Between the Pixel 9 Pro Fold and MIX Fold 4, the Pixel 9 Pro Fold comes out ahead in promised os updates and screen size, while the MIX Fold 4 wins on wireless charging and wired charging. Overall, the Pixel 9 Pro Fold scores 67.1 and the MIX Fold 4 scores 71.4 on our Mars Score.
Which should you buy?
The MIX Fold 4 edges ahead on the Mars Score (67.1 vs 71.4), but the 4.3-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the Pixel 9 Pro Fold 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 promised os updates, screen size.
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, wired charging, front camera, 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 Google - Pixel 9 Pro Fold wins
- ▲Promised OS updates: 7 (vs 4).
- ▲Screen size — 0.25% more. 8.0 " vs 7.98 ".
Why Xiaomi - MIX Fold 4 wins
- ▲Wireless charging — 566.67% more. 50 W vs 7.5 W.
- ▲Wired charging — 219.05% more. 67 W vs 21 W.
- ▲Front camera — 100.00% more. 20 MP vs 10 MP.
- ▲AnTuTu — 64.52% more. 2040000 vs 1240000.
- ▲Weight — 31.00 g less. 226 vs 257.
- ▲Battery capacity — 9.68% more. 5100 mAh vs 4650 mAh.
- ▲Pixel density — 7.77% more. 402 ppi vs 373 ppi.
- ▲Main camera — 4.17% more. 50 MP vs 48 MP.
Spec comparison
Design
| Spec | Google - Pixel 9 Pro Fold | Xiaomi - MIX Fold 4 |
|---|---|---|
| Weight | 257 g | 226 glead |
| Thickness | 10.5 mm | 9.47 mmlead |
| Water resistanceⓘ | IPX8 | IPX8 |
| Form factor | foldable_book | foldable_book |
Display
| Spec | Google - Pixel 9 Pro Fold | Xiaomi - MIX Fold 4 |
|---|---|---|
| Screen sizeⓘ | 8.0 "lead | 7.98 " |
| Pixel densityⓘ | 373 ppi | 402 ppilead |
| Refresh rateⓘ | 120 Hz | 120 Hz |
| Peak brightnessⓘ | 2700 nits | 3000 nitslead |
Performance
Cameras
| Spec | Google - Pixel 9 Pro Fold | Xiaomi - MIX Fold 4 |
|---|---|---|
| Main cameraⓘ | 48 MP | 50 MPlead |
| Front camera | 10 MP | 20 MPlead |
| Optical image stabilizationⓘ | true | true |
Battery
| Spec | Google - Pixel 9 Pro Fold | Xiaomi - MIX Fold 4 |
|---|---|---|
| Battery capacity | 4650 mAh | 5100 mAhlead |
| Wired chargingⓘ | 21 W | 67 Wlead |
| Wireless chargingⓘ | 7.5 W | 50 Wlead |
Connectivity
| Spec | Google - Pixel 9 Pro Fold | Xiaomi - MIX Fold 4 |
|---|---|---|
| 5G supportⓘ | true | true |
| Headphone jack | false | false |
| microSD slot | false | false |
Operating System
| Spec | Google - Pixel 9 Pro Fold | Xiaomi - MIX Fold 4 |
|---|---|---|
| OS | Android | Android |
| Promised OS updates | 7 yearslead | 4 years |
Frequently asked
Which has better battery, Pixel 9 Pro Fold or MIX Fold 4?+
MIX Fold 4 has 9.7% more battery — 4650 mAh vs 5100 mAh.
Which is lighter, Pixel 9 Pro Fold or MIX Fold 4?+
MIX Fold 4 is 31g lighter — 257g vs 226g.
Is Pixel 9 Pro Fold waterproof?+
Pixel 9 Pro Fold has an IPX8 rating.
Does MIX Fold 4 support 5G?+
Yes, MIX Fold 4 supports 5G.
Which has a better camera, Pixel 9 Pro Fold or MIX Fold 4?+
MIX Fold 4 has a 50 MP main camera vs 48 MP.
Spec-level deep dives
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