mobile gaming, video editing, or a 1440p screen are non-negotiable.
- Large 6.57-inch AMOLED screen at 120Hz with 1400 nits peak brightness—sharp, smooth, and genuinely readable in sunlight without the colours washing out
- 80W SuperVOOC charging fills the 7000mAh battery in under 45 minutes, and realistic screen-on time stretches past a full day on moderate use
- IP68/IP69 rating with MIL-STD-810H compliance is rare for this price tier; waterproofing and dust sealing actually matter if you work outdoors or near water
- UFS 2.2 storage with microSD expansion keeps apps and files snappy without forcing cloud dependency for large libraries
- Dimensity 6300 is entry-level for gaming and sustained heavy multitasking—3D games stutter at high settings, and long video editing sessions will feel sluggish
- 1080p resolution at 6.57 inches is soft when you look closely; rivals at this price now push 1440p or close to it
- 50MP main camera with no ultrawide or telephoto means you are framing shots within the wide lens alone, and low-light detail is average for the segment
Oppo F31 5G Key Specifications
The essentials at a glance. See the full spec sheet.
| Released | 2025, September 17 |
|---|---|
| Display | 6.57 inches, 105.0 cm2 (~88.5% screen-to-body ratio), AMOLED, 1B colors, 120Hz, 600 nits (typ), 1400 nits (HBM) |
| Resolution | 1080 x 2372 pixels (~397 ppi density) |
| Chipset | Mediatek Dimensity 6300 (6 nm) |
| RAM & storage | 128GB 8GB RAM, 256GB 8GB RAM |
| Main camera | 50 MP, f/1.8, (wide), PDAF Auxiliary lens |
| Selfie camera | 16 MP, f/2.4, (wide) |
| Battery | 7000 mAh |
| Charging | SuperVOOC up to 80 W |
| Software | Android 15, ColorOS 15 |
| Dimensions | 158.2 x 75 x 8 mm (6.23 x 2.95 x 0.31 in) |
| Weight | 185 g (6.53 oz) |
| Durability | IP68/IP69 dust tight and water resistant (high pressure water jets; immersible up to 1.5m for 30 min) MIL-STD-810H compliant* * does not guarantee ruggedness or use in extreme conditions |
| Network | GSM / HSPA / LTE / 5G |
| NFC | No |
| USB | USB Type-C 2.0, OTG |
Oppo F31 5G FAQ
Common questions, answered from the spec sheet.
Does the F31 5G support 5G?
Yes. The F31 5G supports 5G networks.
What chipset does the F31 5G use?
The F31 5G runs on the Mediatek Dimensity 6300 (6 nm).
What display does the F31 5G have?
A 6.57 inches, 105.0 cm2 (~88.5% screen-to-body ratio) AMOLED, 1B colors, 120Hz, 600 nits (typ), 1400 nits (HBM), 1080 x 2372 pixels (~397 ppi density).
How big is the F31 5G battery?
The F31 5G has a 7000 mAh battery. Charging is rated at SuperVOOC up to 80 W.
Does the F31 5G have NFC?
No, the F31 5G does not list NFC support.
Is the F31 5G water resistant?
The F31 5G carries a IP68/IP69 dust tight and water resistant (high pressure water jets; immersible up to 1.5m for 30 min) MIL-STD-810H compliant* * does not guarantee ruggedness or use in extreme conditions rating.
Does the F31 5G support a microSD card?
Yes, the F31 5G supports expandable storage (microSDXC).
Alternatives to consider
If the F31 5G isn’t quite right, these are the closest calls.
F29 5G
A5 5G
A6 Pro 5G
A5 Pro 5G
N6
