Between the Galaxy Z Fold 7 and Xiaomi 15 Ultra, the Galaxy Z Fold 7 comes out ahead in weight and screen size, while the Xiaomi 15 Ultra wins on wireless charging and wired charging. Overall, the Galaxy Z Fold 7 scores 69.5 and the Xiaomi 15 Ultra scores 73.8 on our Mars Score.
Which should you buy?
The Xiaomi 15 Ultra edges ahead on the Mars Score (69.5 vs 73.8), but the 4.3-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the Galaxy Z Fold 7 if the display is what you stare at all day — refresh rate, brightness, or sharpness is where the difference will be most visible. The biggest gaps in its favor are weight, screen size, promised os updates.
Pick the Xiaomi 15 Ultra if you photograph or shoot video regularly and want the better imaging pipeline of the two. Its strongest claims are wireless charging, wired charging, front camera, among others.
Both ship with comparable ram, main camera, refresh rate, 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 Z Fold 7 wins
- ▲Weight — 14.00 g less. 215 vs 229.
- ▲Screen size — 12.93% more. 7.6 " vs 6.73 ".
- ▲Promised OS updates: 7 (vs 4).
Why Xiaomi 15 Ultra wins
- ▲Wireless charging — 433.33% more. 80 W vs 15 W.
- ▲Wired charging — 260.00% more. 90 W vs 25 W.
- ▲Front camera — 220.00% more. 32 MP vs 10 MP.
- ▲Pixel density — 39.57% more. 522 ppi vs 374 ppi.
- ▲Battery capacity — 36.36% more. 6000 mAh vs 4400 mAh.
- ▲AnTuTu — 32.68% more. 2720000 vs 2050000.
Spec comparison
Design
| Spec | Samsung - Galaxy Z Fold 7 | Xiaomi 15 Ultra |
|---|---|---|
| Weight | 215 glead | 229 g |
| Thickness | 10.6 mm | 9.4 mmlead |
| Water resistanceⓘ | IP68 | IP68 |
| Form factor | foldable_booklead | bar |
Display
| Spec | Samsung - Galaxy Z Fold 7 | Xiaomi 15 Ultra |
|---|---|---|
| Screen sizeⓘ | 7.6 "lead | 6.73 " |
| Pixel densityⓘ | 374 ppi | 522 ppilead |
| Refresh rateⓘ | 120 Hz | 120 Hz |
| Peak brightnessⓘ | 2600 nits | 3200 nitslead |
Performance
Cameras
| Spec | Samsung - Galaxy Z Fold 7 | Xiaomi 15 Ultra |
|---|---|---|
| Main cameraⓘ | 50 MP | 50 MP |
| Front camera | 10 MP | 32 MPlead |
| Optical image stabilizationⓘ | true | true |
Battery
| Spec | Samsung - Galaxy Z Fold 7 | Xiaomi 15 Ultra |
|---|---|---|
| Battery capacity | 4400 mAh | 6000 mAhlead |
| Wired chargingⓘ | 25 W | 90 Wlead |
| Wireless chargingⓘ | 15 W | 80 Wlead |
Connectivity
| Spec | Samsung - Galaxy Z Fold 7 | Xiaomi 15 Ultra |
|---|---|---|
| 5G supportⓘ | true | true |
| Headphone jack | false | false |
| microSD slot | false | false |
Operating System
| Spec | Samsung - Galaxy Z Fold 7 | Xiaomi 15 Ultra |
|---|---|---|
| OS | Android | Android |
| Promised OS updates | 7 yearslead | 4 years |
Frequently asked
Which has better battery, Galaxy Z Fold 7 or Xiaomi 15 Ultra?+
Xiaomi 15 Ultra has 36.4% more battery — 4400 mAh vs 6000 mAh.
Which is lighter, Galaxy Z Fold 7 or Xiaomi 15 Ultra?+
Galaxy Z Fold 7 is 14g lighter — 215g vs 229g.
Is Galaxy Z Fold 7 waterproof?+
Galaxy Z Fold 7 has an IP68 rating.
Does Xiaomi 15 Ultra support 5G?+
Yes, Xiaomi 15 Ultra supports 5G.
Which has a better camera, Galaxy Z Fold 7 or Xiaomi 15 Ultra?+
Xiaomi 15 Ultra has a 50 MP main camera vs 50 MP.
Spec-level deep dives
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