Xiaomi 17 Ultra Review: Hardware Perfection, Software Frustration
The Xiaomi 17 Ultra's 200MP continuous-zoom telephoto and 1-inch main sensor make it one of the most capable camera phones available — but HyperOS adware and a heavy camera bump keep it from being an unqualified win.
The Xiaomi 17 Ultra sits at the top of Xiaomi's current lineup, above the compact Xiaomi 17, and it makes its priorities obvious from the moment you pick it up: this is Xiaomi's most camera-obsessed phone, wrapped around a genuinely large sensor array that PhoneArena summed up as "hardware perfection, software frustration" — a framing that holds up well across independent testing.
Design and Build
This is the first Xiaomi Ultra with a flat display rather than curved edges, at 8.29mm thick and made from aluminium alloy with composite fibreglass. The camera bump is, by multiple reviewers' own description, genuinely large — Mark Ellis Reviews called it "utterly worth the extra heft" once you adjust to it, but was upfront that buyers coming from phones with smaller camera modules should expect a real adjustment period. 91Mobiles noted Xiaomi has actually trimmed weight from 226g to 218g and thickness from 9.35mm to 8.29mm versus the Xiaomi 15 Ultra despite the larger 6,000mAh battery — a genuine engineering improvement, even if the phone still reads as substantial in hand.
Display
A 6.9-inch flat LTPO OLED panel, up from 6.73 inches on the previous generation, runs at up to 3,500 nits peak brightness with 1–120Hz adaptive refresh and HDR10+/Dolby Vision support. 91Mobiles specifically praised how the panel pairs with HyperOS's fluid animations for a genuinely smooth, buttery feel — a strength across the whole display experience, not just raw specs.
Camera
Three lenses make up the Leica-branded system: a 50MP, 1-inch main sensor at 23mm, a 50MP 14mm ultrawide, and a 200MP telephoto with continuous optical zoom spanning 75–100mm — a genuinely more sophisticated zoom mechanism than most rivals' fixed-focal-length periscopes. Independent testing backs up the hype: DxOMark scored the camera system 166 points, a strong result, though notably not enough to claim the top overall spot in DxOMark's rankings — the iPhone 17 Pro was specifically flagged as still ahead in that comparison, a genuine, honest limit on an otherwise excellent system rather than an outright win across every benchmark.
Performance
Snapdragon 8 Elite Gen 5 on a 3nm process, with 12 or 16GB of RAM and up to 1TB of storage, delivers exactly the flagship-tier performance the price implies — PhoneArena's review specifically praised the phone's performance and cooling as strong enough to avoid slowdowns even under sustained heavy use.
Software
This is where the reviews turn notably less kind. PhoneArena's own headline — "hardware perfection, software frustration" — captures a consistent thread across independent coverage: Beebom Gadgets specifically called out adware in the software and said the UI "needs a little more polish," echoing the same HyperOS bloatware criticism that's followed Xiaomi's phones across generations. It's not a dealbreaker for most reviewers, but it's a real, repeated complaint rather than an isolated gripe.
Battery and Charging
The global model carries a 6,000mAh battery — smaller than the 6,800mAh Chinese-market unit, but still a genuine, meaningful upgrade over the Xiaomi 15 Ultra's 5,410mAh cell. 90W wired and 50W wireless charging round out a battery package that multiple reviewers described as comfortably outlasting most rivals across a couple of days of typical use.
Verdict
GSMTechTok Verdict
The Xiaomi 17 Ultra delivers one of the most capable camera systems on the market today, backed by genuine flagship performance and battery life, in a design that's grown more refined despite its still-substantial camera bump. HyperOS's persistent adware and polish issues are the honest, repeated catch — and DxOMark's testing confirms this is excellent rather than outright best-in-class on camera. If camera capability is your priority and you can live with Xiaomi's software quirks and import-only US availability, it's a genuinely excellent phone.
Frequently Asked Questions
What makes the Xiaomi 17 Ultra's camera different from the standard Xiaomi 17?
The Ultra steps up to a quad Leica-branded rear system built around a 200MP main sensor, versus the standard 17's triple 50MP setup. The Ultra's telephoto in particular offers continuous optical zoom across a 75–100mm focal range, a genuinely more sophisticated system than most rivals' fixed-focal-length periscopes.
How does the Xiaomi 17 Ultra's camera actually rank against rivals?
Very well, but not at the absolute top. DxOMark's independent camera testing scored it 166 points — a strong result that puts it among the best camera phones available, but it fell short of the top spot in DxOMark's overall rankings, with the iPhone 17 Pro specifically noted as still ahead in that particular test.
Is the Xiaomi 17 Ultra sold in the US officially?
No. As with all Xiaomi phones, there's no official US carrier or retail channel. It's available through import retailers and select European markets, but not through Amazon, Best Buy, or any US carrier.
Price history · 90 days · GBP
Xiaomi 17 Ultra
Current
£1,349
90d Low
£1,270
18 Aug
90d High
£1,373
22 Aug
Launch price
£1,349
All-time low ↓
Price tracking from major UK retailers. Updated daily. Prices may vary.
How it compares: Xiaomi 17 Ultra vs Xiaomi 17
Xiaomi
Xiaomi 17 Ultra
From £1,349
Xiaomi
Xiaomi 17
From €999
Snapdragon 8 Elite Gen 5
Chip
Snapdragon 8 Elite Gen 5
200MP Leica quad
Main cam
50MP triple Leica
6,000mAh · 90W
Battery
6,330mAh · 100W
From £1,349
Price
From €999
Related Reviews
87Samsung Galaxy S26+ Review: A Genuinely Good Phone With a Genuinely Awkward Job
From £999
91iPhone 17 Pro Max Review: The Best Battery Life on Any iPhone, Wrapped in a Design That Divides Opinion
From £1,040
84iQOO Neo 11 Review: Full Flagship Silicon at a Mid-Range Price, If You Can Live Without the Camera Bragging Rights
From £520