Oppo Reno 13 FS: Dominating the Mid-Range Battery Game

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The Oppo Reno 13 FS is a well-rounded mid-range smartphone that leans heavily into battery endurance, stylish design, and durability.

With a large 5,800mAh battery that comfortably stretches into two-day territory, a bright and vibrant AMOLED display, and IP69-rated water resistance, it’s an appealing choice for users who prioritize longevity and everyday usability over sheer power.

While its Snapdragon 6 Gen 1 chipset is outperformed by rivals such as the Poco X7 or Galaxy A36, it remains competent for general tasks, aided by a generous 12GB RAM and 512GB of storage. Oppo’s ColorOS 15 is packed with useful AI features and long-term update support, although the inclusion of unnecessary bloatware and a junk-filled App Market detracts from the user experience.

The triple camera system is decent but nothing special, with the 50Mp main shooter delivering solid results and the 2Mp macro offering limited value. If you’re after the fastest phone for your money, you’ll find better options.

But if battery life, a refined design, and durability matter most, the Reno 13 FS delivers a satisfying and dependable package.

Design & Build

• Slim and lightweight frame with a matt-finish plastic back
• IP69-rated water and dust resistance adds rare durability
• Simple, attractive look in three color options

At just 192g and 7.8mm thick, the Reno 13 FS is one of the most manageable mid-range phones. The matt plastic finish gives it a fingerprint-resistant surface and light, modern feel – especially in the “Plume Purple” colorway, which subtly shifts under light.

My handset came in black, which I also quite liked – it looks rather smart. Though clearly not glass or metal, the plastic doesn’t feel cheap, and it helps keep the phone’s weight down.

Connor Jewiss / Foundry

Durability is a genuine strong point here. With an IP69 rating, the Reno 13 FS exceeds most rivals when it comes to water and dust protection. That makes it one of the only phones at this price with enough resistance to survive rain, splashes, quick underwater shots, or even hot water jets.

The buttons are satisfyingly clicky and placed within easy reach on the right side, while the under-display optical fingerprint sensor is quick and mostly reliable, if not as consistent as ultrasonic solutions seen in pricier phones such as the Galaxy S25 series.

Connor Jewiss / Foundry

One thing that I did notice immediately is that the vibration motor is terrible – it feels extremely finicky.

Screen & Speakers

• Bright, colorful 6.67-inch AMOLED display
• 120Hz refresh rate keeps UI and animations smooth
• Stereo speakers sound fine, but lack punch and separation

The 6.67-inch AMOLED panel on the Reno 13 FS is a definite highlight. With a resolution of 2400×1080 and support for HDR10+, colors are rich and black levels are deep, giving Netflix or YouTube content that extra pop. Indoors or outdoors, the screen holds up well, even in bright conditions. It could be brighter – other mid-range smartphones I’ve used are – but it’ll more than get you by in most situations.

Connor Jewiss / Foundry

Scrolling is fluid thanks to the 120Hz refresh rate, which also helps gaming and general navigation feel slick. I’m glad to see such a high refresh rate, as some mid-rangers max out at 90Hz, even in 2025. There’s no adaptive refresh rate here though, so the phone won’t scale down to conserve battery as flagship models do.

Audio quality from the inbuilt speakers is passable but not spectacular. While it gets reasonably loud, it lacks depth and clarity, especially at higher volumes, and bass is almost nonexistent. For casual use or voice calls it’ll do, but for music or movies, headphones or a Bluetooth speaker are a must.

Specs & Performance

• Snapdragon 6 Gen 1 chipset falls behind faster rivals
• 120Hz screen
• Generous 12GB RAM and 512GB storage

The Reno 13 FS uses the Snapdragon 6 Gen 1 chipset – a 4nm octa-core processor that’s now starting to feel slightly dated. But in real-world use, the phone handles daily tasks just fine. Messaging, calls, browsing, and light social media use are smooth, and the 120Hz screen rarely feels bottlenecked by the CPU.

Connor Jewiss / Foundry

But throw any demanding games or heavy multi-app usage at it and the cracks start to show. This smartphone couldn’t really handle any games more intense than Subway Surfers. If you try to do slightly more intensive tasks, you’ll begin to struggle.

In Geekbench 6, the Reno 13 FS scores 937 in single-core and 2679 in multi-core tests – slightly below newer mid-range competitors like the Galaxy A36 and Moto G85. That means performance is fine for everyday users but not ideal for those looking to future-proof. It’s miles behind the Reno 13 Pro, but that’s what you’d expect.

What helps is the generous 12GB RAM and 512GB of storage – a rarity in this price tier. It gives the Reno 13 FS more breathing room for multitasking and media than competitors such as the Pixel 8a or Samsung Galaxy A36. There’s even a microSD slot, which many rivals now skip entirely.