Vivo X300 Ultra Review: So Close to Perfection It Hurts

The Vivo X300 Ultra marks a genuine first: Vivo's top-tier Ultra branding, previously kept as a China exclusive while only the Pro tier went global, is now sold worldwide. Digital Trends summed up the result bluntly — "so close to perfection it hurts" — and that framing holds up remarkably well across independent reviews.

Design and Build

Available in Phantom Black and Alpine White, with IP68/IP69 water and dust resistance and a 3D ultrasonic in-display fingerprint sensor, the X300 Ultra's build quality drew little criticism across reviews. It is, however, a genuinely large and heavy phone worth knowing about before buying rather than after: GSMArena's own measurements put it at 163.0 x 76.8 x 8.2mm and 232g, and Notebookcheck's own verdict is blunt that despite the lightest color variant shaving a few grams, it's "still not handy" — this is not a phone anyone would call compact or pocket-friendly, camera capability aside. Against its closest rival specifically, one direct comparison found the X300 Ultra's glass back and squared frame reads as cleaner and more understated than the Find X9 Ultra's bronze-and-leather finish, though that same reviewer felt the Oppo made the stronger first impression as a result — restraint versus distinctiveness, essentially a matter of taste rather than one design being objectively better. The one consistent design complaint: Digital Trends specifically called out the removal of the dedicated camera control button that featured on the X200 Ultra, calling it "a step backwards for a device that places such heavy emphasis on photography."

Display

A 6.82-inch LTPO OLED panel at 2K resolution (3168 x 1440) runs up to 144Hz with a marketed 4,500 nits local peak brightness. GSMArena's own lab measurements found real-world figures a good way under that marketed ceiling but still genuinely excellent: 621 nits in manual mode, 1,935 nits in auto mode at a 75% white pattern, and 3,328 nits peak at a 10% pattern — PhoneArena's own separate measurement of 3,300 nits at 20% APL corroborates the same broad range. 91Mobiles called it "among the best available" — a strength that's drawn essentially no criticism across the reviews surveyed for this piece, and color accuracy stays close to sRGB targets on par with the best rivals. Vivo also offers a genuine choice between PWM and DC dimming in OriginOS 6's Eye Care settings, both individually calibrated to avoid color distortion at low brightness — a level of user control most rivals don't expose.

Camera

This is where the X300 Ultra earns its reputation. A 200MP Sony LYT-901 main sensor at 1/1.12-inch, paired with a 200MP Samsung ISOCELL HP0 telephoto offering 3.7x optical zoom on a gimbal-stabilised mount, and a 50MP Sony LYT-818 ultrawide, make up the core system — with optional 200mm and 400mm screw-on Zeiss teleconverters available for genuine long-range work. GSMArena's testing praised Vivo's decision to stick with a single, highly capable telephoto rather than chasing a dual-telephoto trend, calling the 85mm zoom "one of the most versatile telephoto solutions around." 91Mobiles found the three-lens system "the most consistent I have tested on any smartphone," while noting the teleconverter kit is genuinely optional — useful for planned, distant shoots, not something casual users need to buy. Android Authority's comparison against rivals specifically noted the X300 Ultra offers "superior camera hardware" versus the Galaxy S26 Ultra, at a real cost premium.

Two real, disclosed optical trade-offs came bundled with those sensor upgrades, and neither is a dealbreaker but both are worth knowing: the main camera's aperture narrowed to f/1.9, down from the X200 Ultra's brighter f/1.7-equivalent setup, and GSMArena's own testing found the telephoto reverted to a dimmer f/2.7 as well, down from the X200 Ultra's f/2.3 and back in line with the older X100 Ultra. Both changes came with genuine sensor and processing gains that offset the light loss in practice, but it's a real optical step back on paper regardless. Video is a genuine strength overall — 8K recording across all three rear cameras, 4K up to 120fps, 10-bit Log capture, and Dolby Vision, with Digital Camera World calling it "finally, a video challenger to the iPhone." That said, Digital Trends' own comparative testing found video quality still trails Apple's very best specifically, a real, disclosed gap rather than a vague complaint. Notebookcheck also flagged one genuine soft spot: the new 12-channel color-sensing camera used for white balance and color science is, in their own words, "not yet convincing." The front camera carries over a 50MP sensor with autofocus, unchanged from the X300 Pro, and reviewers found it a solid, dependable performer rather than a headline feature — a sensible place for Vivo to hold the line given how much of its engineering budget clearly went into the rear array instead.

Performance

Snapdragon 8 Elite Gen 5 on a 3nm process, with 12 or 16GB of RAM, delivers exactly the performance this price commands — Digital Trends called it "incredibly fast" with effortless multitasking and excellent gaming performance. Sustained thermal management under real load is a genuine, measured weakness worth knowing specifically, not a vague caveat: Notebookcheck's own testing found the phone's underside reaching 51.3°C under load, against an average of 34.1°C across comparable phones, and its Wild Life Stress Test stability score of 110.7% actually trails the X200 Ultra's own 118.9% in the same test — a real, measured generational regression in sustained performance consistency, not an improvement. Everyday use isn't noticeably affected by this, but anyone planning extended gaming sessions or 4K video recording should factor it in.

Software

OriginOS 6 has genuinely matured, per Digital Trends, into "a polished and genuinely enjoyable software experience." This is also the first time OriginOS has shipped on international and EU units at all — Vivo previously reserved it for Chinese-market phones and shipped the older, less-refined FuntouchOS everywhere else, so this is a genuine, disclosed step up in software parity for buyers outside China. Vivo has also formally committed to 5 major Android OS updates plus 2 further years of security patches, 7 years total, matching Samsung and Google's own extended commitments on paper for the first time. That said, reviewer opinions on its visual style split in an interesting way — Android Authority's reviewer using the Chinese model felt it looked "too much like iOS," while a colleague using the global model felt the opposite, that ColorOS and Magic OS looked more like clones of Apple's own recent redesign. 91Mobiles flagged lockscreen notification polish and Vivo's real-world update rollout track record as genuinely trailing Samsung and Google specifically, a real if secondary criticism — the newly-promised support window is only as good as Vivo's history of actually delivering on it, and that history is shorter and less proven than its rivals'.

Battery and Charging

A 6,600mAh battery with 100W wired and 40W wireless charging delivers what Digital Trends called battery life "among the best in the flagship segment," with a 50% charge achievable in just over 20 minutes per Trusted Reviews' testing. One genuine caveat from Notebookcheck's detailed power testing: idle power consumption measured noticeably high initially, though a subsequent software update measurably improved it — worth knowing that early units may have shown worse real-world endurance than the battery capacity alone would suggest. GSMArena's own unboxing notes a genuine regional catch worth knowing before buying: the international 100W charger switched to a Type-C connector and ships in the box for most markets, but EU units specifically don't include a charger at all, down to local regulations rather than a Vivo cost-cutting decision.

Speakers are a genuine, disclosed weak point that reviews largely gloss over in favour of the camera coverage — Notebookcheck's own lab testing found the stereo pair plays loud enough at 84.3dB, but bass is nearly imperceptible, measuring 24.7% below the median for comparable phones, with an uneven, non-linear low-end response. It's not a dealbreaker on a camera-first flagship, but anyone expecting Samsung- or Apple-level speaker quality to match the rest of the hardware should adjust expectations.

Competition

The X300 Ultra's closest rival by far is the Oppo Find X9 Ultra, and reviewers largely agree the two represent genuinely different photographic philosophies rather than one simply beating the other. Engadget's own head-to-head is candid that both suffer from limited, confusing availability and variable regional pricing despite both companies claiming global launches. On raw main-camera light-gathering, Oppo has the edge — its 200MP 1/1.28-inch sensor opens up to f/1.5, genuinely brighter than the X300 Ultra's f/1.9, and Oppo also builds in a dedicated camera shutter button the vivo notably dropped this generation. Android Headlines' own detailed camera shootout found the results split by scenario rather than favouring either phone outright: the X300 Ultra's ultrawide is vastly superior and its low-light telephoto shots are generally preferred, while the Find X9 Ultra pulls ahead in good lighting at 10x zoom specifically and offers considerably more focal-length flexibility (23mm to 230mm built in, versus the vivo's 14mm to 135mm plus optional teleconverters). Oppo also packs a larger 7,050mAh battery against the vivo's 6,600mAh. One reviewer summed the choice up as color accuracy versus zoom versatility — Zeiss's natural, true-to-life tuning and superior high-zoom stabilization on the vivo, against Hasselblad's warmer color science and genuinely deeper built-in reach on the Oppo. Neither is a clear across-the-board winner; the right pick depends specifically on which trade-offs matter more to how you actually shoot.

Verdict

Frequently Asked Questions

How it compares: X300 Ultra vs X300 Pro

Vivo

X300 Ultra

From £1,399

92

Vivo

X300 Pro

From £1,099

89

vs

Snapdragon 8 Elite Gen 5

Chip

Dimensity 9500

200MP + 200MP Zeiss

Main cam

200MP Zeiss APO telephoto

6,600mAh · 100W

Battery

6,510mAh

From £1,399

Price

From £1,099

Full X300 Ultra review

Full X300 Pro review