I’m all about telephones that final with no energy financial institution. The OnePlus 15 and OPPO Discover X9 Professional do exactly that, packing big batteries and proving different manufacturers have some catching as much as do.

In case you’ve learn my telephone opinions, you already know I really like dwelling with out carrying an influence financial institution. The OnePlus 15 and OPPO Discover X9 Professional pack big batteries that free you from trying to find a charger. If different manufacturers don’t catch up quickly, OnePlus and OPPO will stand out—at the least within the US. However don’t get me flawed, these telephones supply far more than simply lengthy battery life. In my OnePlus 15 vs. OPPO Discover X9 Professional breakdown, I cowl design, show, efficiency, digital camera, battery, and charging so you possibly can decide the one which fits you.

A number of folks simply get an iPhone or Samsung as a result of everybody else does. However we stay within the golden age of Chinese language manufacturers, and also you would possibly rating higher worth relying on what you want in a telephone. Nonetheless, like the whole lot, each the OnePlus 15 and OPPO Discover X9 Professional have their quirks.

Design

Apart from Nothing, smartphone manufacturers make minor design tweaks annually—altering colours, adjusting display screen curves, or reshaping digital camera zones. The OnePlus 15 breaks that cycle. Its design feels easy, clear, and sharp. The body and digital camera bump are stage, and the entire physique leans right into a squared kind. I vibe with that.

And the OnePlus 15 colours… good. You get matte black, matte sand, and matte violet. That violet hits with a recent look. At first, I went straight for the Extremely Violet. Then I seen a small playful tone in it, which pulled me out of the temper. That’s when the Infinite Black began to develop on me. It brings the identical spirit because the matte-black iPhone 7, a telephone I nonetheless miss.

Matte blacks stack up a couple of smudges in most telephones, so I had a little bit of concern. Nonetheless, OnePlus 15 homeowners say the again stays clear with zero marks.

Transferring on to the OPPO Discover X9 Professional, you get a super-thin 1.15 millimeter body, similar because the OnePlus 15. So irrespective of which one lands in your hand, you maintain a neat, compact telephone. My solely challenge with the Discover X9 Professional’s design lies within the colour set. You solely get Silk White or Titanium Charcoal, although the Charcoal tone pairs properly with the digital camera zone, which softens the blow.

Flip the Discover X9 Professional over, and also you’ve a digital camera format not like any earlier OPPO telephone. Corning Gorilla Glass Victus 2 and an aerospace aluminum body guarantee it will probably take hits from life with no concern. On the OnePlus facet, the Sand Storm trim makes use of a troublesome mid-frame and digital camera ring with Micro-Arc Oxidation. OnePlus claims this body beats aluminum by 3.4x and titanium by 1.3x, although I’d anticipate impartial affirmation.

Show

The OnePlus 15 runs a 6.78-inch display screen with a peak refresh price of 165 Hz. The model says prime titles like Name of Obligation, Conflict of Clans, Actual Racing 3, and Brawl Stars run at max price. Outdoors video games, the handset stays in a 1–120 Hz vary for scrolling, apps, and multitasking.

OPPO makes use of the identical 6.78-inch display screen with a 120 Hz refresh price. However there’s lots to like concerning the Discover X9 Professional’s show. Whether or not you’re strolling down the road or driving someplace, display screen brightness could make or break the expertise. The Discover X9 Professional takes that fear away with 1,800 nits full-screen and a peak of three,600 nits for HDR. By comparability, the OnePlus 15 hits 1,222 nits in Tom’s Information exams. Higher than the OnePlus 13 at 1,104 nits—however the hole to the Discover X9 Professional remains to be noticeable.

Efficiency

It goes with out saying that the OnePlus 15’s Snapdragon 8 Elite Gen 5 handles on a regular basis duties with ease. However the whole lot modifications while you push the GPU exhausting, in response to Android Authority’s findings.

In lengthy, intense gaming exams, the OnePlus 15 heats up. Throughout 3DMark, the telephone hit 127 °F on the skin. Taking part in Name of Obligation: Cell on my iPhone 15 Professional warms the telephone a bit of, which makes me put the machine down. I can think about how uncomfortable the OnePlus 15 turns into.

The OPPO Discover X9 Professional, with its Dimensity 9500, accomplished the identical exams with out overheating. Once I reviewed the Discover X9 Professional, I famous that OPPO appeared to have chosen MediaTek’s chip to chop prices. Who would count on the Snapdragon 8 Elite Gen 5—the chip within the Xiaomi 17 Professional Max and different flagships—to battle with severe warmth on the OnePlus 15?

For now, I counsel anybody who performs heavy video games, runs emulators, or pushes their telephone exhausting maintain off on shopping for the OnePlus 15. As a substitute, you possibly can go together with the OPPO Discover X9 Professional or a gaming-focused telephone just like the REDMAGIC 11 Professional.

Digicam

The OnePlus 15 comes with a 50 MP essential sensor, a 50 MP ultrawide, and a 50 MP telephoto with 3.5x optical zoom. A 32 MP entrance shooter sits on the entrance for selfies. That mentioned, OnePlus drops the Hasselblad hyperlink and runs its personal system with the DetailMax Engine, which tangles the story a bit.

I believe the triple 50 MP setup and the brand new engine kind a strong mixture. Colours keep pure, and the telephone grabs a whole lot of element. On the similar time, the OnePlus 15 slows every shot and tries to push ISO down, so even a tiny hand shake can smash a second with blur or noise. I don’t be part of the roast storms on X or Reddit, but I need to see OnePlus push {hardware} ahead annually or at the least maintain the bar regular.

OPPO introduced its Hasselblad flagship in Barcelona on October 28. The Discover X9 Professional contains a 50 MP Extremely XDR essential sensor from Sony (23 mm, f/1.6), a 50 MP ultrawide (15 mm, f/2.0), plus an enormous 200 MP periscope telephoto (70 mm, f/2.1).

On the whole, the Hasselblad lens delivers sturdy zoom pictures as much as round 20x. So should you crave far-off scenes, you may get lots from the Discover X9 Professional and its wild attain.

I scrolled via a bunch of pictures on X that regarded plain at first, however a fast zoom revealed sharp element and pure colour. General, I’d say OPPO’s flagship sits simply behind the Xiaomi 15 Extremely and the Vivo X200 Extremely, which nonetheless stand on the prime of the digital camera race.

Battery

The OnePlus 15 contains a huge 7,300-mAh battery. Far above the same old 5,000-mAh cells in telephones just like the Galaxy S25 Extremely and iPhone 17 Professional Max. That further energy offers the telephone the uncommon capacity to push previous two full days with ease.

US consumers get a bonus, because the OnePlus 15 comes with a silicon-carbon pack that holds extra power with out rising in dimension. Because of Silicon NanoStack, the body stays slim and retains a traditional weight whereas nonetheless setting a recent mark for lengthy use.

The Discover X9 Professional additionally runs a silicon-carbon pack, with an enormous 7,500-mAh capability. The EU model retains that enormous dimension, regardless that different manufacturers shrink battery capability in some areas.

Charging

OnePlus stays one of many few manufacturers that embody a charger within the field, primarily as a result of that’s the one means to make use of its SuperVooc fast-charging tech. However there’s a catch.

In case you like wi-fi charging and desire a Qi2 telephone with magnets like MagSafe for simpler, quicker charging, the OnePlus 15 received’t lower it. It helps wi-fi charging, however solely customary Qi, which fees slowly. You may nonetheless purchase OnePlus’ 50 W wi-fi charger for quicker speeds, however that prices $79.99.

The Discover X9 Professional helps 80 W charging with OPPO’s SuperVOOC or as much as 55 W by way of USB Energy Supply. In contrast to the OnePlus 15, OPPO doesn’t embody a charger within the field. That’s a pity, since earlier OPPO fashions got here with a quick charger and a case to benefit from the telephone’s charging velocity.

Pricing and availability

Even with all of the import tariffs floating round, it’s good to see OnePlus isn’t elevating costs. The OnePlus 15 begins at $899.99 for the Infinite Black model with 12 GB RAM and 256 GB storage. The Sand Storm and Extremely Violet colours go for $999.99 and pack 16 GB RAM with 512 GB storage.

US consumers must wait a bit as a result of the federal authorities shutdown is slowing down the FCC and piling up regulatory approvals. OnePlus defined,  “On account of the federal government shutdown, machine certifications have been delayed.”

“Subsequently, US gross sales for the OnePlus 15 can be postponed till they’ve been secured. We’re hopeful that approvals could be generated rapidly.” How lengthy that can take stays unclear.

The Discover X9 Professional prices £1,099 ($1,446.61) for the 16 GB RAM, 512 GB ROM mannequin. OPPO nonetheless skips the US market, and that stays the case with the Discover X9 Professional. You may nonetheless get an OPPO telephone within the States should you purchase an unlocked unit from retailers like Wondamobile or Trinity Electronics. Simply make sure that the telephone comes as a International Model and do not forget that US community assist could be inconsistent, with T-Cell and AT&T giving stronger outcomes.

Verdict: OnePlus 15 vs. OPPO Discover X9 Professional

The OnePlus 15 feels clear, easy, and sharp in hand, and I really like the matte violet at first look, although Infinite Black stole my coronary heart over time. The OPPO Discover X9 Professional appears strong, too, with its skinny body and Hasselblad digital camera setup, however the colour choices really feel a bit restricted.

Efficiency-wise, the OnePlus 15 handles day-to-day duties properly, but it heats up beneath heavy gaming, whereas the Discover X9 Professional stays cool it doesn’t matter what you throw at it.

I like each screens, however the X9 Professional’s brightness takes the sting. Battery life on each is huge, although OnePlus retains it slim with its silicon-carbon tech, and OPPO goes even greater.

On the finish of the day, I’d decide the telephone primarily based on how a lot I sport or how a lot I worth digital camera attain and display screen brightness.