The Galaxy S26 Ultra looks identical to its predecessor. That's not marketing spin\u2014it's physics. The same 6.9-inch 3,120 x 1,440 display, the same 5,000mAh battery, the same 200MP main camera sensor. But beneath that familiar aluminum chassis lies a collection of stealth upgrades that only reveal themselves through precise measurement and careful observation.
Aluminum rebirth and the weight of invisibility
After two generations of titanium frames, Samsung returned to aluminum for 2026. The company claims this improves color-matching with the Gorilla Armor 2 panels, though on my black review unit, the difference is invisible to the naked eye. The S26 Ultra measures 7.9mm thick and weighs 214 grams\u2014down from 8.2mm and 218 grams. These are measurable differences, not perceptible ones.
The S-Pen storage slot remains unchanged functionally, but the more rounded corners now create a right and wrong way to insert it. Align the curve on the stylus with the phone's corner or it just looks wrong. Small details matter when you're charging $1,300.
The privacy display paradox
The Galaxy S26 Ultra's display has the same specs as the previous model, except now it comes with a built-in Privacy Display.
Sam Rutherford for Engadget
The 6.9-inch screen maintains 2,600 nits peak brightness and 120Hz variable refresh. The stealth upgrade is Samsung's Privacy Display technology. With a button press, the phone activates dual subpixel architecture\u2014narrow and wide pixels\u2014and turns off the wide ones when viewed from angles beyond head-on.
When activated, content fades to black at acute viewing angles. You might see UI outlines or bright spots depending on your content, but wider angles render everything fainter. Maximum Privacy Protection takes this further, graying out almost everything entirely.
Even on maximum protection, you can still make out some faint details. But good luck to anyone trying to glean any usable info while the Galaxy S26 Ultra's Privacy Display is on.
Sam Rutherford for Engadget
Standard Privacy Display mode has minimal impact on image quality and brightness. Maximum Protection reduces contrast and luminance noticeably. Samsung offers selective activation\u2014turn it on for notifications, specific apps like banking, or system prompts requiring PIN entry.
The technology works. It's just invisible when you want it to be. That's the point.
Snapdragon 8 Elite Gen 5: The AI engine you can't see
Apparently this is what Samsung's AI thinks a Pikachu sticker should look should look like.
Sam Rutherford for Engadget
The Snapdragon 8 Elite Gen 5 for Galaxy powers the S26 Ultra with 12GB or 16GB RAM and up to 1TB storage. The headline number is a 39 percent more powerful NPU compared to last year. This enables the stealth upgrades you can't see but can feel.
Geekbench 6 scores show 11,240 multi-core (up from 9,828) and 25,403 GPU (up from 19,863). These are incremental improvements. The real story is AI processing that makes features like Photo Assist genuinely useful.
Photo Assist now handles reflections, object removal, and natural language prompts for generating new elements. Want a hat on your pet? Type it. The Creative Studio playground lets you make wallpapers, stickers, and greeting cards. These aren't revolutionary\u2014they're evolutionary in ways that matter.
The S26 Ultra's Now Nudge feature uses AI to find and suggest relevant photos when you use the Samsung Keyboard.
Sam Rutherford for Engadget
Now Nudge surfaces relevant photos based on keyboard context\u2014borrowed from Google's Magic Cue but implemented well. Automated App Actions, the coolest new feature, isn't available yet. The bigger issue: almost all these features exist on rival devices like the Pixel 10 Pro. They're table stakes now, not upgrade drivers.
Cameras: The same sensors with some larger apertures
While the S26 Ultra has the same sensors as before, Samsung gave it wider apertures for its main and 5x telephoto cameras.
Sam Rutherford for Engadget
The sensors remain unchanged: 200MP main, 50MP 5x telephoto, 10MP 3x telephoto, 50MP ultra-wide, 12MP selfie. But the apertures widened: f/1.4 main (from f/1.7) and f/2.9 5x telephoto (from f/3.4). These are measurable differences that translate to better low-light performance.
In a dimmed room shot of Transformers, the S26 Ultra matched the Pixel 10 Pro aside from minor white balance differences. Details were sharp, noise was lower. The most impressive example: a challenging backlit shot of a Grogu doll where the S26 exposed Baby Yoda's face better than the P10 Pro.
Battery life: The invisible efficiency gain
The 5,000mAh battery delivers 30 hours and three minutes on our local video rundown test\u2014half an hour longer than the S25 Ultra. This comes entirely from the new chip's efficiency gains, not capacity increases. Only the OnePlus 15 and 15R have fared better.
Charging speeds jumped significantly: 60 watts wired (up from 45), 25 watts wireless (up from 20). The base S26 gets 25 watts wired and 15 wireless. These are real improvements if you have compatible chargers.
The S26 Ultra has significantly faster wired and wireless charging than its less expensive siblings. Though sadly, it still doesn't have a built-in ring for magnetic accessories.
Sam Rutherford for Engadget
Samsung still omits a built-in magnetic ring for Qi2 charging or accessories. The company claims this maintains thinness, but we got over the desire for needless sleekness years ago. You can add functionality with cases, but that's not a premium experience.
The phantom upgrade paradox
There's a strange feeling when testing phones like this. After setup and updates, you're doing the same things with the same apps as before. Google Maps, Gmail, mobile games\u2014your daily flow is unchanged from device to device.
But if you're paying attention, you notice higher framerates while gaming, sharper low-light photos, helpful AI suggestions surfacing relevant photos during text conversations. The S26 Ultra's biggest upgrade\u2014Privacy Display\u2014is designed to stop others from snooping. When it's on, you probably won't even notice it's there. That's the point.
The S26 Ultra is objectively better than last year's model. Faster, better low-light photos, smarter AI features. But it takes a discerning eye to spot and feel these differences, particularly if upgrading from a device only a year or two old.
So while the S26 Ultra remains the top pick for a phone that can do pretty much everything really well, in the grand scheme of things, it's more of a stealthy, undercover update than an eye-catching new crown jewel. The best features are the ones you can't see.
This article originally appeared on Engadget at https://www.engadget.com/mobile/smartphones/samsung-galaxy-s26-ultra-review-the-stealth-upgrade-140000629.html?src=rss
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