In short: the Galaxy S26 Ultra's standout new feature is Privacy Display, a genuinely clever hardware trick that makes your screen unreadable to anyone sat beside you on the train — reviewers across the board rate it as one of the smartest additions to a phone screen in years. Charging is also meaningfully faster. But dig into the camera, and all three outlets we've drawn on agree the hardware itself is starting to lag behind cheaper Chinese rivals, even though Samsung's image processing keeps results looking good in practice. Here's what independent testing found, category by category.
Buy it if…
- You regularly use your phone somewhere people can glance at your screen, and want a genuine hardware fix rather than a screen protector
- You want the fastest wired charging and best benchmark performance in a 2026 Android flagship
- You shoot a lot of handheld video and want the most stable in-phone stabilisation currently available
Skip it if…
- Camera hardware and zoom quality are your top priority — cheaper rivals like the Oppo Find X9 Pro now match or beat it on paper
- You want Qi2 magnetic wireless charging built in without needing a case
- You're upgrading from an S25 Ultra purely for brightness or battery life — neither has moved on meaningfully
Price last checked: 28 July 2026
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What's good
- Privacy Display is a genuinely useful, hardware-level anti-peek screen with granular per-app and per-field control
- Chart-topping benchmark performance from the overclocked Snapdragon 8 Elite Gen 5 'for Galaxy' chip
- Much faster charging — 60W wired, up from 45W, with a verified 84% charge in 30 minutes
- Genuinely useful AI video stabilisation (Horizon Lock) that testers rated well ahead of the iPhone's equivalent
- Slightly thinner and lighter than the S25 Ultra, with the S Pen still included
Worth knowing
- Camera hardware — especially the 10MP 3x telephoto — is starting to fall behind cheaper Chinese rivals like the Oppo Find X9 Pro and Xiaomi 17 Ultra
- Frame downgraded from titanium to aluminium, and still no Qi2 magnetic charging built in
- Noticeable camera-bump wobble when the phone is placed flat on a table, flagged independently by two outlets
- Battery capacity unchanged at 5,000mAh while rivals like the OnePlus 15 move to much larger silicon-carbon cells
- Reviewers disagree on sustained gaming performance — one lab test found heavy CPU throttling under a 20-minute stress test, though real-world gameplay testing found it stayed cool
A closer look, category by category
Privacy Display & screen
The headline new feature is Privacy Display: a hardware-level pixel filter that restricts how far off-angle the screen can be read, selectively applied to specific apps, notifications or fields like PINs and passwords, and schedulable via Routines. GSMArena's lab testing found peak brightness roughly halves when it's active, and pixel density visibly drops under a microscope — only the 'Maximum Privacy' setting makes the screen properly unreadable side-on, with standard Privacy mode still allowing some off-angle visibility. Trusted Reviews called it 'genuinely impressive' and used it regularly on planes and in meetings; Tom's Guide said it was 'so clever I could see Apple stealing it.' Away from that feature, it's the same excellent 6.9-inch 120Hz LTPO panel as before — reviewers are split on brightness, with GSMArena finding it essentially unchanged from the S25 Ultra and Tom's Guide's own lab tests measuring it as very slightly dimmer, a discrepancy Samsung has disputed.
Camera
The 200MP main sensor still performs well — GSMArena praised 'nicely fine detail' and 'very good' dynamic range, and Tom's Guide found low-light shots noticeably clearer than the iPhone 17 Pro Max's in a head-to-head test. The concern is the supporting hardware: the 3x telephoto uses the same smaller 10MP sensor Samsung has fitted since the S22, and Trusted Reviews noted 'you'll now find better hardware on even mid-range phones like the Nothing Phone 4a.' The 5x telephoto switched to a new lens design that worsened close-up focusing distance from 26cm to 52cm. Samsung's AI Photo Assist (natural-language object editing) had mixed results in testing — GSMArena reported it 'sometimes worked pretty well and sometimes failed.' The clearest win is video: Horizon Lock stabilisation, which keeps footage level regardless of how you hold the phone, was rated 'insanely stable' by Tom's Guide, who found the iPhone's equivalent footage comparatively 'seesaw-like' by comparison.
Performance & battery
The Snapdragon 8 Elite Gen 5 'for Galaxy' chip topped GSMArena's benchmark charts against every other 2026 flagship tested, including comfortably beating the Pixel 10 Pro XL. GSMArena's own caveat is worth repeating: 'we doubt this would bring any meaningful improvement in user experience as a whole' for everyday use. Where reviewers genuinely disagree is sustained performance — GSMArena's formal 20-minute stress test found the CPU 'dipping below 50% of its max performance,' while Tom's Guide's real-world gameplay testing over an hour found the phone 'remained fairly cool to the touch.' Both findings are likely accurate for their respective test conditions rather than contradictory. Battery capacity is unchanged at 5,000mAh, with GSMArena's real-world testing giving it 16 hours 23 minutes of active use — 'solid on its own' but behind rivals from China and Apple. Charging is a genuine, verified upgrade: 60W wired charging hit 84% in 30 minutes in GSMArena's lab test, and wireless charging rises to 25W, though the phone still lacks built-in Qi2 magnets.
Software & Galaxy AI
The S26 Ultra ships with One UI 8.5 on Android 16, backed by a strong seven years of OS and security updates. Galaxy AI features are a genuine mixed bag: Circle to Search's multi-object recognition upgrade was well received with no complaints found in testing, and the Bixby-meets-Perplexity 'Hey, Plex' integration worked reliably for quick answers. Newer agentic features — like voice-booking an Uber in the background — are explicitly in a live-testing phase, and Tom's Guide was 'both excited... and a bit skeptical' of them. GSMArena flagged that Galaxy AI 'works with only a handful of languages' and remains restricted to Samsung's own apps in several cases, while Tom's Guide's broader complaint was feature fragmentation between Samsung's Gallery AI tools and Google's own Photos AI tools on the same phone — 'it can get confusing for me and I'm a nerd.'
Price
UK launch pricing is £1,279 for 256GB, £1,449 for 512GB and £1,699 for 1TB. Samsung notably didn't apply the same price hike it gave the standard S26/S26+ models. Some retailer listings by July 2026 show it selling meaningfully under RRP, though we'd recommend checking a live price on a major UK retailer before buying rather than relying on a single figure, since aggregator-reported discounts weren't independently confirmed for this review.
Price last checked: 28 July 2026Real-world use cases
Commuting, open-plan offices and shared spaces
This is where Privacy Display earns its keep — reviewers specifically called out using it on trains, planes and in meetings to stop anyone reading messages or banking apps over their shoulder.
Handheld video and vlogging
Horizon Lock's stabilisation was the single most praised camera feature across every review we drew on, described as a genuine generational leap over the previous Momentum and a clear advantage over the iPhone's equivalent.
Dedicated zoom and low-light photography
This is where it's least competitive — the smaller 3x telephoto sensor and worsened macro focusing distance mean keen photographers chasing the best possible zoom hardware may prefer a rival with a larger sensor.
Where it sits in the market
The S26 Ultra's biggest rivals are the iPhone 17 Pro Max and the Pixel 10 Pro XL, plus a wave of increasingly capable Chinese flagships. Tom's Guide's direct battery test actually found the iPhone lasting almost two hours longer on a single charge, even though Samsung wins comfortably on charging speed and benchmark performance. Against the Pixel, GSMArena rates the S26 Ultra ahead on both chipset performance and battery endurance. The more uncomfortable comparison, per GSMArena and Trusted Reviews, is with Chinese rivals: the Xiaomi 17 Ultra and Oppo Find X9 Pro are both said to outperform the S26 Ultra on camera hardware specifically, even though Samsung's software processing keeps its real-world photos competitive. Existing S25 Ultra owners are explicitly advised by GSMArena to skip this generation unless Privacy Display or faster charging genuinely matter to them.
How we reached this verdict
This verdict draws on full independent reviews from GSMArena, Tom's Guide and Trusted Reviews, each of which tested a retail or near-retail unit over an extended period rather than relying on Samsung's own marketing claims. Where GSMArena and Tom's Guide's findings genuinely diverge — sustained-load throttling and screen brightness, in particular — we've reported both rather than picking a side, since they used different test methodologies and both are plausible for their respective conditions. UK pricing is Samsung's own confirmed launch pricing, checked July 2026; street-price discounts reported by aggregator sites were not independently verified for this review and should be checked live before buying.