Samsung Galaxy S26 Ultra vs Galaxy S25 Ultra – Which Ultra Phone to Buy in 2026?
The Samsung Galaxy S Ultra series brings to mind the most premium category of Android flagship smartphones. Ultra models are especially attractive to those who want features like a large display, powerful processor, advanced camera, S Pen, and Galaxy AI in one phone. After the introduction of the Galaxy S26 Ultra in 2026, there is an important question for those who already use the Galaxy S25 Ultra and those who are thinking of buying a new flagship phone. Samsung Galaxy S26 Ultra vs Galaxy S25 Ultra – Which phone is better to buy?
From the outside, the two phones belong to the same family, so the design and overall experience may be similar in some places. But if you go inside, the S26 Ultra brings some important improvements in areas like the processor, camera system, thermal management, display technology, charging, Galaxy AI, and overall design.
The Galaxy S25 Ultra is no ordinary old flagship phone. It is an even more powerful smartphone with features like Snapdragon 8 Elite for Galaxy processor, 200MP main camera, 50MP ultra-wide camera, 5x telephoto, 3x telephoto, 6.9-inch QHD+ Dynamic AMOLED 2X display and 5,000mAh battery.
At the same time, the Galaxy S26 Ultra brings new generation hardware. It includes Snapdragon 8 Elite Gen 5 for Galaxy processor, improved camera apertures, new camera design, 6.9-inch display, 5,000mAh battery, 60W wired charging and new Galaxy AI experiences.
So, in this comparison, rather than choosing the winner by looking at specifications alone, let’s look at these two Ultra phones based on camera, display, performance, gaming, battery, S Pen, AI and everyday usage.
Galaxy S26 Ultra vs Galaxy S25 Ultra – What is the key difference?
First, let’s understand these two smartphones from a simple perspective.
The Galaxy S25 Ultra is the 2025 generation flagship.
The Galaxy S26 Ultra is the next 2026 generation flagship.
The S25 Ultra uses the Snapdragon 8 Elite for Galaxy processor. The S26 Ultra uses the new Snapdragon 8 Elite Gen 5 for Galaxy processor.
There is also a significant change in the camera system. The S25 Ultra has a 200MP wide camera, 50MP ultra-wide camera, 50MP 5x telephoto and 10MP 3x telephoto camera. Although the 200MP main camera continues in the S26 Ultra, improvements have been made to the ultra-wide and telephoto cameras. In particular, the aperture of the main and telephoto cameras is wider, which gives the new model an advantage in low-light photography and video recording.
The display size is in the 6.9-inch class on both phones. But the S26 Ultra brings a new anti-reflective display experience and refined design.
The battery capacity is 5,000mAh on both phones. But the S26 Ultra has improved in charging speed.
So, rather than being a complete redesign, the S26 Ultra can be said to be a next-generation Ultra phone that builds on the strong foundation of the S25 Ultra and refines it in many areas.
Design – Galaxy S26 Ultra vs S25 Ultra
Design is the most important thing that determines the first impression of a smartphone.
The Galaxy S25 Ultra has a very premium titanium-style build and a boxy Ultra design. With its sharp edges and large camera setup, it looks like a professional flagship model.
Samsung has refined its design language even further with the S26 Ultra.
The new model uses rounded ergonomic corners and an ambient island camera design. Samsung calls it its slimmest Ultra design. The S26 Ultra is 7.9mm thick and 214g in weight.
The S25 Ultra is about 8.2mm thick and 218g in weight.
This makes the S26 Ultra slightly thinner and lighter.
While this difference may seem small on paper, the weight and edge design can make a practical difference when you hold the phone in your hand every day.
If you are a fan of the sharp, boxy design of the S25 Ultra, the new S26 Ultra design may seem different to you.
But for those who want a comfortable grip and a slightly lighter body, the S26 Ultra has the advantage.
Design winner: Galaxy S26 Ultra
Display – Larger AMOLED screen on both phones
The biggest attraction of the Ultra series is its display.
The Galaxy S25 Ultra has a 6.9-inch QHD+ Dynamic AMOLED 2X display. With adaptive refresh rate support from 1Hz to 120Hz, scrolling is smooth and battery usage is efficient when viewing static content.
The Galaxy S26 Ultra also has a 6.9-inch QHD+ Dynamic AMOLED 2X display and 120Hz adaptive refresh rate.
So, if you look at the basic display specifications alone, there is not much difference between the two phones.
Both phones are excellent when watching movies, watching YouTube videos, gaming, or reading documents.
But the S26 Ultra’s display has new features like anti-reflective treatment and improved privacy-oriented technology. Samsung has introduced built-in Privacy Display technology in the S26 Ultra.
Some users may find it useful to increase privacy by not allowing others to see the screen content when using the phone in public places.
The S25 Ultra display is already so good that existing S25 Ultra users don’t need to upgrade just for the display.
Display winner: Galaxy S26 Ultra – but the S25 Ultra is still excellent
Performance – Snapdragon 8 Elite vs Snapdragon 8 Elite Gen 5
The S26 Ultra gets a major upgrade in the performance department.
The Galaxy S25 Ultra uses the Snapdragon 8 Elite for Galaxy processor.
This processor is the most powerful in flagship Android performance in 2025.
It can handle gaming, multitasking, photo editing, video editing, and AI tasks all smoothly.
Even in 2026, the S25 Ultra performance cannot be said to be outdated.
But the Galaxy S26 Ultra has the new Snapdragon 8 Elite Gen 5 for Galaxy processor.
According to Samsung, the new processor offers significant improvements in CPU, GPU, and NPU performance. Specifically, Samsung states that CPU performance has increased by up to 19% and NPU performance by up to 39%.
What is the practical advantage of this?
Apps can open faster.
Heavy multitasking can be smooth.
AI features can run more responsively in the background.
Gaming performance can also increase.
Additional headroom is available for video editing and demanding applications.
The difference may not be immediately noticeable to a normal user.
The S25 Ultra is already fast when opening WhatsApp, scrolling through Instagram, or watching YouTube.
But for heavy users and long-term users, the S26 Ultra processor advantage is meaningful.
Performance winner: Galaxy S26 Ultra
Gaming – S26 Ultra vs S25 Ultra
The Ultra series is very attractive to Android gaming enthusiasts.
The S25 Ultra’s Snapdragon 8 Elite processor will run high-end games smoothly.
The large 6.9-inch 120Hz display makes the gaming experience more immersive.
The S25 Ultra also offers good performance for users using high graphics settings.
The S26 Ultra not only has the new Snapdragon 8 Elite Gen 5 processor, but also improvements have been made to thermal management.
Samsung says it has used a larger Vapor Chamber and improved thermal interface material. This helps spread heat better and maintain consistent performance during long gaming sessions.
This difference is important for serious gamers.
A 20-minute game session is not the same as a 2-hour gaming session.
Performance can throttle as temperatures rise during long gaming sessions.
So the improved cooling system is a practical advantage for the S26 Ultra.
If you are a casual gamer, the S25 Ultra is sufficient.
If you are a heavy gamer, the S26 Ultra is better.
Gaming winner: Galaxy S26 Ultra
Camera – What’s changed in the S26 Ultra?
The camera comparison is the most interesting thing about these two phones.
The Galaxy S25 Ultra already has a 200MP main camera.
It also has a 50MP ultra-wide, 50MP 5x telephoto and 10MP 3x telephoto camera system.
This setup is very flexible for travel photography, portrait photography, landscape photos, macro-style shots and zoom photography.
The Galaxy S26 Ultra also continues with the 200MP main camera.
But Samsung has made improvements in the aperture and camera processing.
The S26 Ultra’s 200MP main camera has an F1.4 aperture. The telephoto camera has an F2.9 aperture. The ultra-wide camera uses a 50MP F1.9 setup.
Opening the aperture wider helps the camera sensor get more light.
The benefit of this is more visible in low-light photography.
Night photos can be brighter.
Detail in shadows can be improved.
Video recording may reduce noise.
This means the S26 Ultra has a meaningful refinement in its camera hardware.
Daylight Photography
The Galaxy S25 Ultra already takes excellent photos in bright daylight.
The 200MP main camera can capture more detail.
Image quality is strong in landscape photos, buildings, nature, and outdoor portraits.
The S26 Ultra also continues to use the 200MP sensor, so there is no major change in megapixel count.
But newer processing and an improved aperture can result in refinements in colors, dynamic range, and fine details.
A casual user may not notice a big difference unless they look at photos taken on the two phones side-by-side.
But photography enthusiasts and users who see pixel-level detail will find the newer model improvements useful.
Night Photography
The S26 Ultra has a big advantage in night photography.
The main reason for this is the improved aperture.
The S26 Ultra’s main camera has an F1.4 aperture.
This allows more light to reach the sensor in low-light conditions.
The S25 Ultra’s main camera has an F1.7 aperture.
While this difference may seem small in numbers, it can be meaningful in camera performance.
The S26 Ultra is more likely to deliver brighter and cleaner images in situations like restaurants, night streets, indoor events, and evening photography.
Samsung’s improved ProVisual Engine and AI image processing also help improve this experience.
Night camera winner: Galaxy S26 Ultra
Zoom Photography – S25 Ultra is still strong
Zoom is the signature feature of the Samsung Ultra series.
The S25 Ultra has a 5x optical zoom telephoto and a 3x optical zoom telephoto.
The S26 Ultra continues to have 3x and 5x optical zoom options.
So there’s not much change to the basic zoom hardware experience.
But the S26 Ultra’s telephoto aperture improvements could give it an advantage in low-light zoom photography.
2x and 10x optical-quality zoom options are also available with Adaptive Pixel technology. Digital zoom goes up to 100x.
Samsung’s 100x Space Zoom is very popular in situations like moon photography or distant objects.
But don’t expect 100x zoom to deliver professional-quality photos in all situations.
For practical photography, 3x and 5x zoom are more useful.
Zoom: Both are strong; S26 Ultra advantage in low-light zoom
Portrait Photography
Lens selection is crucial in portrait photography.
The S25 Ultra’s 3x and 5x telephoto cameras offer multiple framing options for portrait shots.
The subject can be captured from a natural-looking perspective.
The S26 Ultra continues this flexibility and refines portrait quality with improved camera aperture and processing.
The S26 Ultra may have an advantage in areas such as skin tones, background separation, and low-light portraits.
Both phones are excellent for social media portraits and family photos.
The S26 Ultra is a better choice for professional photography enthusiasts.
Video Recording – Which Ultra is Better?
Samsung Ultra phones are not only powerful in photography but also in video recording.
The S25 Ultra offers high-resolution video recording, stabilization, and advanced shooting modes.
This is enough to create YouTube videos, travel vlogs, Instagram Reels, and family videos.
The S26 Ultra has improved camera sensors and aperture, which improves low-light video quality.
AI ISP improvements have also been brought to the front camera. Samsung says that the S26 Ultra’s 12MP front camera uses an AI image signal processor to better balance highlights and shadows.
This is useful for video creators.
The S26 Ultra is particularly good for creators who do indoor shooting and night video recording.
Selfie Camera
Both phones have a 12MP front camera.
So there’s not a big difference in megapixel count.
But the use of AI ISP in the S26 Ultra front camera is a new advantage.
This helps balance highlights and shadows in selfies.
When taking an outdoor selfie, face exposure can be better even when there’s bright sunlight behind you.
This is also useful for video calls and social media creators.
Selfie winner: Galaxy S26 Ultra
Battery – 5,000mAh on both phones
In the battery capacity comparison, both phones have a 5,000mAh battery.
The S25 Ultra has a 5,000mAh battery.
The S26 Ultra also continues to have a 5,000mAh battery.
So, if you look at the battery capacity alone, there is no upgrade.
But due to processor efficiency and software optimization, the S26 Ultra may offer improvements in battery endurance.
Samsung claims up to 31 hours of video playback for the S26 Ultra, but actual battery life will vary depending on network, brightness, apps, gaming, and usage pattern.
For a heavy user, the S26 Ultra efficiency advantage is useful.
But the S25 Ultra battery life is already strong.
Battery winner: Galaxy S26 Ultra – due to efficiency advantage
Charging – S26 Ultra’s key upgrade
The S26 Ultra has a clear improvement in the charging department.
While the S25 Ultra supports fast charging, the S26 Ultra supports wired charging up to 60W.
According to Samsung, the S26 Ultra can be charged up to 75% in about 30 minutes using a 60W adapter.
This is very useful for daily busy users.
If the phone battery is low in the morning, you can get more battery with a short charging session.
Fast charging is a practical advantage in travel and work situations.
This is a meaningful upgrade factor for S25 Ultra users.
Charging winner: Galaxy S26 Ultra
S Pen – Both Ultra phones
The unique feature of the Samsung Galaxy Ultra series is the S Pen.
The S25 Ultra has a built-in S Pen.
It is useful for writing notes, drawing on screenshots, marking up documents, and doing creative work.
S Pen support continues on the S26 Ultra.
This makes both phones strong for S Pen users.
If you use the S Pen a lot, you don’t have to make a phone selection based on the camera or processor alone.
You also need to consider how important the S Pen is to your productivity workflow.
Galaxy AI – The main strength of the S26 Ultra
AI is one of the key selling points of the S26 Ultra.
Samsung introduced the AI experience in a big way with the Galaxy S25 series.
The S25 Ultra includes features like Circle to Search, AI photo editing, writing assistance, and other Galaxy AI tools.
The S26 Ultra makes this AI experience more proactive and adaptive.
Samsung refers to the S26 series as a third-generation AI phone. The goal is to reduce the steps the user has to take by handling complex tasks in the phone background.
For example, AI assistance is increasingly integrated into information search, planning, content editing, and daily tasks.
The newer S26 Ultra has an advantage here as AI features could change smartphone usage in the future.
But S25 Ultra users already have access to many AI features.
So there’s no need to upgrade from the S25 Ultra just because of AI.
Privacy Display – New feature of S26 Ultra
Privacy is a new focus on the Galaxy S26 Ultra.
Built-in Privacy Display technology helps you control the screen content from being viewed by others at side angles.
This is useful when using the phone in places like train, bus, airport, office or public places.
This feature is practical for users who view banking information, private messages and work documents in public places.
The S25 Ultra does not have this exact built-in privacy display experience.
This makes the S26 Ultra an interesting upgrade for privacy-sensitive users.
Storage – Which Ultra is more useful?
The S25 Ultra is available in 256GB, 512GB and 1TB storage options.
The S26 Ultra also comes in 256GB, 512GB and 1TB variants. The 1TB variant is available with a 16GB RAM configuration; some other configurations use 12GB RAM. Availability may vary by market.
256GB may be enough for a normal user.
Those who capture a lot of photos and 4K videos may want to consider 512GB.
1TB is useful for professional creators, photographers, and gamers.
Having more storage can reduce cloud storage dependency.
Software and Long-Term Usage
Since the Galaxy S25 Ultra is still a modern flagship, it is a device that can be used for a long time in terms of software support and security updates.
Since the S26 Ultra is a newer generation, it naturally has a longer future lifespan advantage.
If you plan to use the phone for 4 to 6 years, the newer model is the logical choice.
But S25 Ultra users don’t need to worry about software support right away.
Samsung has a strategy of providing long-term software support for flagship phones.
So both phones are suitable for long-term Android users.
Should Galaxy S25 Ultra owners upgrade to S26 Ultra?
There’s no straight “yes” or “no” to this question.
If you have a Galaxy S25 Ultra, it’s still an extremely powerful phone.
Camera excellent.
Display excellent.
Performance excellent.
S Pen excellent.
Battery good.
Galaxy AI features are there.
So for a normal user, the S26 Ultra upgrade isn’t necessary.
But if the features below are important to you, you can upgrade.
Improved low-light camera.
Newer Snapdragon processor.
Better thermal management.
Faster charging.
New Privacy Display.
New Galaxy AI experiences.
Slightly lighter and thinner design.
Future-oriented performance.
If you’re going to use these features on a daily basis, the S26 Ultra is a meaningful upgrade.
Which phone should you buy for a new buyer?
If you’re buying the Ultra series for the first time, the decision is a bit easier.
If the price difference is reasonable, the Galaxy S26 Ultra is the better long-term choice.
It has a newer processor.
It has a newer camera system.
It has faster charging.
It has newer AI features.
It has new technology like Privacy Display.
It is also better for long-term usage.
But the situation may change if the S25 Ultra is available at a huge discount.
Buying a flagship phone at a lower price is a smart decision for value-conscious buyers.
Since the S25 Ultra’s performance is still excellent, it is very attractive at a discounted price.
Which Ultra is for Photography Lovers?
If photography is important to you, the S26 Ultra is better.
The improved aperture is especially useful for night photography and low-light video.
The S25 Ultra is also very capable due to its 200MP main camera and multiple telephoto cameras.
But the S26 Ultra’s newer camera processing and brighter aperture are the long-term advantage.
Photography winner: Galaxy S26 Ultra
Which Ultra is for gamers?
For heavy gamers, the S26 Ultra is the clear winner.
The newer Snapdragon processor and improved thermal system allow for better performance over long gaming sessions.
The S25 Ultra is more powerful for both casual and serious gaming.
But when future games become more demanding, the S26 Ultra will provide additional performance headroom.
Which Ultra is for business users?
Both phones are excellent for business users.
Both handle email, documents, video calls, multitasking, and productivity apps smoothly.
The Ultra series is very useful for notes and document work due to the S Pen and large display.
The S26 Ultra has an advantage for users who do sensitive work in public places due to the Privacy Display.
Which Ultra is best for students?
The S Pen is most useful for students.
Handwritten notes, PDF annotation, diagrams and quick notes can be done right on the phone.
The S25 Ultra already has this experience.
The S26 Ultra has additional advantages due to its new processor and privacy features.
But if budget is important, the discounted S25 Ultra is a better choice.
Value for Money – S26 Ultra vs S25 Ultra
The winner in the value for money category depends on the price.
The S26 Ultra is technically the better phone.
But if it is at a higher price, the S25 Ultra may be a better value.
For example, if the S25 Ultra is available at a deep discount, you get the same 200MP camera, S Pen, 120Hz display, powerful processor and 5,000mAh battery.
Then you have to ask yourself whether you need the extra features of the new model.
If Privacy Display, 60W charging, improved low-light camera and the latest processor are important, the S26 Ultra is the one.
If you don’t need them, go for the S25 Ultra.
Samsung Galaxy S26 Ultra vs Galaxy S25 Ultra – Final Verdict
After looking at the full comparison, one thing becomes clear.
The Galaxy S26 Ultra is not just a complete replacement for the S25 Ultra.
It’s a refined next-generation Ultra.
The S26 Ultra has a new Snapdragon 8 Elite Gen 5 processor.
It has improved camera apertures.
It has better low-light photography.
It has new AI features.
It has a Privacy Display.
It has faster charging.
It has a thinner and lighter body.
It has improved thermal management.
At the same time, the S25 Ultra is still very powerful.
It has a 200MP camera.
It has a 50MP ultra-wide.
It has a 5x telephoto.
It has a 3x telephoto.
It has a 6.9-inch QHD+ 120Hz AMOLED display.
It has an S Pen.
It has a 5,000mAh battery.
It has a powerful Snapdragon processor.
So it is not right to say that the S25 Ultra is outdated in 2026.
Which Samsung Ultra Phone can you buy in 2026?
If you want the latest Samsung technology, the Galaxy S26 Ultra.
If you want the best performance, the Galaxy S26 Ultra.
If you do a lot of low-light photography, the Galaxy S26 Ultra.
If you want fast charging, the Galaxy S26 Ultra.
If you want the latest Galaxy AI features, the Galaxy S26 Ultra.
If you want a privacy-focused display, the Galaxy S26 Ultra.
But if you are looking for the best value and the S25 Ultra is available at a good discount, the Galaxy S25 Ultra is a very good option.
If you already have an S25 Ultra, you can continue to use it without upgrading if you do not need the new features.
Comparelyst.com Final Recommendation
If we look at these two phones from a Comparelyst.com perspective, the overall winner is Samsung Galaxy S26 Ultra.
In performance, S26 Ultra is ahead.
In camera, S26 Ultra is ahead.
In low-light photography, S26 Ultra has an advantage.
In charging, S26 Ultra is ahead.
In gaming, S26 Ultra is better.
In AI experience, S26 Ultra is newer generation.
In privacy features, S26 Ultra has an advantage.
In design, S26 Ultra is thinner and lighter.
In long-term usage, S26 Ultra is better.
But in value for money, Galaxy S25 Ultra is still strong.
If you get S25 Ultra at a big discount, it can be a smart purchase considering the capabilities of that phone.
So if you are a new buyer and budget is flexible, Galaxy S26 Ultra.
Budget-conscious buyer and good discount: Galaxy S25 Ultra.
Upgrade optional for S25 Ultra owners.
It is better to upgrade only if you really need the new processor, improved camera, faster charging, Privacy Display and the latest Galaxy AI features.
Frequently Asked Questions
- Galaxy S26 Ultra vs S25 Ultra – Which is better?
Overall features, performance, camera improvements and newer technology are the best.
2. Is the Galaxy S26 Ultra still a good phone in 2026?
Yes. The S25 Ultra is still a powerful flagship. It is very capable in terms of camera, display, S Pen, gaming and everyday usage.
3. Is the S26 Ultra camera better than the S25 Ultra?
Yes. Although both phones have a 200MP main camera, the S26 Ultra has an advantage, especially in low-light photography and video, due to its improved aperture and newer image processing.
4. How much battery does the S26 Ultra have?
The Galaxy S26 Ultra has a 5,000mAh typical battery.
5. How much battery does the S25 Ultra have?
The Galaxy S25 Ultra also has a 5,000mAh typical battery.
6. Does the S26 Ultra charge faster?
Yes. The S26 Ultra supports 60W wired charging. According to Samsung, it can charge up to 75% in about 30 minutes with a compatible 60W adapter.
7. Do both phones have an S Pen?
Yes. Both the Galaxy S25 Ultra and Galaxy S26 Ultra have built-in S Pen support.
8. Should you buy the S26 Ultra for gaming?
If you’re a heavy gamer, the S26 Ultra’s newer processor and improved thermal management are useful. For casual gaming, the S25 Ultra is sufficient.
9. Should you upgrade from the S25 Ultra to the S26 Ultra?
Not everyone needs to upgrade. If you need new camera improvements, faster charging, a newer processor, a Privacy Display, or the latest AI features, upgrading is meaningful.
10. Is the S26 Ultra a good value for money?
It’s a good choice when you consider the latest technology and long-term usage. But if the S25 Ultra is available at a big discount, the S25 Ultra could be a better value for value-conscious users.
11. Which Ultra phone should a new buyer buy in 2026?
If budget flexibility and the latest features are important, the Galaxy S26 Ultra is the one. If budget is important and the S25 Ultra is available at a good discount, the Galaxy S25 Ultra is the one to consider.
Final Thoughts
Samsung Galaxy S26 Ultra and Galaxy S25 Ultra are both premium Android flagship phones.
Since the Galaxy S26 Ultra is the latest generation, it brings improvements in many areas such as performance, camera, charging, AI, privacy and thermal management.
Although the Galaxy S25 Ultra is a generation older than it, its specifications are still very powerful.
So, just because a phone is new, there is no need to immediately replace the old flagship.
What matters is your actual usage.
If you use the camera a lot, then the S26 Ultra.
If you do a lot of gaming, then the S26 Ultra.
If you want fast charging and the latest AI features, then the S26 Ultra.
If you are looking for value for money, then the discounted S25 Ultra.
If you already have the S25 Ultra and it satisfies your needs, then continuing to use it is a smart decision.
Overall Winner: Samsung Galaxy S26 Ultra
Best Value Option: Galaxy S25 Ultra – If you get a good discount
Best for Camera: Galaxy S26 Ultra
Best for Gaming: Galaxy S26 Ultra
Best for Charging: Galaxy S26 Ultra
Best for S Pen: Both
Best for Long-Term Purchase: Galaxy S26 Ultra
Ultimately, when buying a smartphone, the best approach is to think not just about “which is the latest?” but also about “which features do I really need?”
When comparing phones on Comparelyst.com, it’s much easier to choose the right smartphone for you, not just by looking at the specification numbers, but also by considering camera, display, performance, battery, gaming, AI, S Pen, and everyday usability.
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