OPPO F31 Series 5G: India Launch, Key Features & What to Expect

OPPO is all set to launch its much-anticipated OPPO F31 Series 5G in India on 15 September 2025 at 12:00 PM IST, marking the next step after the F29 Series.The lineup is being marketed with the tagline “Durable Champion”, underlining its focus on durability, long battery life, and value for mid-range users.

Here’s everything we know so far — specs, pricing expectations, strengths, potential weaknesses, and who this phone is really for.

1. Models, Pricing & Availability

The F31 Series will comprise three models:

• OPPO F31 5G (standard)
• OPPO F31 Pro 5G
• OPPO F31 Pro+ 5G

Expected price ranges in India (leaked/rumoured so far):

• F31 Pro: ~ ₹26,999 for 8 GB + 128 GB. Higher storage variants (256 GB, etc.) somewhat more.
• F31 Pro+: ~ ₹32,999 for 8 GB + 256 GB; ~ ₹34,999 for 12 GB + 256 GB.
• The standard F31 is expected to fall somewhere between ₹20,000 to ₹25,000 depending on configuration.

Sales will begin through OPPO’s official site and select e-commerce platforms in India.

2. Design & Build / Durability Features

One of the biggest differentiators of the F31 Series is how robust it promises to be. Key elements:

• Water, dust resistance: IP69, IP68, and IP66 ratings. This combination means protection from dust, water immersion (under certain conditions), and even high-pressure water jets.
• “360-degree armour body”: Reinforced build, rugged aesthetics, likely reinforced corners.
• MIL-STD-810H certification (military standard) for durability.
• The display glass is expected to be tough — promotional materials and leaks mention AGC DT-Star D+ glass up front.

Colour options are also part of the design appeal:

• F31 standard: Midnight Blue, Cloud Green, Bloom Red.
• Pro / Pro+ may have different finishes (e.g. Gemstone Blue, Desert Gold, etc.) depending on variant.

3. Performance, Chipsets & Display

Chipset:

• The top version (Pro / Pro+) is confirmed to use Snapdragon 7 Gen 3 SoC.
• The Pro model is rumoured to use MediaTek Dimensity 7300 Energy from leaks.
• Standard model likely to have a somewhat lower but still capable chipset (rumours suggest maybe Dimensity series) to meet price point.

Display:

• All models are expected to feature AMOLED displays. The Pro / Pro+ may have larger, higher refresh-rate panels.
• Pro+ possibly has the largest screen in the series, with flatter or slightly curved edges depending on variant.

4. Battery & Charging

A standout spec of the F31 Series is the battery and charging:

• 7000 mAh battery across all models (typical value).
• 80W SuperVOOC™ Flash Charge support. This should allow fast charging, though actual speeds in real-world conditions may vary.
• For cooling and ensuring performance under load (especially while charging or in warm climates): a Vapour Chamber (VC) cooling system is confirmed, with a large area in Pro/Pro+ models (some reports of ~5,219 mm²).

These specs suggest OPPO aims for multi-day battery life plus rapid top-ups, which is appealing for people on the move.

5. Camera Setup

From leaks and OPPO’s microsite:

• Rear cameras: Triple camera setup. The primary sensor is reportedly 50 MP.
• Additional sensors: one depth / mono-lens (2 MP) etc.
• Front camera: Likely 32 MP for selfie / video calls.

Other camera features are less confirmed — rumours mention improved low-light performance, AI camera enhancements, and possibly OIS (optical image stabilization) on higher versions, though OIS has not been fully confirmed in reliable leaks.

6. Other Features of Note

• Connectivity: 5G support is a given for all models.
• Smoothness & benchmarking: OPPO has shared benchmark data. The Snapdragon 7 Gen 3 version scores over ~ 890,000 on AnTuTu.
• Temperature / thermal management: The phones are built to handle heat via the vapour chamber cooling and design. Leaks say performance remains smooth even at ~40 °C.
• IP Ratings & durability: Already covered above, but critical point: triple IP rating (IP69, IP68, IP66) plus military-grade standard. Useful for people needing rugged phones (outdoor work, unpredictable weather, etc.).

7. What Users Should Expect & Where It Might Compete

Given the specs, design, and pricing, the OPPO F31 Series is aiming at the upper mid-range market in India (roughly ₹20,000-₹35,000). Its competition will likely include:

• Other mid-range 5G phones with large batteries (e.g. from Xiaomi/Redmi, Samsung “A-series”, Vivo / iQOO).
• Rugged and durable phones (though few mainstream phones combine ruggedness + fast charging + large battery + good brand support as OPPO seems to be doing).

What will matter in real-life use:

• How heavy the phones are: 7000 mAh batteries plus rugged build tend to add weight. Comfort and handling will matter.
• Charging practical speeds: 80 W is fast, but charging speed drops under warm environment or partial charge states.
• Camera performance: leaks point to good specs, but actual image quality, video stabilization, night photography etc. will determine if the cameras live up to expectations.
• Software support: How many Android / ColorOS version updates, security patches. Leaks say things like 2 years OS updates, 3 years security updates (for some variants) are expected.

8. Launch Day & What To Watch For

On launch day (15 Sept, 12 PM IST), here’s what to keep an eye out for:

• Final confirmed pricing (especially for the standard F31).
• Shipping / availability details (which cities, offline outlets etc.).
• “Launch offers”: often brands pair up with exchange bonuses, bank discounts, etc.
• Hands-on impressions: how do the phones feel in hand; weight, build quality, whether the rugged claims hold up.
• Battery endurance in real usage; how well cooling works under load; and how UI / performance feels over extended use.

9. Pros & Potential Drawbacks

Pros:

• Extremely large battery (7000 mAh) with fast charging, so likely solid battery life.
• Strong durability credentials (IP ratings, rugged build). Good for tough environments.
• Competitive chipsets, especially in Pro / Pro+ versions.
• Likely good resale / brand support given OPPO’s presence in India.

Possible drawbacks / things to watch:

• Weight & thickness: rugged phones + big battery = likely heavier/wider than slim flagships. Might not appeal to users who prefer sleek phones.
• Price vs features trade-off: if the camera or display falls short vs similarly priced rivals, may lose out.
• Heat / charging throttling in warm climates — though cooling systems are claimed, real-world performance will tell.
• Software & long-term support: while leaks mention some numbers, OPPO will have to deliver timely updates to maintain user trust.