Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Apple - iPhone Duo | Xiaomi - MIX Fold 4 |
|---|---|---|
| Wireless charging | 25 W | 50 W |
| AnTuTu | 3550000 | 2040000 |
| Front camera | 12 MP | 20 MP |
| RAM | 12 GB | 16 GB |
| Weight | 254 g | 226 g |
| Wired charging | 60 W | 67 W |
Between the iPhone Duo and MIX Fold 4, the iPhone Duo comes out ahead in antutu / pixel density, while the MIX Fold 4 wins on wireless charging / front camera. Overall, the iPhone Duo scores 69.8 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 (69.8 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 Duo 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 antutu, pixel density, promised os updates. The single most decisive one: AnTuTu — 74.02% more. 3550000 vs 2040000.
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, front camera, ram, 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 Duo or Xiaomi - MIX Fold 4?
Apple - iPhone Duo leads the current Mars Score by 0.3 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 Duo if…
Apple - iPhone Duo has the measurable edge on antutu score, pixel density ppi, promised os years.
Choose Xiaomi - MIX Fold 4 if…
Xiaomi - MIX Fold 4 has the measurable edge on wireless charging w, front cam mp, ram gb.
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 Duo wins
- ▲AnTuTu — 74.02% more. 3550000 vs 2040000.
- ▲Pixel density — 6.97% more. 430 ppi vs 402 ppi.
- ▲Promised OS updates: 6 (vs 4).
Why Xiaomi - MIX Fold 4 wins
- ▲Wireless charging — 100.00% more. 50 W vs 25 W.
- ▲Front camera — 66.67% more. 20 MP vs 12 MP.
- ▲RAM — 33.33% more. 16 GB vs 12 GB.
- ▲Weight — 28.00 g less. 226 vs 254.
- ▲Wired charging — 11.67% more. 67 W vs 60 W.
- ▲Screen size — 5.00% more. 7.98 " vs 7.6 ".
- ▲Battery capacity — 4.44% more. 5100 mAh vs 4883 mAh.
- ▲Main camera — 4.17% more. 50 MP vs 48 MP.
Spec comparison
Design
| Spec | Apple - iPhone Duo | Xiaomi - MIX Fold 4 |
|---|---|---|
| Weight | 254 g | 226 glead |
| Thickness | 11.3 mm | 9.47 mmlead |
| Water resistanceⓘ | IP68 | IPX8lead |
| Form factor | foldable_book | foldable_book |
Display
| Spec | Apple - iPhone Duo | Xiaomi - MIX Fold 4 |
|---|---|---|
| Screen size | 7.6 " | 7.98 "lead |
| Pixel densityⓘ | 430 ppilead | 402 ppi |
| Refresh rateⓘ | 120 Hz | 120 Hz |
| Peak brightnessⓘ | 3000 nits | 3000 nits |
Performance
| Spec | Apple - iPhone Duo | 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 Duo | 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 Duo | Xiaomi - MIX Fold 4 |
|---|---|---|
| Battery capacityⓘ | 4883 mAh | 5100 mAhlead |
| Wired chargingⓘ | 60 W | 67 Wlead |
| Wireless chargingⓘ | 25 W | 50 Wlead |
Connectivity
| Spec | Apple - iPhone Duo | Xiaomi - MIX Fold 4 |
|---|---|---|
| 5G supportⓘ | true | true |
| Headphone jack | false | false |
| microSD slot | false | false |
Operating System
| Spec | Apple - iPhone Duo | Xiaomi - MIX Fold 4 |
|---|---|---|
| OS | iOSlead | Android |
| Promised OS updates | 6 yearslead | 4 years |
Frequently asked
Which has better battery, iPhone Duo or MIX Fold 4?+
MIX Fold 4 has 4.4% more battery — 4883 mAh vs 5100 mAh.
Which is lighter, iPhone Duo or MIX Fold 4?+
MIX Fold 4 is 28g lighter — 254g vs 226g.
Is iPhone Duo waterproof?+
iPhone Duo has an IP68 rating.
Does MIX Fold 4 support 5G?+
Yes, MIX Fold 4 supports 5G.
Which has more RAM, iPhone Duo or MIX Fold 4?+
MIX Fold 4 offers 16GB of RAM.
Which has a better camera, iPhone Duo or MIX Fold 4?+
MIX Fold 4 has a 50 MP main camera vs 48 MP.