Oppo Find X9 Ultra vs Samsung Galaxy S25 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.

Samsung Galaxy S25 Ultra

Virtually every reviewer calls the S25 Ultra display the best on a smartphone, thanks to the Gorilla Armor 2 anti-reflective coating that practically eliminates glare in sunlight, the 2,600-nit peak brightness, and the sharp 1440p LTPO panel. A few reviewers note PWM dimming only reaches 480 Hz and peak auto-brightness doesn't always sustain.

• The anti-reflective coating makes it one of the easiest phones to use in direct sunlight and held up well to scratches over a week of abuse.
• The Gorilla Armor 2 panel strikes an almost perfect balance between glossy and matte, with 2,600-nit peak brightness that dazzles in any environment.
• The S25 Ultra's anti-reflective screen eclipses every other smartphone right now, especially under harsh sunlight.
• After six months of use it is simply put: the best display I've ever seen on mobile — the bezels, brightness and colors are unbeatable.
• The low-glare, bright LTPO display is a strength, but PWM dimming is only at 480 Hz which can bother sensitive eyes.
• The display still only hits around 850 nits with the manual brightness toggle, so you rarely see the full peak brightness outside of HDR.
• Even without a huge display upgrade, this is still absolutely one of the best displays — super crisp, very bright, high-refresh-rate LTPO.
• Slimmer bezels grow the screen to 6.9 inches without making the body larger, and the Gorilla Armor 2 glass looks great.
• r/Android commenters who upgraded from the S23 Ultra call out the titanium body and the non-reflective screen as the two features they actually notice day-to-day.

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.

Samsung Galaxy S25 Ultra

The Snapdragon 8 Elite for Galaxy delivers a meaningful generational jump in both CPU and GPU, rivaling Apple's A18 Pro and outscoring the iPhone 16 Pro Max in multi-core. The 40 percent larger vapor chamber keeps the phone cool even under sustained gaming loads. The r/apple thread citing a 36% GPU lead over the iPhone 16 Pro Max generated heated discussion, with most commenters conceding the Snapdragon chip is genuinely fast even if they still wouldn't switch.

• The phone benchmarks crazy high, rivaling Apple's A18 Pro — a little lower in single core but higher in multi-core.
• Samsung's 40 percent larger vapor chamber keeps the phone from warming up in normal use and benchmarks are up 30-40 percent depending on the task.
• Playing Genshin Impact at max settings for nearly an hour produced no stutters and no hot spots — a noticeable improvement over the S24 series.
• Multi-core Geekbench hits 9,793 versus the iPhone 16 Pro Max at 8,772 — the S25 Ultra pulls ahead thanks to extra cores and 12GB of RAM.
• The Snapdragon 8 Elite is the most welcome generational upgrade this year, with a boosted 'for Galaxy' variant delivering more CPU headroom than the standard chip.

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.

Samsung Galaxy S25 Ultra

The 5,000 mAh battery is unchanged but the more efficient chip pushes real-world endurance comfortably beyond a day — Engadget measured 29h 27m video runtime, Mrwhosetheboss got nearly 9 hours of screen-on time. Wired charging tops out at 45W, wireless at 25W. The Qi2 Ready implementation without built-in magnets is a consistent frustration, and Reddit users openly say the OnePlus 13's silicon-carbon battery was the more exciting release this year.

• Most days end with 60 percent left over — good but not amazing for a modern flagship.
• Local video rundown lasted an incredible 29 hours 27 minutes — almost two hours longer than the S24 Ultra.
• Battery life is just under 9 hours of total screen-on time per charge, regularly ending days with 30-40 percent remaining.
• Standby time after half a year of use remains excellent — never a single battery issue during long-term testing.
• Qi2 Ready is frustrating — you need a third-party magnetic case for MagSafe-like functionality, and some cases have weak magnets that pop off.

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.

Samsung Galaxy S25 Ultra

One UI 7 on Android 15 is Samsung's biggest skin update in years and earns broad praise for polish. Gemini replaces Bixby as the default assistant on long-press and gains cross-app actions, though the experience is uneven — some reviewers report magical moments, others catch hallucinations. Samsung has committed to seven years of updates, and Galaxy AI is free only through the end of 2025. The r/gadgets thread is openly hostile toward the AI pitch — most top comments view it as bloat, tracking, or a distraction from real hardware progress.

• Gemini can put events on the calendar, but it also hallucinates recipes and insists flights leave the wrong city — AI makes things up a lot.
• Galaxy AI features will be free only through the end of 2025, so don't be surprised if the AI phone comes with an AI subscription fee.
• Having two assistants (Gemini and Bixby) is confusing, and Now Brief still hasn't produced anything insightful in two weeks of use.
• Improved natural-language commands throughout the phone feel slightly magical — asking the phone to add the next Knicks game to a calendar just works.