Galaxy S26 Ultra vs Xiaomi 17
In the flagship smartphone class, the Galaxy S26 Ultra and the Xiaomi 17 are natural rivals. It’s a balanced fight with different weapons. The Galaxy S26 Ultra relies on memory & storage, the Xiaomi 17 on battery & charging.
At a glance
- Performance Tie
- Memory & Storage Galaxy S26 Ultra wins
- Camera Galaxy S26 Ultra wins
- Battery & Charging Xiaomi 17 wins
- Memory & Storage4.5
- Camera10.0
- Battery & Charging3.7
- Memory & Storage3.6
- Camera3.6
- Battery & Charging7.6
Spec scores (0 to 10) are calculated from manufacturer specs against other models in the same class. See how the formula works. They are not reviews or user ratings.
Key Differences
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The Xiaomi 17 has 27% more battery capacity
Put simply, the Xiaomi 17 is far ahead here: 6,330 mAh compared with 5,000 mAh. A bigger battery usually means longer days between charges, although chip efficiency and screen size also shape real endurance.
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The Galaxy S26 Ultra has a higher-resolution 200 MP main camera
The Galaxy S26 Ultra’s 200 MP leaves the Xiaomi 17’s 50 MP well behind, so if this spec matters to you, the choice is easy. More megapixels on the main camera allow bigger crops and more detail in good light, but sensor size and processing matter just as much.
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The Xiaomi 17 has faster 100 W wired charging
Not a close call. The Xiaomi 17 lists 100 W and the Galaxy S26 Ultra lists 60 W. That’s a substantial gap. Peak charging speeds depend on a compatible charger, which may not come in the box.
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The Galaxy S26 Ultra has an extra rear camera
Among all the differences on this page, 4 against 3 is one of the most meaningful, and it favors the Galaxy S26 Ultra. An extra rear camera usually means another focal length (ultra-wide, telephoto or macro) and more freedom in framing.
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The Galaxy S26 Ultra has a 0.6-inch larger screen
The Galaxy S26 Ultra has the larger figure, 6.9 in to 6.3 in. Whether that helps depends entirely on you. Screen size is personal. If you watch a lot on your phone, the extra area pays off; if you text one-handed on the go, compact is kinder.
Design & Size
In overall size, the Galaxy S26 Ultra is ahead, which is good news only if a bigger phone is what you want.
Design & Build
| Spec | Galaxy S26 Ultra | Xiaomi 17 |
|---|---|---|
| Height | N/A (not specified) | 5.95 in |
| Width | N/A (not specified) | 2.83 in |
| Thickness | N/A (not specified) | 0.32 in |
| Weight | N/A (not specified) | 6.74 oz |
| Water & dust rating | IP68 | IP68 |
| Frame | N/A (not specified) | Aluminum |
Display
The display comparison is about what’s inside rather than how much. See the table for the Galaxy S26 Ultra’s and the Xiaomi 17’s entries.
Screen size
Galaxy S26 Ultra: 6.9 in Xiaomi 17: 6.3 in A larger display also means a larger phone overall, so this is as much about your hands and pockets as it is about the picture.
Performance
Too close to call
There’s little to choose between them when it comes to performance. On performance alone, you can’t go far wrong with either.
Memory & Storage
Galaxy S26 Ultra leads
This area is close, with the Galaxy S26 Ultra just ahead of the Xiaomi 17. The Galaxy S26 Ultra brings a bigger top storage option. Most buyers are fine with a base or middle tier, so this is a niche advantage, but a real one if you need it. In short, the Galaxy S26 Ultra is the better-equipped phone for memory & storage.
Max storage
Galaxy S26 Ultra: 1 TB Xiaomi 17: 512 GB The top storage option only matters if you plan to buy a high-capacity version, but it caps how much you can ever keep on the phone.
Camera
Galaxy S26 Ultra leads
No contest in camera: the Galaxy S26 Ultra is the stronger of the two. The Galaxy S26 Ultra has the edge with a higher-resolution 200 MP main camera. Megapixels are only one part of image quality, so treat this as a sign of detail potential, not a verdict on photos. Prioritize camera, and the Galaxy S26 Ultra is where you should land.
Main camera
Galaxy S26 Ultra: 200 MP Xiaomi 17: 50 MP The Galaxy S26 Ultra’s higher-resolution main sensor gives you more room to crop, which helps when you can’t get closer.
Rear cameras
Galaxy S26 Ultra: 4 Xiaomi 17: 3 More cameras help most when each covers a different view, so check the table to see what the Galaxy S26 Ultra’s extra lens adds.
Battery & Charging
Xiaomi 17 leads
This section belongs to the Xiaomi 17. In battery & charging, it leads the Galaxy S26 Ultra by a margin that’s hard to ignore. The Xiaomi 17 delivers 27% more battery capacity. Extra capacity also ages better: after a few years of charge cycles, the Xiaomi 17 has more headroom left. The battery & charging verdict goes to the Xiaomi 17.
Battery capacity
Galaxy S26 Ultra: 5,000 mAh Xiaomi 17: 6,330 mAh Capacity isn’t everything, but when two phones are otherwise close, more milliamp-hours is the simplest endurance advantage there is.
Wired charging
Galaxy S26 Ultra: 60 W Xiaomi 17: 100 W Faster wired charging means a short top-up before you head out goes further.
Software & Updates
For software & updates, the spec sheet lists components and formats rather than figures we can rank. The table shows what the Galaxy S26 Ultra and the Xiaomi 17 each bring.
Full Specifications
Display
| Spec | Galaxy S26 Ultra | Xiaomi 17 |
|---|---|---|
| Screen size | 6.9 in | 6.3 in |
| Panel type | Dynamic AMOLED 2X | LTPO AMOLED |
| Resolution | 3120 x 1440 | 2656 x 1220 |
| Refresh rate | N/A (not specified) | 120 Hz |
| Peak brightness | N/A (not specified) | 3,500 nits |
| Always-on display | Yes | N/A (not specified) |
Performance
| Spec | Galaxy S26 Ultra | Xiaomi 17 |
|---|---|---|
| Chipset | Snapdragon 8 Elite Gen 5 for Galaxy | Snapdragon 8 Elite Gen 5 |
| CPU cores | N/A (not specified) | 8 |
| Process node | N/A (not specified) | 3 nm |
| RAM | 12 GB | 12 GB |
Memory & Storage
| Spec | Galaxy S26 Ultra | Xiaomi 17 |
|---|---|---|
| Base storage | 256 GB | 256 GB |
| Max storage | 1 TB (winner) | 512 GB |
| microSD slot | No | No |
Camera
| Spec | Galaxy S26 Ultra | Xiaomi 17 |
|---|---|---|
| Main camera | 200 MP (winner) | 50 MP |
| Ultra-wide camera | N/A (not specified) | 50 MP |
| Telephoto camera | N/A (not specified) | 50 MP |
| Optical zoom | N/A (not specified) | 2.6× Shortest optical zoom |
| Rear cameras | 4 (winner) | 3 |
| Front camera | N/A (not specified) | 50 MP |
| Max video | N/A (not specified) | 8K30 |
Battery & Charging
| Spec | Galaxy S26 Ultra | Xiaomi 17 |
|---|---|---|
| Battery capacity | 5,000 mAh | 6,330 mAh (winner) |
| Wired charging | 60 W | 100 W (winner) |
| Wireless charging | N/A (not specified) | 50 W |
| Port | USB-C | USB-C (USB 3.2) |
Software & Updates
| Spec | Galaxy S26 Ultra | Xiaomi 17 |
|---|---|---|
| OS at launch | Android 16 (One UI 8.5) | HyperOS 3 (Android 16) |
| Promised OS updatesManufacturer commitment | 7 years | N/A (not specified) |
Design & Build
| Spec | Galaxy S26 Ultra | Xiaomi 17 |
|---|---|---|
| Height | N/A (not specified) | 5.95 in |
| Width | N/A (not specified) | 2.83 in |
| Thickness | N/A (not specified) | 0.32 in |
| Weight | N/A (not specified) | 6.74 oz |
| Water & dust rating | IP68 | IP68 |
| Frame | N/A (not specified) | Aluminum |
Price
| Spec | Galaxy S26 Ultra | Xiaomi 17 |
|---|---|---|
| Launch price | $1,300 | N/A (not specified) |
“N/A” means the manufacturer does not specify the value or we could not confirm it. Figures marked “manufacturer rating” are the maker’s own claims, not our measurements.
Which One Should You Buy?
Choose the Galaxy S26 Ultra if…
- you want the higher-resolution main camera (200 MP vs 50 MP)
- you want more lenses to choose from (4 vs 3 rear cameras)
- you plan to buy a high-capacity version (1 TB vs 512 GB maximum)
Choose the Xiaomi 17 if…
- you want the bigger battery (6,330 mAh vs 5,000 mAh)
- you want the faster cable charging (100 W vs 60 W)
- you prefer something easier to fit into tight spaces
Also Compared
Frequently Asked Questions
Should I buy the Galaxy S26 Ultra or the Xiaomi 17?
The Galaxy S26 Ultra and the Xiaomi 17 split the comparison (memory & storage for the Galaxy S26 Ultra, battery & charging for the Xiaomi 17), so pick the strength you’ll use.
Does the Galaxy S26 Ultra last longer on a charge than the Xiaomi 17?
Going by the official figures, the Xiaomi 17 leads: 6,330 mAh versus 5,000 mAh for battery capacity. Screen use, settings and efficiency will shape your own results.
Is the Galaxy S26 Ultra bigger than the Xiaomi 17?
The larger model here is the Galaxy S26 Ultra (6.9 in); the Xiaomi 17 is more compact at 5.95 × 2.83 × 0.32 in.
Which has the better camera, the Galaxy S26 Ultra or the Xiaomi 17?
Going by the hardware, the Galaxy S26 Ultra comes out ahead: a higher-resolution 200 MP main camera and an extra rear camera.
Executive Summary
Two companies, two answers to the same question. That’s how I see the Galaxy S26 Ultra from Samsung and the Xiaomi 17 from Xiaomi. I’d put a higher-resolution 200 MP main camera at the top of the list, and it belongs to the Galaxy S26 Ultra. Beyond that, a bigger top storage option gives the Galaxy S26 Ultra another edge. The Xiaomi 17 does have a strong card to play: 27% more battery capacity.
In my head, the Galaxy S26 Ultra is the memory & storage pick and the Xiaomi 17 is the battery & charging pick.
My pick: honestly, it’s a split decision, so let memory & storage versus battery & charging settle it for you.
Personal opinion based on the data above. Your priorities may differ.