Between the Pixel 9 and MIX Fold 4, the Pixel 9 comes out ahead in weight and pixel density, while the MIX Fold 4 wins on wireless charging and wired charging. Overall, the Pixel 9 scores 63.5 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 (63.5 vs 71.4), but the 7.9-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the Pixel 9 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, pixel density, promised os updates.
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 main camera, refresh rate, 5g support, so those specs don't separate the two — focus on the differences below.
Bottom line: the MIX Fold 4 is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Google - Pixel 9 wins
- ▲Weight — 28.00 g less. 198 vs 226.
- ▲Pixel density — 4.98% more. 422 ppi vs 402 ppi.
- ▲Promised OS updates: 7 (vs 4).
Why Xiaomi - MIX Fold 4 wins
- ▲Wireless charging — 233.33% more. 50 W vs 15 W.
- ▲Wired charging — 148.15% more. 67 W vs 27 W.
- ▲Front camera — 90.48% more. 20 MP vs 10.5 MP.
- ▲AnTuTu — 64.52% more. 2040000 vs 1240000.
- ▲RAM — 33.33% more. 16 GB vs 12 GB.
- ▲Screen size — 26.67% more. 7.98 " vs 6.3 ".
- ▲Battery capacity — 8.51% more. 5100 mAh vs 4700 mAh.
- ▲Water resistance: IPX8 (vs IP68).
Spec comparison
Design
| Spec | Google - Pixel 9 | Xiaomi - MIX Fold 4 |
|---|---|---|
| Weight | 198 glead | 226 g |
| Thickness | 8.5 mmlead | 9.47 mm |
| Water resistanceⓘ | IP68 | IPX8lead |
| Form factor | bar | foldable_booklead |
Display
| Spec | Google - Pixel 9 | Xiaomi - MIX Fold 4 |
|---|---|---|
| Screen sizeⓘ | 6.3 " | 7.98 "lead |
| Pixel densityⓘ | 422 ppilead | 402 ppi |
| Refresh rateⓘ | 120 Hz | 120 Hz |
| Peak brightnessⓘ | 2700 nits | 3000 nitslead |
Performance
Cameras
| Spec | Google - Pixel 9 | Xiaomi - MIX Fold 4 |
|---|---|---|
| Main cameraⓘ | 50 MP | 50 MP |
| Front camera | 10.5 MP | 20 MPlead |
| Optical image stabilizationⓘ | true | true |
Battery
| Spec | Google - Pixel 9 | Xiaomi - MIX Fold 4 |
|---|---|---|
| Battery capacity | 4700 mAh | 5100 mAhlead |
| Wired chargingⓘ | 27 W | 67 Wlead |
| Wireless chargingⓘ | 15 W | 50 Wlead |
Connectivity
| Spec | Google - Pixel 9 | Xiaomi - MIX Fold 4 |
|---|---|---|
| 5G supportⓘ | true | true |
| Headphone jack | false | false |
| microSD slot | false | false |
Operating System
| Spec | Google - Pixel 9 | Xiaomi - MIX Fold 4 |
|---|---|---|
| OS | Android | Android |
| Promised OS updates | 7 yearslead | 4 years |
Frequently asked
Which has better battery, Pixel 9 or MIX Fold 4?+
MIX Fold 4 has 8.5% more battery — 4700 mAh vs 5100 mAh.
Which is lighter, Pixel 9 or MIX Fold 4?+
Pixel 9 is 28g lighter — 198g vs 226g.
Is Pixel 9 waterproof?+
Pixel 9 has an IP68 rating.
Does MIX Fold 4 support 5G?+
Yes, MIX Fold 4 supports 5G.
Which has more RAM, Pixel 9 or MIX Fold 4?+
MIX Fold 4 offers 16GB of RAM.
Which has a better camera, Pixel 9 or MIX Fold 4?+
MIX Fold 4 has a 50 MP main camera vs 50 MP.
Spec-level deep dives
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