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 - MIX Fold 4 |
|---|---|---|
| Front camera | 32 MP | 20 MP |
| Wired charging | 100 W | 67 W |
| Battery capacity | 5700 mAh | 5100 mAh |
| Weight | 236 g | 226 g |
| AnTuTu | 2070000 | 2040000 |
| Screen size | 8.03 " | 7.98 " |
Between the X Fold 3 Pro and MIX Fold 4, the X Fold 3 Pro comes out ahead in front camera / wired charging, while the MIX Fold 4 wins on weight. Overall, the X Fold 3 Pro scores 70.7 and the MIX Fold 4 scores 69.5 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (70.7 vs 69.5). 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 your top frustration with your current device is running out of charge before the day ends — endurance is the lead spec here. The biggest gaps in its favor are front camera, wired charging, battery capacity, among others. The single most decisive one: Front camera — 60.00% more. 32 MP vs 20 MP.
Pick the MIX Fold 4 if you carry the device everywhere and weight or thickness has been the deciding factor before. Its strongest claims are weight. The single most decisive one: Weight — 10.00 g less. 226 vs 236.
Both ship with comparable ram, main camera, refresh rate, 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 - MIX Fold 4?
Vivo - X Fold 3 Pro leads the current Mars Score by 1.2 points.The more useful decision is the trade-off behind that result: compare screen size, 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 front cam mp, wired charging w, battery capacity mah.
Choose Xiaomi - MIX Fold 4 if…
Xiaomi - MIX Fold 4 has the measurable edge on weight g.
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
- ▲Front camera — 60.00% more. 32 MP vs 20 MP.
- ▲Wired charging — 49.25% more. 100 W vs 67 W.
- ▲Battery capacity — 11.76% more. 5700 mAh vs 5100 mAh.
- ▲AnTuTu — 1.47% more. 2070000 vs 2040000.
- ▲Screen size — 0.63% more. 8.03 " vs 7.98 ".
Why Xiaomi - MIX Fold 4 wins
- ▲Weight — 10.00 g less. 226 vs 236.
Spec comparison
Design
| Spec | Vivo - X Fold 3 Pro | Xiaomi - MIX Fold 4 |
|---|---|---|
| Weight | 236 g | 226 glead |
| Thickness | 11.2 mm | 9.47 mmlead |
| Water resistanceⓘ | IPX8 | IPX8 |
| Form factor | foldable_book | foldable_book |
Display
| Spec | Vivo - X Fold 3 Pro | Xiaomi - MIX Fold 4 |
|---|---|---|
| Screen size | 8.03 "lead | 7.98 " |
| Pixel densityⓘ | 402 ppi | 402 ppi |
| Refresh rateⓘ | 120 Hz | 120 Hz |
| Peak brightnessⓘ | 4500 nitslead | 3000 nits |
Performance
| Spec | Vivo - X Fold 3 Pro | Xiaomi - MIX Fold 4 |
|---|---|---|
| RAMⓘ | 16 GB | 16 GB |
| Storageⓘ | 512 GB | 512 GB |
| AnTuTuⓘ | 2070000lead | 2040000 |
| CPU total clockⓘ | 21.4 GHzlead | 21.0 GHz |
Cameras
| Spec | Vivo - X Fold 3 Pro | Xiaomi - MIX Fold 4 |
|---|---|---|
| Main cameraⓘ | 50 MP | 50 MP |
| Front camera | 32 MPlead | 20 MP |
| Optical image stabilizationⓘ | true | true |
Battery
| Spec | Vivo - X Fold 3 Pro | Xiaomi - MIX Fold 4 |
|---|---|---|
| Battery capacityⓘ | 5700 mAhlead | 5100 mAh |
| Wired chargingⓘ | 100 Wlead | 67 W |
| Wireless chargingⓘ | 50 W | 50 W |
Connectivity
| Spec | Vivo - X Fold 3 Pro | Xiaomi - MIX Fold 4 |
|---|---|---|
| 5G supportⓘ | true | true |
| Headphone jack | false | false |
| microSD slot | false | false |
Operating System
| Spec | Vivo - X Fold 3 Pro | Xiaomi - MIX Fold 4 |
|---|---|---|
| OS | Android | Android |
| Promised OS updates | 4 years | 4 years |
Frequently asked
Which has better battery, X Fold 3 Pro or MIX Fold 4?+
X Fold 3 Pro has 11.8% more battery — 5700 mAh vs 5100 mAh.
Which is lighter, X Fold 3 Pro or MIX Fold 4?+
MIX Fold 4 is 10g lighter — 236g vs 226g.
Is X Fold 3 Pro waterproof?+
X Fold 3 Pro has an IPX8 rating.
Does MIX Fold 4 support 5G?+
Yes, MIX Fold 4 supports 5G.
Which has a better camera, X Fold 3 Pro or MIX Fold 4?+
MIX Fold 4 has a 50 MP main camera vs 50 MP.