Between the Galaxy S26 Ultra and MIX Fold 4, the Galaxy S26 Ultra comes out ahead in main camera and pixel density, while the MIX Fold 4 wins on wireless charging and front camera. Overall, the Galaxy S26 Ultra scores 75.6 and the MIX Fold 4 scores 71.4 on our Mars Score.
Which should you buy?
The Galaxy S26 Ultra edges ahead on the Mars Score (75.6 vs 71.4), but the 4.2-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the Galaxy S26 Ultra if you photograph or shoot video regularly and want the better imaging pipeline of the two. The biggest gaps in its favor are main camera, pixel density, antutu, among others.
Pick the MIX Fold 4 if you photograph or shoot video regularly and want the better imaging pipeline of the two. Its strongest claims are wireless charging, front camera, screen size, among others.
Both ship with comparable ram, refresh rate, 5g support, so those specs don't separate the two — focus on the differences below.
Bottom line: there is no wrong answer here — match the spec advantages to how you actually use the product. The Mars Score parity tells you both are well-rounded; the differences are about trade-offs, not quality.
Why Samsung - Galaxy S26 Ultra wins
- ▲Main camera — 300.00% more. 200 MP vs 50 MP.
- ▲Pixel density — 24.63% more. 501 ppi vs 402 ppi.
- ▲AnTuTu — 13.24% more. 2310000 vs 2040000.
- ▲Promised OS updates: 7 (vs 4).
Why Xiaomi - MIX Fold 4 wins
- ▲Wireless charging — 233.33% more. 50 W vs 15 W.
- ▲Front camera — 66.67% more. 20 MP vs 12 MP.
- ▲Screen size — 15.65% more. 7.98 " vs 6.9 ".
- ▲Weight — 6.00 g less. 226 vs 232.
- ▲Wired charging — 3.08% more. 67 W vs 65 W.
- ▲Battery capacity — 2.00% more. 5100 mAh vs 5000 mAh.
- ▲Water resistance: IPX8 (vs IP68).
Spec comparison
Design
| Spec | Samsung - Galaxy S26 Ultra | Xiaomi - MIX Fold 4 |
|---|---|---|
| Weight | 232 g | 226 glead |
| Thickness | 8.6 mmlead | 9.47 mm |
| Water resistanceⓘ | IP68 | IPX8lead |
| Form factor | bar | foldable_booklead |
Display
| Spec | Samsung - Galaxy S26 Ultra | Xiaomi - MIX Fold 4 |
|---|---|---|
| Screen sizeⓘ | 6.9 " | 7.98 "lead |
| Pixel densityⓘ | 501 ppilead | 402 ppi |
| Refresh rateⓘ | 120 Hz | 120 Hz |
| Peak brightnessⓘ | 2600 nits | 3000 nitslead |
Performance
Cameras
| Spec | Samsung - Galaxy S26 Ultra | Xiaomi - MIX Fold 4 |
|---|---|---|
| Main cameraⓘ | 200 MPlead | 50 MP |
| Front camera | 12 MP | 20 MPlead |
| Optical image stabilizationⓘ | true | true |
Battery
| Spec | Samsung - Galaxy S26 Ultra | Xiaomi - MIX Fold 4 |
|---|---|---|
| Battery capacity | 5000 mAh | 5100 mAhlead |
| Wired chargingⓘ | 65 W | 67 Wlead |
| Wireless chargingⓘ | 15 W | 50 Wlead |
Connectivity
| Spec | Samsung - Galaxy S26 Ultra | Xiaomi - MIX Fold 4 |
|---|---|---|
| 5G supportⓘ | true | true |
| Headphone jack | false | false |
| microSD slot | false | false |
Operating System
| Spec | Samsung - Galaxy S26 Ultra | Xiaomi - MIX Fold 4 |
|---|---|---|
| OS | Android | Android |
| Promised OS updates | 7 yearslead | 4 years |
Frequently asked
Which has better battery, Galaxy S26 Ultra or MIX Fold 4?+
MIX Fold 4 has 2.0% more battery — 5000 mAh vs 5100 mAh.
Which is lighter, Galaxy S26 Ultra or MIX Fold 4?+
MIX Fold 4 is 6g lighter — 232g vs 226g.
Is Galaxy S26 Ultra waterproof?+
Galaxy S26 Ultra has an IP68 rating.
Does MIX Fold 4 support 5G?+
Yes, MIX Fold 4 supports 5G.
Which has a better camera, Galaxy S26 Ultra or MIX Fold 4?+
Galaxy S26 Ultra has a 200 MP main camera vs 50 MP.
Spec-level deep dives
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