Oppo Find X9 Ultra review

A familiar, but faster 144Hz LTPO OLED display

The Find X9 Ultra features seemingly the same 6.82-inch LTPO OLED display with 1440 x 3168px resolution as before, but with subtle differences. The newer panel offers a 144Hz refresh rate, up from 120Hz, and is marketed as slightly brighter, which we found to be correct, according to our tests.

The display also supports niceties like 10-bit color depth, high-frequency 2160Hz PWM to cater to people with sensitive eyes, and all the typical HDR certifications like HDR10+, Dolby Vision, and HDR Vivid.

According to our tests, the new panel is indeed brighter than before. In manual mode, the display peaks at 840 nits, while in auto mode on a 75% white patch, the panel can go up to 1,156 nits, or 1,932 nits in the phone's native gallery app.

With a 10% patch, those measurements rise to 1,216 and 3,367 nits, respectively.

This is a typical behavior for Oppo, Realme, and OnePlus phones, so no surprise here.

The minimum brightness level is just 1 nit - pretty solid.

Refresh rate

The device is equipped with an LTPO panel capable of granular refresh rate control, but some modes are missing during normal use. In Auto switch mode, the system dials down to 1Hz when the screen is idle and goes up to 120Hz in most cases. However, apps like Google Maps or Google Chrome are capped at 90Hz for some reason, so you might have to force a higher refresh rate on those apps if you want the smoothest possible experience. The "High" preset allows you to do that, but you have to select it specifically for each app.

Additionally, 144Hz seems to be reserved only for certain gaming titles where the display boosts to 144Hz. But in everyday use, the screen caps at 120Hz.

The panel also failed to match 24fps videos properly. It lowers the refresh rate to 30Hz when watching 24fps videos, instead of running at 24Hz or 48Hz.

Either way, the phone doesn't seem to be utilizing the full potential of the 144Hz panel, leaving more to be desired.

Battery life

The Oppo Find X9 Ultra draws power from a 7,050 mAh battery, a sizeable increase over the previous generation, but also lower than the Find X9 Pro's 7,500 mAh cell. Expectedly, battery life is a tad lower as a result.

The Find X9 Ultra earned a 20:10h Active Use Score, posting particularly strong video streaming and web browsing runtimes.

In the broader context, the Find X9 Ultra offers excellent battery life, outpacing some of its competitors by a little, but still convincingly enough.

Oppo claims that the impressive battery life is achieved partially due to the new in-house PowerCore Battery Management Chip (a fancy name for their battery management system, we presume). It's allegedly designed specifically for silicon-carbon batteries and improves stability in low-power stages. It also helps improve battery discharge in low-temperature environments.

Charging speed

The Oppo Find X9 Ultra supports the same 100W SuperVOOC fast cable charging and 50W AirVOOC wireless charging when paired with the appropriate accessories. The device also supports reverse wired and wireless charging to top up some accessories on the go.

When it comes to actual charging, paired with a compatible 100W SuperVOOC charger, the X9 Ultra shows solid performance. It may not look impressive in the charts, but it's actually just a tad slower than some of its competitors. It can do from 1 to 100% in 45 minutes, which is negligibly slower than other devices, but it's tasked to charge a bigger battery compared to the Honor Magic8 Pro, the Xiaomi 17 Ultra, or the Galaxy S26 Ultra.

We also measured the peak charging, which was around 83W for a brief moment, before settling around 60-70W for the majority of the time. This is quite in line with expectations for a 100-watt rated system.

Of course, we also tested the phone with a compatible Power Delivery charger that can charge the phone at the advertised 55W, and the 1 to 100% charging time remained practically the same. The phone peaked at around 40-41W and settled there for most of the time.

The bottom line is that you can charge the phone decently fast with a compatible Power Delivery charger that supports at least 55W, but if you want a little bit more oomph in the middle of the charging cycle, then definitely look for Oppo's 100W SuperVOOC charger.

ColorOS 16 also offers a handful of battery health-oriented features like bypass charging, smart charging that learns from your charging behaviors and boosts charging speed only when needed, and the option to set a hard cap limit on battery charging, say 85%, for example.

Speakers

The Oppo Find X9 Ultra features a set of stereo hybrid speakers, one that acts as an earpiece at the top and one full-fledged speaker at the bottom. Nothing out of the ordinary.

The handset achieved a "Very Good" -25.6 LUFS loudness score, which is mostly in line with the competition.

Tuning, on the other hand, isn't necessarily the best we've heard, though it isn't bad, per se. Compared to the Xiaomi 17 Ultra and the Galaxy S26 Ultra, the bass seems to be lacking. It sounds a bit flatter, but also offers clean highs and vocals. It's most definitely better than the Find X9 Pro, that's for sure. At the end of the day, the Galaxy S26 Ultra seems to be the best choice in this regard among the phones we've tested recently.

Use the Playback controls to listen to the phone sample recordings (best use headphones). We measure the average loudness of the speakers in LUFS. A lower absolute value means a louder sound. A look at the frequency response chart will tell you how far off the ideal "0db" flat line is the reproduction of the bass, treble, and mid frequencies. You can add more phones to compare how they differ. The scores and ratings are not comparable with our older loudspeaker test. Learn more about how we test here.