Between the X Fold 3 Pro and Xiaomi 15 Ultra, the X Fold 3 Pro comes out ahead in screen size and wired charging, while the Xiaomi 15 Ultra wins on wireless charging and antutu. Overall, the X Fold 3 Pro scores 73.1 and the Xiaomi 15 Ultra scores 73.8 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (73.1 vs 73.8). The decision isn't about overall quality — both clear the bar — it's about which specific trade-offs fit your use.
Pick the X Fold 3 Pro 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 screen size, wired charging, water resistance.
Pick the Xiaomi 15 Ultra if the display is what you stare at all day — refresh rate, brightness, or sharpness is where the difference will be most visible. Its strongest claims are wireless charging, antutu, pixel density, 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 Vivo - X Fold 3 Pro wins
- ▲Screen size — 19.32% more. 8.03 " vs 6.73 ".
- ▲Wired charging — 11.11% more. 100 W vs 90 W.
- ▲Water resistance: IPX8 (vs IP68).
Why Xiaomi 15 Ultra wins
- ▲Wireless charging — 60.00% more. 80 W vs 50 W.
- ▲AnTuTu — 31.40% more. 2720000 vs 2070000.
- ▲Pixel density — 29.85% more. 522 ppi vs 402 ppi.
- ▲Weight — 7.00 g less. 229 vs 236.
- ▲Battery capacity — 5.26% more. 6000 mAh vs 5700 mAh.
Spec comparison
Design
| Spec | Vivo - X Fold 3 Pro | Xiaomi 15 Ultra |
|---|---|---|
| Weight | 236 g | 229 glead |
| Thickness | 11.2 mm | 9.4 mmlead |
| Water resistanceⓘ | IPX8lead | IP68 |
| Form factor | foldable_booklead | bar |
Display
| Spec | Vivo - X Fold 3 Pro | Xiaomi 15 Ultra |
|---|---|---|
| Screen sizeⓘ | 8.03 "lead | 6.73 " |
| Pixel densityⓘ | 402 ppi | 522 ppilead |
| Refresh rateⓘ | 120 Hz | 120 Hz |
| Peak brightnessⓘ | 4500 nitslead | 3200 nits |
Performance
Cameras
| Spec | Vivo - X Fold 3 Pro | Xiaomi 15 Ultra |
|---|---|---|
| Main cameraⓘ | 50 MP | 50 MP |
| Front camera | 32 MP | 32 MP |
| Optical image stabilizationⓘ | true | true |
Battery
| Spec | Vivo - X Fold 3 Pro | Xiaomi 15 Ultra |
|---|---|---|
| Battery capacity | 5700 mAh | 6000 mAhlead |
| Wired chargingⓘ | 100 Wlead | 90 W |
| Wireless chargingⓘ | 50 W | 80 Wlead |
Connectivity
| Spec | Vivo - X Fold 3 Pro | Xiaomi 15 Ultra |
|---|---|---|
| 5G supportⓘ | true | true |
| Headphone jack | false | false |
| microSD slot | false | false |
Operating System
| Spec | Vivo - X Fold 3 Pro | Xiaomi 15 Ultra |
|---|---|---|
| OS | Android | Android |
| Promised OS updates | 4 years | 4 years |
Frequently asked
Which has better battery, X Fold 3 Pro or Xiaomi 15 Ultra?+
Xiaomi 15 Ultra has 5.3% more battery — 5700 mAh vs 6000 mAh.
Which is lighter, X Fold 3 Pro or Xiaomi 15 Ultra?+
Xiaomi 15 Ultra is 7g lighter — 236g vs 229g.
Is X Fold 3 Pro waterproof?+
X Fold 3 Pro has an IPX8 rating.
Does Xiaomi 15 Ultra support 5G?+
Yes, Xiaomi 15 Ultra supports 5G.
Which has a better camera, X Fold 3 Pro or Xiaomi 15 Ultra?+
Xiaomi 15 Ultra has a 50 MP main camera vs 50 MP.
Spec-level deep dives
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