Samsung Galaxy S26 Ultra vs Galaxy S25 Ultra: All the differences

Slight design changes, faster charging, new display features and new camera optics.

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By , with contribution from
Orhan Chakarov
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Samsung Galaxy S26 Ultra vs Galaxy S25 Ultra rear comparison
The Galaxy S26 Ultra on the left and S25 Ultra on the right. | Image by PhoneArena
Samsung's new Galaxy S26 Ultra comes with a more powerful chipset, a built-in privacy display, faster charging and improved camera optics, but are those changes enough to interest Galaxy S25 Ultra owners?

The Galaxy S25 Ultra is no slouch itself. It remains one of the strongest Android flagships on the market, not that far behind its successor. The Snapdragon 8 Elite is more than capable, the display is one of the best and the brightness numbers have not changed, plus it has reliable battery life, and it tops the camera performance charts.

So, is the S26 Ultra worthy of being next in line?

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Samsung Galaxy S25 Ultra

6.9-inch
Quad camera
5000 mAh
12GB
$1200 at BestBuy

Galaxy S26 Ultra vs Galaxy S25 Ultra differences:


Table of Contents:

Design and Size

A lighter build and a new look for the cameras


Last year, Samsung massively reduced the thickness and weight of the Ultra model, so I didn’t expect the company to push even further on that front with this year’s model. Yet it has. Samsung has managed to reduce the thickness to just 7.9 mm, down from 8.2 mm on the S25 Ultra (8.6 mm on the S24 Ultra). The new model also weighs only 214 grams, 4 grams less than the S25 Ultra.

All of these reductions might not sound impressive at first, but keep in mind that these changes were one of the S25 Ultra’s strongest selling points back in 2025, and already massively impressive.



However, the more visibly striking change will be the new design of the back panel. More specifically, the cameras are not inside a camera island, distinguishing the new model from the S25 Ultra, which comes with the “floating” cameras.

If you are an avid fan of the S Pen, rest assured—it is still here. Also, the frame keeps its squared-off profile with rounded corners, and the phone remains IP68-rated for water and dust resistance.

Display Differences



It is great for marketing when you can boast about higher numbers, like 3,000 nits of peak brightness, for example. But Samsung is not doing that with the S26 Ultra. While the phone comes with the same peak brightness as its predecessor, it introduces a cool new feature—Privacy Display.


When enabled, Privacy Display narrows side viewing angles so the screen is harder to read from off-axis while keeping the image clear head-on. Samsung positions this as a built-in privacy layer rather than a software trick, and it can be customized to activate in specific moments like typing a PIN or when opening specific apps. Users can also choose between different strengths.

Everything else about the Ultra’s display will sound familiar to fans: 1440 x 3120 pixel resolution, adaptive 1 to 120 Hz refresh rate, and the same anti-reflective coating that the Ultra is now known for.

Display Measurements:



One slight disappointment is the unchanged peak screen brightness. Samsung claims the screen reach 2,600 nits, but we guess that's tested against a tiny white spot. On our standardized 20% white level test (the rest of the screen is black), the S26 Ultra scored in the 2,400 nits vicinity, on par with the S25 Ultra. However, other phones like the Pixel 10 Pro XL can hit noticeably higher numbers, reaching 2,800 nits or even higher, which helps for outdoor use.

Performance and Software

Snapdragon for all regions, better heat management

The S26 Ultra comes with Qualcomm’s Snapdragon 8 Elite Gen 5 for Galaxy no matter where you buy it from. Samsung still refrains from splitting the chipsets with Exynos versions for the Ultra. That’s not the case with the S26 and S26 Plus, which are Snapdragon in the US, China, and Japan, and Exynos 2600 in Europe.

Performance-wise, Samsung says the S26 Ultra has a 19% faster CPU, a 24% stronger GPU, and a 39% improved NPU (responsible for AI features) compared to the Galaxy S25 Ultra. Clearly, the focus was on improving the performance of AI-related functions.

There is also a redesigned vapor chamber and other small improvements to help the S26 Ultra maintain peak performance levels for longer than the S25 Ultra.


As for the storage and memory, Samsung keeps the same simple rule: 256 GB and 512 GB models come with 12 GB RAM, while the 1 TB model comes with 16 GB RAM. For now, I assume the storage type is UFS 4.0, although this is still not confirmed at this stage.

When it comes to software, the S26 Ultra launches with Android 16 and One UI 8.5, backed by Samsung’s seven-year OS and security update commitment.

There are no AI features that won’t be available on the S25 Ultra. Both phones come with Samsung’s Now Brief and Now Bar experiences (plus the new Now Nudge behaviors) that surface relevant actions and information throughout the day. Samsung explicitly mentioned Gemini and Perplexity integration alongside its own tools too.

CPU Performance Benchmarks:


Geekbench 6
Single Higher is better
Samsung Galaxy S26 Ultra3753
Samsung Galaxy S25 Ultra3137
Geekbench 6
MultiHigher is better
Samsung Galaxy S26 Ultra11259
Samsung Galaxy S25 Ultra9769


The S26 Ultra scores a nearly 20% improvement in single-core CPU performance, the type of benchmark that corresponds closest to app launch times and perceived daily use speed. That's a big improvement.

Multi-core CPU performance, which is responsible for more demanding tasks, is also up by a similar margin.

GPU Performance:


3DMark Extreme(High)Higher is better
Samsung Galaxy S26 Ultra7801
Samsung Galaxy S25 Ultra6208
3DMark Extreme(Low)Higher is better
Samsung Galaxy S26 Ultra3741
Samsung Galaxy S25 Ultra2981

Gamers also see a massive boost in performance with this new chip. The S26 Ultra starts with a burst of performance, hitting nearly 8,000 points on 3D Mark Wildlife Extreme, but it also quickly throttles to less than half that score. After 20 minutes of heavy-duty gaming, the S26 Ultra is down to 3,741 points. That's still a solid score compared to the nearly 3,000 points of the previous generation, a leap of nearly 20%.

Still, we have seen dedicated gaming phones like the RedMagic 11 Por hold that score of nearly 7,000 points throughout the whole benchmark thanks to better cooling and a roomier design.

Camera

Same image sensors but with more capable optics


The S26 Ultra’s cameras will sound very familiar: a 200 MP main camera, a 50 MP ultrawide, a 10 MP 3x telephoto and a 50 MP 5x telephoto.

But don’t be quick to judge Samsung for not changing anything. The 5x telephoto and main cameras now come with new lenses that capture more light. With more light hitting those sensors, we should see a visible improvement to the image quality, especially in darker conditions. The jump will be especially noticeable on the 5x telephoto.

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Samsung is also leaning harder into creator-focused video tools this year. The Galaxy S26 Ultra supports 8K recording at 30 fps and adds 4K recording at up to 120 fps in Pro Video mode. It also introduces support for APV, which stands for Advanced Professional Video. APV is a new high-quality video format designed to preserve more detail, dynamic range, and color information during recording, giving users more control during their workflow.

This makes the S26 Ultra better suited for serious content creation because it allows users to edit footage with more flexibility in post-production.

Galaxy S26 Ultra vs Galaxy S25 Ultra camera samples:



The S26 Ultra camera fixes my biggest gripe with the camera of its predecessor — its consistently low exposure. Photos from the S26 Ultra look brighter and more cheerful.

In low light, the faster aperture on the main and 5x cameras results in better detail. Basically, the S26 Ultra is much more efficient with light. When I put them head-to-head, the S26 Ultra kept the images cleaner. Both shot at the same shutter speed, but the newer model uses a lower ISO for a cleaner shot.

You see that same edge with the 5x zoom, too. But the real "wow" factor is in the dark: both phones capture a ton of light at night, but the S26 Ultra snaps the photo almost twice as fast as the S25. That extra speed is the difference between a sharp late-night shot and a blurry mess.

Battery Life and Charging

Same battery capacity, but with faster wired and wireless charging


For yet another year, Samsung has decided to keep the same 5,000 mAh battery inside the Ultra, so if we see any improvements, they will most likely come from the new chipset.

However, the difference between the S26 Ultra and the S25 Ultra is that the new model comes with Samsung’s Super Fast Charging 3.0, which basically means you get 60W wired charging. Samsung claims this is enough to charge the S26 Ultra to 75% in roughly 30 minutes under “optimal conditions.” 

PhoneArena Battery and Charging Test Results:


Battery Life
Charging
Phone Battery Life
estimate
Browsing Video Gaming
Samsung Galaxy S26 Ultra
5000 mAh
7h 35min 20h 10min 9h 54min 9h 17min
Samsung Galaxy S25 Ultra
5000 mAh
8h 0min 20h 49min 8h 54min 14h 21min
Phone Full Charging 30 min Charge
Wired Wireless Wired Wireless
Samsung Galaxy S26 Ultra
5000 mAh
0h 49min Untested 78% Untested
Samsung Galaxy S25 Ultra
5000 mAh
1h 9min 1h 58min 68% 33%
Find out more details about battery and charging for all phones we have tested on our PhoneArena Battery Score page

Wireless charging also takes a major step forward to up to 25W vs 15W on the predecessor, alongside Wireless PowerShare for reverse wireless charging (no changes there).


There is still no built-in magnetic alignment system. If you want that on an Android, you are still limited to case-based solutions or a Google Pixel 10.

Specs Comparison


Samsung Galaxy S26 Ultra Samsung Galaxy S25 Ultra
Design
Dimensions
163.6 x 78.1 x 7.9 mm (~10 mm with camera bump) 162.8 x 77.6 x 8.2 mm (~9.1 mm with camera bump)
Weight
214.0 g 218.0 g
Display
Size
6.9-inch 6.9-inch
Type
Dynamic AMOLED, 120Hz Dynamic AMOLED, 120Hz
Hardware
System chip
Snapdragon 8 Elite Gen 5 for Galaxy SM8850-1-AD (3 nm) Snapdragon 8 Elite for Galaxy SM8750-AB (3 nm)
Memory
12GB (LPDDR5X)/256GB (UFS 4.0)
12GB/512GB
16GB/1024GB
12GB (LPDDR5X)/256GB (UFS 4.0)
12GB/512GB
12GB/1024GB
Battery
Type
5000 mAh 5000 mAh
Charge speed
Wired: 60.0W
Wireless: 15.0W
Wired: 45.0W
Wireless: 15.0W
Camera
Main camera
200 MP (OIS, PDAF)
Sensor name: Samsung ISOCELL HP2
Aperture size: F1.4
Focal length: 23 mm
Sensor size: 1/1.3"
Pixel size: 0.6 μm
200 MP (OIS, Laser and PDAF)
Sensor name: Samsung ISOCELL HP2
Aperture size: F1.7
Focal length: 24 mm
Sensor size: 1/1.3"
Pixel size: 0.6 μm
Second camera
50 MP (Ultra-wide, PDAF)
Sensor name: Samsung JN3
Aperture size: F1.9
Sensor size: 1/2.5"
Pixel size: 0.7 μm
50 MP (Ultra-wide, PDAF)
Sensor name: Samsung JN3
Aperture size: F1.9
Pixel size: 0.7 μm
Third camera
10 MP (Telephoto, OIS, PDAF)
Sensor name: Sony IMX754
Optical zoom: 3.0x
Aperture size: F2.4
Sensor size: 1/3.94"
Pixel size: 1.12 μm
10 MP (Telephoto, OIS, PDAF)
Sensor name: Sony IMX754
Optical zoom: 3.0x
Aperture size: F2.4
Focal Length: 67 mm
Sensor size: 1/3.52"
Pixel size: 1.12 μm
Fourth camera
50 MP (Telephoto, Periscope, OIS, PDAF)
Sensor name: Sony IMX854
Optical zoom: 5.0x
Aperture size: F2.9
Focal Length: 115 mm
Sensor size: 1/2.52"
Pixel size: 0.7 μm
50 MP (Telephoto, Periscope, OIS, PDAF)
Sensor name: Sony IMX854
Optical zoom: 5.0x
Aperture size: F3.4
Focal Length: 111 mm
Sensor size: 1/2.52"
Pixel size: 0.7 μm
Front
12 MP (PDAF, HDR) 12 MP (PDAF, HDR)

Summary



The Galaxy S26 Ultra brings a few notable upgrades like faster charging, a faster processor that’s much better at AI, and a new and unique privacy feature. We also have improved optics for the main and 5x telephoto cameras. All great stuff!

Now, whether the new model is worth upgrading to if you own the S25 Ultra—I don’t think so. We no longer live in an age where each new generation can justify such an early upgrade. It doesn’t look like there is any danger of FOMO with the S26 Ultra.

Still, I deem the Galaxy S26 Ultra a worthy successor to the S25 Ultra, and for anyone entering the Ultra lineup now, it is undoubtedly worth the purchase. You will get the cleanest, most complete version of Samsung’s 2026 flagship vision, and it arrives at the same $1,299 starting price, which is arguably the best part about this release.

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