When should I choose Samsung Galaxy S26 Ultra?

Demanding gaming and heavy multitasking. Users who want the fastest raw performance. S Pen productivity and note-taking. Deep Samsung ecosystem integration. Privacy-focused display needs. Low-light photography with f/1.4 aperture. Future-proof performance via customized chip. One UI 8 customization fans. Galaxy AI on-device features. Users upgrading from older Galaxy S Ultra models. Performance benchmarks enthusiasts. Those who prefer Samsung's software support.

When should I choose Xiaomi 17 Ultra?

Outdoor visibility with 3500 nits brightness. Mobile photography with 200MP continuous optical zoom. LOFIC technology for better dynamic range. Long battery life with 6800mAh capacity. Fast charging with 100W wired and 50W wireless. Leica-tuned camera experience. Mi HyperOS smart home integration. Flat display preference. HDR content consumption. Users who prioritize camera zoom over aperture. Travelers needing all-day battery. Users who want a lower starting price at 6999 RMB.

What are the advantages of Samsung Galaxy S26 Ultra over Xiaomi 17 Ultra?

The Samsung Galaxy S26 Ultra features a 6.9-inch LTPO AMOLED display with 2600 nits peak brightness, delivering vibrant visuals.. Its privacy display reduces side-angle visibility, enhancing privacy in public settings.. The 200MP main camera with an f/1.4 aperture excels in low-light photography.. The customized Snapdragon 8 Elite Gen 5 processor delivers a 40% performance improvement over its predecessor.. It offers up to 16GB RAM and 1TB storage for demanding multitasking and storage needs.. Integrated S Pen and Galaxy AI provide unique productivity and on-device AI features..

What are the advantages of Xiaomi 17 Ultra over Samsung Galaxy S26 Ultra?

The Xiaomi 17 Ultra features a 6.9-inch flat display with 3500 nits peak brightness, offering superior outdoor visibility and HDR content.. Its 200MP continuous optical zoom periscope lens enables versatile zoom photography without quality loss.. LOFIC technology enhances dynamic range and overall imaging performance.. The Leica Edition provides exclusive camera tuning and collaborations for professional-grade photos.. The fifth-generation Snapdragon 8 Elite processor, with up to 16GB RAM and 1TB storage, ensures smooth performance.. A massive 6800mAh battery with 100W wired and 50W wireless charging delivers exceptional endurance and speed.. Mi HyperOS offers seamless integration with Xiaomi's smart home and IoT ecosystem..

AI comparison report

Samsung Galaxy S26 Ultra vs Xiaomi 17 Ultra

By CompareAI Editorial Team · Published 2026-08-17 · How we compare

Choose the Samsung Galaxy S26 Ultra for raw performance and S Pen productivity, but the Xiaomi 17 Ultra for superior camera zoom, battery life, and brighter di…

Who wins: Samsung Galaxy S26 Ultra or Xiaomi 17 Ultra?

If you value a larger battery, faster charging, brighter display, and a more versatile zoom camera, choose the Xiaomi 17 Ultra first; but if raw performance, S Pen productivity, and privacy display are your priorities, the Samsung Galaxy S26 Ultra should come first.

Based on our analysis across 5 dimensions with 20 sources, Samsung Galaxy S26 Ultra scores 7.6/10 overall while Xiaomi 17 Ultra scores 8.6/10 overall.

Dimension	Samsung Galaxy S26 Ultra	Xiaomi 17 Ultra
Display and Viewing Experience	8/10	9/10
Camera Capabilities and Imaging Technology	8/10	9/10
Performance and Hardware	9/10	8/10
Battery Life and Charging Speed	5/10	9/10
Unique Features and Ecosystem Integration	8/10	8/10
Overall	7.6/10	8.6/10

Should I choose Samsung Galaxy S26 Ultra or Xiaomi 17 Ultra?

Verdict: If you value a larger battery, faster charging, brighter display, and a more versatile zoom camera, choose the Xiaomi 17 Ultra first; but if raw performance, S Pen productivity, and privacy display are your priorities, the Samsung Galaxy S26 Ultra should come first.

Choose the Samsung Galaxy S26 Ultra for raw performance and S Pen productivity, but the Xiaomi 17 Ultra for superior camera zoom, battery life, and brighter display.

The Samsung Galaxy S26 Ultra and Xiaomi 17 Ultra are both flagship powerhouses, but they excel in different areas. The Galaxy S26 Ultra's customized Snapdragon 8 Elite Gen 5 delivers a 40% performance boost over the standard fifth-generation Snapdragon 8 Elite in the Xiaomi, making it the better choice for gaming and future-proofing. It also offers a 200MP main camera with a wider f/1.4 aperture for low-light shots, a privacy display (2600 nits), S Pen support, and Galaxy AI. However, the Xiaomi 17 Ultra counters with a significantly larger 6800mAh battery versus the Galaxy's 5000mAh, 100W wired and 50W wireless charging versus 45W and 30W, and a brighter 6.9-inch flat display at 3500 nits. Its 200MP continuous optical zoom periscope lens and LOFIC technology provide unmatched zoom flexibility and dynamic range, while the Leica Edition adds premium camera tuning. Starting at 6999 RMB, the Xiaomi also undercuts the Galaxy in price. Therefore, if you prioritize performance and productivity tools, the Galaxy S26 Ultra wins; if you prioritize photography, battery endurance, and outdoor visibility, the Xiaomi 17 Ultra is the better flagship.

Best for Samsung Galaxy S26 Ultra

Demanding gaming and heavy multitasking
Users who want the fastest raw performance
S Pen productivity and note-taking
Deep Samsung ecosystem integration
Privacy-focused display needs
Low-light photography with f/1.4 aperture
Future-proof performance via customized chip
One UI 8 customization fans
Galaxy AI on-device features
Users upgrading from older Galaxy S Ultra models
Performance benchmarks enthusiasts
Those who prefer Samsung's software support

Best for Xiaomi 17 Ultra

Outdoor visibility with 3500 nits brightness
Mobile photography with 200MP continuous optical zoom
LOFIC technology for better dynamic range
Long battery life with 6800mAh capacity
Fast charging with 100W wired and 50W wireless
Leica-tuned camera experience
Mi HyperOS smart home integration
Flat display preference
HDR content consumption
Users who prioritize camera zoom over aperture
Travelers needing all-day battery
Users who want a lower starting price at 6999 RMB

When not to compare directly

Do not compare directly if you rely heavily on Samsung's S Pen, One UI ecosystem, or Galaxy AI, or if you are deeply invested in Xiaomi's Leica collaboration and Mi HyperOS smart home ecosystem; these unique features can outweigh spec differences.

What are the key differences between Samsung Galaxy S26 Ultra and Xiaomi 17 Ultra?

Display and Viewing Experience

The Samsung Galaxy S26 Ultra offers a privacy display with reduced side-angle visibility, while the Xiaomi 17 Ultra has a higher peak brightness of 3500 nits compared to 2600 nits, making the Xiaomi better for outdoor use.
Samsung Galaxy S26 Ultra: The Samsung Galaxy S26 Ultra features a 6.9-inch LTPO AMOLED display with 2600 nits peak brightness and a privacy display that reduces side-angle visibility, enhancing privacy in public settings.
Xiaomi 17 Ultra: The Xiaomi 17 Ultra features a 6.9-inch flat display with 3500 nits peak brightness, offering higher brightness for better outdoor visibility and HDR content.
Scores — Samsung Galaxy S26 Ultra: 8/10, Xiaomi 17 Ultra: 9/10
The display is the primary interface for all interactions, affecting media consumption, gaming, and overall usability.
Sources: 三星新机皇Galaxy S26 Ultra屏幕逆天了!galaxy三星_新浪科技_新浪网, TCL华星独供Xiaomi 17 Ultra系列新品
Camera Capabilities and Imaging Technology

While both Samsung Galaxy S26 Ultra and Xiaomi 17 Ultra have 200MP main cameras, Xiaomi 17 Ultra uniquely offers 200MP continuous optical zoom and LOFIC technology, whereas Samsung's main advantage is its f/1.4 aperture for low-light performance.
Samsung Galaxy S26 Ultra: Samsung Galaxy S26 Ultra features a 200MP main camera with an f/1.4 aperture, announced in February 2026. It is positioned as a photography upgrade for beginners, with improvements over its predecessor.
Xiaomi 17 Ultra: Xiaomi 17 Ultra, released in December 2025, introduces a 200MP continuous optical zoom periscope lens and LOFIC technology, with a starting price of 6999 RMB.
Scores — Samsung Galaxy S26 Ultra: 8/10, Xiaomi 17 Ultra: 9/10
Camera performance is often the decisive factor for flagship buyers who want the best photography and videography.
Sources: Xiaomi 17 Ultra正式发布,再次抬高移动影像上限,售价 6999 起, Galaxy S26 Ultra成为摄影新手救星的关键升级
Performance and Hardware

The Samsung Galaxy S26 Ultra's customized Snapdragon 8 Elite Gen 5 offers a 40% performance boost over the standard fifth-generation Snapdragon 8 Elite in the Xiaomi 17 Ultra, making it the more powerful device for demanding tasks.
Samsung Galaxy S26 Ultra: The Samsung Galaxy S26 Ultra, announced in February 2026, is powered by a customized Snapdragon 8 Elite Gen 5 processor, which is reported to deliver a 40% performance improvement over its predecessor, with RAM options up to 16GB and storage up to 1TB.
Xiaomi 17 Ultra: The Xiaomi 17 Ultra, released in December 2025, features the fifth-generation Snapdragon 8 Elite processor, with RAM options up to 16GB and storage up to 1TB, and includes a 6,800mAh battery with 100W charging, but its performance is slightly lower than the Galaxy's customized chip.
Scores — Samsung Galaxy S26 Ultra: 9/10, Xiaomi 17 Ultra: 8/10
Raw performance determines multitasking efficiency, gaming smoothness, and future-proofing.
Sources: 三星S26 Ultra性能全面领先, Xiaomi 17 Ultra正式发布,再次抬高移动影像上限,售价 6999 起
Battery Life and Charging Speed

The Xiaomi 17 Ultra offers a significantly larger 6800mAh battery and faster 100W wired charging compared to the Samsung Galaxy S26 Ultra's 5000mAh battery and 45W wired charging.
Samsung Galaxy S26 Ultra: The Samsung Galaxy S26 Ultra features a 5000mAh battery with 45W wired and 30W wireless charging, as reported in available sources.
Xiaomi 17 Ultra: The Xiaomi 17 Ultra features a 6800mAh battery with 100W wired and 50W wireless charging, as reported in available sources.
Scores — Samsung Galaxy S26 Ultra: 5/10, Xiaomi 17 Ultra: 9/10
Battery endurance and charging convenience directly impact daily usage and travel readiness.
Sources: Xiaomi 17 Ultra正式发布,再次抬高移动影像上限,售价 6999 起, 三星S26 Ultra正式发布:与S25 Ultra对比升级了哪里?
Unique Features and Ecosystem Integration

The Samsung Galaxy S26 Ultra's S Pen and Galaxy AI provide unique productivity tools, while the Xiaomi 17 Ultra's Leica Edition and Mi HyperOS offer superior camera tuning and ecosystem integration, with the Xiaomi featuring a 200MP continuous optical zoom lens.
Samsung Galaxy S26 Ultra: The Samsung Galaxy S26 Ultra, announced in February 2026, integrates the S Pen, One UI 8, and Galaxy AI, offering exclusive productivity and AI features. Its privacy display reduces side-angle visibility, and it features a 200MP main camera with f/1.4 aperture. Galaxy AI enhances on-device tasks, while One UI 8 provides deep customization and ecosystem integration with other Samsung devices.
Xiaomi 17 Ultra: The Xiaomi 17 Ultra, released in December 2025, features a Leica Edition with exclusive camera tuning and collaborations, running Mi HyperOS. It includes a 200MP continuous optical zoom periscope lens with LOFIC technology, a 6.9-inch flat display with 3,500 nits peak brightness, and a 6,800mAh battery with 100W charging. Mi HyperOS offers seamless integration with Xiaomi's ecosystem, including smart home and IoT devices.
Scores — Samsung Galaxy S26 Ultra: 8/10, Xiaomi 17 Ultra: 8/10
Exclusive features and ecosystem ties can sway the decision beyond basic specs.
Sources: Xiaomi 17 Ultra正式发布,再次抬高移动影像上限,售价 6999 起, 三星S26 Ultra正式发布:与S25 Ultra对比升级了哪里?

What are the pros and cons of Samsung Galaxy S26 Ultra vs Xiaomi 17 Ultra?