Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Vivo - X Fold 3 Pro | Xiaomi 15 |
|---|---|---|
| Weight | 236 g | 192 g |
| RAM | 16 GB | 12 GB |
| AnTuTu | 2070000 | 2680000 |
| Screen size | 8.03 " | 6.36 " |
| Pixel density | 402 ppi | 460 ppi |
| Wired charging | 100 W | 90 W |
Between the X Fold 3 Pro and Xiaomi 15, the X Fold 3 Pro comes out ahead in ram / screen size, while the Xiaomi 15 wins on weight / antutu. Overall, the X Fold 3 Pro scores 70.7 and the Xiaomi 15 scores 69.8 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (70.7 vs 69.8). The decision is not about overall quality — both clear the bar — it is 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 ram, screen size, wired charging, among others. The single most decisive one: RAM — 33.33% more. 16 GB vs 12 GB.
Pick the Xiaomi 15 if you care most about weight / antutu. Its strongest claims are weight, antutu, pixel density. The single most decisive one: Weight — 44.00 g less. 192 vs 236.
Both ship with comparable main camera, refresh rate, 5g support, so those specs do not 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 says both are well-rounded; the differences are about trade-offs, not quality.
Which should you buy: Vivo - X Fold 3 Pro or Xiaomi 15?
Vivo - X Fold 3 Pro leads the current Mars Score by 0.9 points.The more useful decision is the trade-off behind that result: compare screen size, ram, pixel density, battery capacity against the way you will actually use the product.
Choose Vivo - X Fold 3 Pro if…
Vivo - X Fold 3 Pro has the measurable edge on ram gb, screen size in, wired charging w.
Choose Xiaomi 15 if…
Xiaomi 15 has the measurable edge on weight g, antutu score, pixel density ppi.
This is a structured comparison of the published catalog values. It is not a claim of identical real-world performance across every workload; use the linked spec drill-downs and methodology page to inspect the inputs.
Why Vivo - X Fold 3 Pro wins
- ▲RAM — 33.33% more. 16 GB vs 12 GB.
- ▲Screen size — 26.26% more. 8.03 " vs 6.36 ".
- ▲Wired charging — 11.11% more. 100 W vs 90 W.
- ▲Battery capacity — 5.56% more. 5700 mAh vs 5400 mAh.
- ▲Water resistance: IPX8 (vs IP68).
Why Xiaomi 15 wins
- ▲Weight — 44.00 g less. 192 vs 236.
- ▲AnTuTu — 29.47% more. 2680000 vs 2070000.
- ▲Pixel density — 14.43% more. 460 ppi vs 402 ppi.
Spec comparison
Design
| Spec | Vivo - X Fold 3 Pro | Xiaomi 15 |
|---|---|---|
| Weight | 236 g | 192 glead |
| Thickness | 11.2 mm | 8.1 mmlead |
| Water resistanceⓘ | IPX8lead | IP68 |
| Form factor | foldable_booklead | bar |
Display
| Spec | Vivo - X Fold 3 Pro | Xiaomi 15 |
|---|---|---|
| Screen size | 8.03 "lead | 6.36 " |
| Pixel densityⓘ | 402 ppi | 460 ppilead |
| Refresh rateⓘ | 120 Hz | 120 Hz |
| Peak brightnessⓘ | 4500 nitslead | 3200 nits |
Performance
| Spec | Vivo - X Fold 3 Pro | Xiaomi 15 |
|---|---|---|
| RAMⓘ | 16 GBlead | 12 GB |
| Storageⓘ | 512 GBlead | 256 GB |
| AnTuTuⓘ | 2070000 | 2680000lead |
| CPU total clockⓘ | 21.4 GHz | 22.8 GHzlead |
Cameras
| Spec | Vivo - X Fold 3 Pro | Xiaomi 15 |
|---|---|---|
| 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 |
|---|---|---|
| Battery capacityⓘ | 5700 mAhlead | 5400 mAh |
| Wired chargingⓘ | 100 Wlead | 90 W |
| Wireless chargingⓘ | 50 W | 50 W |
Connectivity
| Spec | Vivo - X Fold 3 Pro | Xiaomi 15 |
|---|---|---|
| 5G supportⓘ | true | true |
| Headphone jack | false | false |
| microSD slot | false | false |
Operating System
| Spec | Vivo - X Fold 3 Pro | Xiaomi 15 |
|---|---|---|
| OS | Android | Android |
| Promised OS updates | 4 years | 4 years |
Frequently asked
Which has better battery, X Fold 3 Pro or Xiaomi 15?+
X Fold 3 Pro has 5.6% more battery — 5700 mAh vs 5400 mAh.
Which is lighter, X Fold 3 Pro or Xiaomi 15?+
Xiaomi 15 is 44g lighter — 236g vs 192g.
Is X Fold 3 Pro waterproof?+
X Fold 3 Pro has an IPX8 rating.
Does Xiaomi 15 support 5G?+
Yes, Xiaomi 15 supports 5G.
Which has more RAM, X Fold 3 Pro or Xiaomi 15?+
X Fold 3 Pro offers 16GB of RAM.
Which has a better camera, X Fold 3 Pro or Xiaomi 15?+
Xiaomi 15 has a 50 MP main camera vs 50 MP.