Oppo F31 Series Official Specs: Big Battery, Rugged Build, and Flagship Performance

Oppo has now officially confirmed the core specifications of its highly anticipated F31 series, set to debut on September 15. The lineup – consisting of the F31, F31 Pro, and F31 Pro+ – appears to be a bold statement from the brand, targeting both performance enthusiasts and durability-focused users. The most striking detail is the massive 7,000mAh battery included across all three models, coupled with 80W SuperVOOC fast charging.

Oppo also reassured buyers that these batteries are rated for 1,830 charge cycles, which translates to around five years of daily use – a crucial advantage for those who hold on to their phones long-term.

Durability is another cornerstone of the F31 series. Oppo is providing a rare triple ingress protection rating: IP69, IP68, and IP66, offering defense against water jets, submersion, and dust exposure. Paired with a 360° Armour Body design and enhanced shock absorption, this marks one of the most rugged F-series devices to date.

Performance-wise, the F31 Pro+ is clearly the flagship, powered by Qualcomm’s Snapdragon 7 Gen 3 chipset, backed by 12GB RAM and UFS 3.1 storage. To tackle heat under heavy loads, the phone integrates a 5,219 mm² vapor chamber for advanced thermal management. Meanwhile, the F31 Pro is expected to feature MediaTek’s Dimensity 7300 chip, and the standard F31 will likely use a Dimensity 6300 – giving buyers multiple tiers of performance depending on budget.

What adds nuance to the discussion is how this lineup compares with rivals. Some users point out that while Oppo has worked hard on battery endurance and durability, competitors like Realme and Vivo offer different trade-offs. For instance, Realme’s recent A6 Pro was criticized for its thick bezels, and some expect the F31 to improve the screen-to-body ratio. However, there’s also a sense of skepticism: as long as Oppo’s F series mirrors the Chinese A series with minimal changes, some argue that the uniqueness of the F series is questionable. Vivo’s older V series, for example, offered more compelling ultrawide cameras than the basic 8MP units Oppo often includes.

Still, the F31 range positions itself as a practical choice for those prioritizing power longevity, ruggedness, and balanced performance. Whether that’s enough to challenge the growing competition from Realme, Vivo, and others remains to be seen, but Oppo seems confident its focus on durability and battery innovation will win fans over.