Between the iPhone 15 Pro Max and MIX Fold 4, the iPhone 15 Pro Max comes out ahead in pixel density and weight, while the MIX Fold 4 wins on wireless charging and wired charging. Overall, the iPhone 15 Pro Max scores 63.2 and the MIX Fold 4 scores 71.4 on our Mars Score.
Which should you buy?
The MIX Fold 4 is the clear pick on raw spec strength, leading by 8.2 points on the Mars Score. The margin is wide enough that the underdog only makes sense if its individual strengths line up with what you specifically need.
Pick the iPhone 15 Pro Max 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 pixel density, weight, promised os updates.
Pick the MIX Fold 4 if you push the hardware — gaming, on-device AI, heavy multitasking — and the extra compute headroom is worth the trade-offs. Its strongest claims are wireless charging, wired charging, ram, among others.
Both ship with comparable refresh rate, 5g support, optical image stabilization, 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 Apple - iPhone 15 Pro Max wins
- ▲Pixel density — 14.43% more. 460 ppi vs 402 ppi.
- ▲Weight — 5.00 g less. 221 vs 226.
- ▲Promised OS updates: 5 (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.
- ▲RAM — 100.00% more. 16 GB vs 8 GB.
- ▲Front camera — 66.67% more. 20 MP vs 12 MP.
- ▲AnTuTu — 33.33% more. 2040000 vs 1530000.
- ▲Screen size — 19.10% more. 7.98 " vs 6.7 ".
- ▲Battery capacity — 15.33% more. 5100 mAh vs 4422 mAh.
- ▲Main camera — 4.17% more. 50 MP vs 48 MP.
Spec comparison
Design
| Spec | Apple - iPhone 15 Pro Max | Xiaomi - MIX Fold 4 |
|---|---|---|
| Weight | 221 glead | 226 g |
| Thickness | 8.25 mmlead | 9.47 mm |
| Water resistanceⓘ | IP68 | IPX8lead |
| Form factor | bar | foldable_booklead |
Display
| Spec | Apple - iPhone 15 Pro Max | Xiaomi - MIX Fold 4 |
|---|---|---|
| Screen sizeⓘ | 6.7 " | 7.98 "lead |
| Pixel densityⓘ | 460 ppilead | 402 ppi |
| Refresh rateⓘ | 120 Hz | 120 Hz |
| Peak brightnessⓘ | 2000 nits | 3000 nitslead |
Performance
Cameras
| Spec | Apple - iPhone 15 Pro Max | Xiaomi - MIX Fold 4 |
|---|---|---|
| Main cameraⓘ | 48 MP | 50 MPlead |
| Front camera | 12 MP | 20 MPlead |
| Optical image stabilizationⓘ | true | true |
Battery
| Spec | Apple - iPhone 15 Pro Max | Xiaomi - MIX Fold 4 |
|---|---|---|
| Battery capacity | 4422 mAh | 5100 mAhlead |
| Wired chargingⓘ | 27 W | 67 Wlead |
| Wireless chargingⓘ | 15 W | 50 Wlead |
Connectivity
| Spec | Apple - iPhone 15 Pro Max | Xiaomi - MIX Fold 4 |
|---|---|---|
| 5G supportⓘ | true | true |
| Headphone jack | false | false |
| microSD slot | false | false |
Operating System
| Spec | Apple - iPhone 15 Pro Max | Xiaomi - MIX Fold 4 |
|---|---|---|
| OS | iOSlead | Android |
| Promised OS updates | 5 yearslead | 4 years |
Frequently asked
Which has better battery, iPhone 15 Pro Max or MIX Fold 4?+
MIX Fold 4 has 15.3% more battery — 4422 mAh vs 5100 mAh.
Which is lighter, iPhone 15 Pro Max or MIX Fold 4?+
iPhone 15 Pro Max is 5g lighter — 221g vs 226g.
Is iPhone 15 Pro Max waterproof?+
iPhone 15 Pro Max has an IP68 rating.
Does MIX Fold 4 support 5G?+
Yes, MIX Fold 4 supports 5G.
Which has more RAM, iPhone 15 Pro Max or MIX Fold 4?+
MIX Fold 4 offers 16GB of RAM.
Which has a better camera, iPhone 15 Pro Max or MIX Fold 4?+
MIX Fold 4 has a 50 MP main camera vs 48 MP.
Spec-level deep dives
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