Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Apple - iPhone 18 Pro Max | Xiaomi - MIX Fold 4 |
|---|---|---|
| Wireless charging | 25 W | 50 W |
| AnTuTu | 3550000 | 2040000 |
| RAM | 12 GB | 16 GB |
| Weight | 249 g | 226 g |
| Screen size | 6.9 " | 7.98 " |
| Pixel density | 460 ppi | 402 ppi |
Between the iPhone 18 Pro Max and MIX Fold 4, the iPhone 18 Pro Max comes out ahead in antutu / pixel density, while the MIX Fold 4 wins on wireless charging / ram. Overall, the iPhone 18 Pro Max scores 69.9 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 (69.9 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 iPhone 18 Pro Max 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 antutu, pixel density, battery capacity, among others. The single most decisive one: AnTuTu — 74.02% more. 3550000 vs 2040000.
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, ram, weight, among others. The single most decisive one: Wireless charging — 100.00% more. 50 W vs 25 W.
Both ship with comparable refresh rate, 5g support, optical image stabilization, 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: Apple - iPhone 18 Pro Max or Xiaomi - MIX Fold 4?
Apple - iPhone 18 Pro Max leads the current Mars Score by 0.4 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 Apple - iPhone 18 Pro Max if…
Apple - iPhone 18 Pro Max has the measurable edge on antutu score, pixel density ppi, battery capacity mah.
Choose Xiaomi - MIX Fold 4 if…
Xiaomi - MIX Fold 4 has the measurable edge on wireless charging w, ram gb, 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 Apple - iPhone 18 Pro Max wins
- ▲AnTuTu — 74.02% more. 3550000 vs 2040000.
- ▲Pixel density — 14.43% more. 460 ppi vs 402 ppi.
- ▲Battery capacity — 5.71% more. 5391 mAh vs 5100 mAh.
- ▲Promised OS updates: 6 (vs 4).
Why Xiaomi - MIX Fold 4 wins
- ▲Wireless charging — 100.00% more. 50 W vs 25 W.
- ▲RAM — 33.33% more. 16 GB vs 12 GB.
- ▲Weight — 23.00 g less. 226 vs 249.
- ▲Screen size — 15.65% more. 7.98 " vs 6.9 ".
- ▲Wired charging — 11.67% more. 67 W vs 60 W.
- ▲Front camera — 11.11% more. 20 MP vs 18 MP.
- ▲Main camera — 4.17% more. 50 MP vs 48 MP.
- ▲Water resistance: IPX8 (vs IP68).
Spec comparison
Design
| Spec | Apple - iPhone 18 Pro Max | Xiaomi - MIX Fold 4 |
|---|---|---|
| Weight | 249 g | 226 glead |
| Thickness | 8.75 mmlead | 9.47 mm |
| Water resistanceⓘ | IP68 | IPX8lead |
| Form factor | bar | foldable_booklead |
Display
| Spec | Apple - iPhone 18 Pro Max | Xiaomi - MIX Fold 4 |
|---|---|---|
| Screen size | 6.9 " | 7.98 "lead |
| Pixel densityⓘ | 460 ppilead | 402 ppi |
| Refresh rateⓘ | 120 Hz | 120 Hz |
| Peak brightnessⓘ | 3000 nits | 3000 nits |
Performance
| Spec | Apple - iPhone 18 Pro Max | Xiaomi - MIX Fold 4 |
|---|---|---|
| RAMⓘ | 12 GB | 16 GBlead |
| Storageⓘ | 256 GB | 512 GBlead |
| AnTuTuⓘ | 3550000lead | 2040000 |
| CPU total clockⓘ | 20.3 GHz | 21.0 GHzlead |
Cameras
| Spec | Apple - iPhone 18 Pro Max | Xiaomi - MIX Fold 4 |
|---|---|---|
| Main cameraⓘ | 48 MP | 50 MPlead |
| Front camera | 18 MP | 20 MPlead |
| Optical image stabilizationⓘ | true | true |
Battery
| Spec | Apple - iPhone 18 Pro Max | Xiaomi - MIX Fold 4 |
|---|---|---|
| Battery capacityⓘ | 5391 mAhlead | 5100 mAh |
| Wired chargingⓘ | 60 W | 67 Wlead |
| Wireless chargingⓘ | 25 W | 50 Wlead |
Connectivity
| Spec | Apple - iPhone 18 Pro Max | Xiaomi - MIX Fold 4 |
|---|---|---|
| 5G supportⓘ | true | true |
| Headphone jack | false | false |
| microSD slot | false | false |
Operating System
| Spec | Apple - iPhone 18 Pro Max | Xiaomi - MIX Fold 4 |
|---|---|---|
| OS | iOSlead | Android |
| Promised OS updates | 6 yearslead | 4 years |
Frequently asked
Which has better battery, iPhone 18 Pro Max or MIX Fold 4?+
iPhone 18 Pro Max has 5.7% more battery — 5391 mAh vs 5100 mAh.
Which is lighter, iPhone 18 Pro Max or MIX Fold 4?+
MIX Fold 4 is 23g lighter — 249g vs 226g.
Is iPhone 18 Pro Max waterproof?+
iPhone 18 Pro Max has an IP68 rating.
Does MIX Fold 4 support 5G?+
Yes, MIX Fold 4 supports 5G.
Which has more RAM, iPhone 18 Pro Max or MIX Fold 4?+
MIX Fold 4 offers 16GB of RAM.
Which has a better camera, iPhone 18 Pro Max or MIX Fold 4?+
MIX Fold 4 has a 50 MP main camera vs 48 MP.