Oppo Find X9 Ultra vs Xiaomi 15 Ultra

Oppo Find X9 Ultra

A 6.8-inch LTPO OLED with up to 144Hz and very high real-world brightness — among the brightest screens on any phone outdoors.

• 6.8-inch LTPO OLED panel up to 144Hz, with a maximum brightness around 1,800 nits and dimming as low as 1 nit.
• Hits a staggering ~3,600 nits of peak HDR brightness, making it incredibly easy to see and edit shots in direct sunlight.
• In manual mode the display peaks at 840 nits, rising to ~1,156 nits in auto on a 75% white patch and up to ~1,932 nits in the native gallery app.
• The smoother 144Hz panel and 3,600-nit brightness outperform Samsung's display.

Xiaomi 15 Ultra

A 6.73-inch 2K AMOLED with curved edges, 120Hz, a 3,200-nit peak and 1,920Hz PWM dimming. Reviewers call it gorgeous and one of the brightest screens around, with the lone caveat that real-world auto-brightness measured lower than the headline number.

• The 6.73-inch display is gorgeous, super sharp and crazy bright — fantastic indoors and out, second only to the Galaxy S25 Ultra in direct sunlight thanks to Samsung's anti-glare tech.
• On paper it has the brightest screen at 3,200 nits (vs 2,600 on the Samsung, 2,000 on the iPhone) and supports 1,920Hz PWM dimming so it flickers much less than its rivals.
• Lab testing clocked ~3,175 nits at 20% APL — basically stare-at-the-sun-and-still-see-your-screen territory.
• The maximum achievable auto-brightness is only around 1,150 nits, which is rather disappointing for this level of phone, though still usable under sunlight.
• It has 3,200 nits peak brightness across a 25% area rather than the usual 1% window — a genuinely usable peak.
• Watching YouTube, Netflix or gaming, the display still feels flagship-level 10 months in.

Oppo Find X9 Ultra

The reason to buy it. A Hasselblad-tuned quad system with the most versatile zoom on any phone, a true 10x optical periscope and an optional 300mm Hasselblad teleconverter. Near-universally praised, with only minor sharpness and ultrawide caveats.

• A 200MP main, 200MP 3x telephoto, 50MP 10x optical telephoto and 50MP ultrawide, all Hasselblad-branded — camera-first overkill in the best way.
• Consistently great photos, sharpness and dynamic range with really good color calibration — this phone did basically everything right in the camera department; an incredibly well-rounded smartphone camera.
• Is this the best camera phone ever built? — my new favorite camera phone and one of the best Android phones I've ever used.
• Even after a direct shootout, still the best camera phone I've ever used.
• Detail is very good, but sharpness remains a bit underwhelming on the main camera.
• The ultrawide is probably the weakest part of the setup — with the first three cameras taking so much space, Oppo reused the Samsung GN5 sensor here.
• Night-mode processing — color, contrast and exposure handling — is so much better than the Galaxy S26 Ultra's, and the ultrawide is now one of the best for detail preservation.
• The optional 300mm Hasselblad teleconverter delivers ~13x (300mm) optical-feel zoom that retains real telephoto sharpness, extending to ~60x (1380mm).

Xiaomi 15 Ultra

The whole point of the phone: a Leica Summicron quad system — a 1-inch-type 50MP main, a 50MP 3x telephoto, a 200MP 4.3x periscope and a 50MP ultrawide. Reviewers overwhelmingly rate it the best phone camera of its generation, with the only soft spots being the ultrawide and a missing variable aperture.

• A Leica Summicron system: a 1-inch-type 50MP main (23mm), a 50MP 3x telephoto, a 200MP periscope (4.3x optical, ~100mm) and a 50MP ultrawide — the 1-inch main is an unexpected differentiator no one else uses in a globally available model.
• As far as phones personally used, this is the best camera experience bar none — if cameras are your top priority you cannot get better than the 15 Ultra.
• Main camera-wise the Xiaomi is the best overall, especially for daytime shots and depth of field; at 3x it captures the most detail and at 5x it has the least noise versus the S25 Ultra and iPhone.
• Xiaomi did get the best camera hardware, but the leather-camera look is mostly aesthetic — what makes a real camera good is a far bigger lens, and this is still a small smartphone sensor.

Oppo Find X9 Ultra

Snapdragon 8 Elite Gen 5 puts it near the top of the benchmark charts, but sustained-load stability is mediocre and Oppo deliberately throttles early to control heat.

• As expected, the Find X9 Ultra earns excellent benchmark scores near the top of the charts.
• A 3D ultrasonic fingerprint scanner Oppo claims is 35% faster and 33% more reliable, plus vapor cooling to dissipate heat through the aluminium frame for better sustained performance.
• 3DMark returned ~7,530 best-loop and ~3,682 low-loop with only ~49% stability, and peak performance didn't last a minute — weak sustained behaviour.
• Genshin Impact stayed consistently above 50fps and remained smooth even when throttling to ~30fps after ~16 minutes at 41.5°C, at under 4W power draw.
• Honor of Kings averaged 144fps over 30 minutes at max settings; Genshin held max 60fps before stabilizing near 50fps.

Xiaomi 15 Ultra

Snapdragon 8 Elite with up to 16GB RAM and UFS 4.1 — flagship-grade and still excellent a year on. Real-world gaming holds ~57–60fps with acceptable power draw, though heavy synthetic stress tests show meaningful throttling.

• Runs Qualcomm's Snapdragon 8 Elite with up to 16GB RAM and 1TB UFS 4.1; 10 months on it's still an extremely well-balanced phone that feels like a true flagship.
• In ~50 minutes of gaming it held a stable ~57–60fps with 4–8W draw — acceptable for the 8 Elite — where some rivals throttle hard and drop to 30fps after 30 minutes.
• After 30 minutes of real gaming with apps closing/reopening the CPU sat around 47°C with no overheating — heat only appears in synthetic 3DMark/throttle benchmarks, not realistic use.
• In a 3DMark stability run it scored ~70–76% stability (lowest loop ~4,335–4,542), holding 20–43fps.
• Under a punishing 60-minute 100-thread CPU throttle test it dropped roughly 40–50% in sustained performance, recovering only slightly better than the S25 Ultra.

Oppo Find X9 Ultra

A genuine highlight: a 7,050mAh silicon-carbon cell that posts some of the best endurance numbers of any 2026 flagship, with fast 100W wired and 50W wireless charging.

• Draws power from a 7,050mAh battery — a sizeable increase over the previous generation — with 100W SuperVOOC wired and 50W AirVOOC wireless charging.
• Earned an active-use battery score of over 20 hours; with the SuperVOOC charger it went 0–75% in 30 minutes and to full in 45 minutes.
• After ~10 hours of continuous use starting at 7am it still had 53% battery, regularly getting 8–9 hours of screen-on time and ~40% left after a 13-hour day.
• A PCMark synthetic loop returned 15 hours 2 minutes, and 100W SuperVOOC charging took ~49–52 minutes (the charger isn't included).
• With moderate usage you can easily expect more than 2 days of battery life — Oppo finally feels like a truly complete product.
• Charges 0–100% in about 52 minutes on the official 80W charger in a head-to-head charge test.

Xiaomi 15 Ultra

The global model's ~5,410mAh cell (vs 6,000mAh in China) is the phone's weakest area — many reviewers end the day under 30%, with a notable idle drain — though 90W wired charging fully refills it in roughly an hour and Chinese-variant users report much better longevity.

• The global variant has a smaller 5,410mAh cell vs the 6,000mAh China variant, and most days the phone is around or under 30% by the end of the day — it could have done with a bigger battery.
• With always-on display, 120Hz and intensive camera use it consistently achieved over 15 hours of usage on a single charge in real-world testing.
• On the global/Indian 5,410mAh battery, the in-box 90W charger refills it roughly: 18% in 5 min, 67% in 30 min, 90% in 45 min, and a full charge in about an hour.
• On the Chinese 6,000mAh variant with a power-efficient chip, the battery was still at 78% after not charging for three nights.
• There's a real idle-drain issue — 20 minutes of light morning use can drop 5–6%, and it persists even with extra-dim settings enabled.

Oppo Find X9 Ultra

ColorOS 16 has matured a lot and is fast and smooth, but it still trails Samsung and Google on AI depth and feels iOS-derived to some — the phone's clearest weak point relative to its hardware.

• ColorOS 16 feels like one of the best versions yet.
• It's a good Android experience but not on par with the Galaxy experience for AI features and tool integration, and portrait autofocus struggles in some low-light conditions.
• For me it's the best version of Android I've ever used — light, fast and smooth with no major issues.
• The hardware is superior to the latest Samsung, but the software feels like an imitation of iOS.
• With a bit of tweaking and updates, Oppo's software and camera engineers can make this even better — there's clear headroom.

Xiaomi 15 Ultra

HyperOS (now on the Android 16 / HyperOS 3 track) is the phone's most criticized aspect: it heavily mimics iOS, ships with quirks you must tweak, and carries small persistent bugs — though it adds genuinely useful touches like a Super Island and AI features, and Xiaomi has improved it via updates.

• Out of the box it gives a really iPhone-like feel and you have to go in and change things before it behaves how you want.
• Long-standing requests are still ignored — no combined notification/control center, removed options like front-camera switching while recording video, and the dropped variable aperture.
• HyperOS adds a useful Super Island (tap to expand or switch to a floating window) and direct drag-and-drop into chats, with OS 3 refining the control center.
• Xiaomi's animations are nearly iOS-level and arguably better than stock Android, but the software is still seen as subpar for the Western market.
• Xiaomi now offers a longer software-update commitment (reported up to 6 years) — a meaningful improvement for long-term buyers.

Oppo Find X9 Ultra

Premium-priced and hard to buy in many markets, but reviewers broadly conclude it out-cameras the S26 Ultra and Pixel and edges the Vivo X300 Ultra on usability.

• Its main compromises are the ~€1,699 price, large 236g body, occasional software concerns and limited availability in some markets.
• It feels like Oppo wanted to make the camera first and just happened to also create the best Android phone you can get right now — though it won't win every year-end award.
• The base Find X9 Ultra starts at 7,499 yuan in China — roughly £814 / ~$1,100 — but the heaviness and visual pressure are the first impression.
• The closest rival is the Vivo X300 Ultra, but the X9 Ultra wins by having a more user-friendly OS.
• The Hasselblad alliance delivers a phone that genuinely challenges the Galaxy S26 Ultra on cameras.

Xiaomi 15 Ultra

Roughly $893 in China and ~$1,220+ imported globally, it undercuts the Galaxy S25 Ultra and iPhone while comfortably winning the camera comparison. The catch is it's an import with no official US presence — a phone you 'probably can't buy' but the camera benchmark to beat.

• It launched at 6,499 yuan (around $893) in China; Xiaomi's Ultra line has always been more camera-centric than Samsung or Apple's top models.
• It combines top-tier hardware, excellent cameras and strong performance at a more competitive price point than its rivals.
• The Xiaomi wins the camera part comfortably, but the Galaxy S25 Ultra may be the better all-rounder — a 'maybe' that hangs on whether the S Pen matters to you.
• It's 'an excellent phone you probably can't buy' — one of the best devices that simply isn't officially sold in the US.