Between the OnePlus 13 and MIX Fold 4, the OnePlus 13 comes out ahead in front camera and wired charging, while the MIX Fold 4 wins on screen size and water resistance. Overall, the OnePlus 13 scores 73.8 and the MIX Fold 4 scores 71.4 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (73.8 vs 71.4). The decision isn't about overall quality — both clear the bar — it's about which specific trade-offs fit your use.
Pick the OnePlus 13 if you photograph or shoot video regularly and want the better imaging pipeline of the two. The biggest gaps in its favor are front camera, wired charging, antutu, among others.
Pick the MIX Fold 4 if the display is what you stare at all day — refresh rate, brightness, or sharpness is where the difference will be most visible. Its strongest claims are screen size, water resistance.
Both ship with comparable ram, main camera, refresh rate, 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 OnePlus 13 wins
- ▲Front camera — 60.00% more. 32 MP vs 20 MP.
- ▲Wired charging — 49.25% more. 100 W vs 67 W.
- ▲AnTuTu — 29.41% more. 2640000 vs 2040000.
- ▲Pixel density — 26.87% more. 510 ppi vs 402 ppi.
- ▲Battery capacity — 17.65% more. 6000 mAh vs 5100 mAh.
- ▲Weight — 16.00 g less. 210 vs 226.
Why Xiaomi - MIX Fold 4 wins
- ▲Screen size — 17.01% more. 7.98 " vs 6.82 ".
- ▲Water resistance: IPX8 (vs IP69).
Spec comparison
Design
| Spec | OnePlus 13 | Xiaomi - MIX Fold 4 |
|---|---|---|
| Weight | 210 glead | 226 g |
| Thickness | 8.5 mmlead | 9.47 mm |
| Water resistanceⓘ | IP69 | IPX8lead |
| Form factor | bar | foldable_booklead |
Display
| Spec | OnePlus 13 | Xiaomi - MIX Fold 4 |
|---|---|---|
| Screen sizeⓘ | 6.82 " | 7.98 "lead |
| Pixel densityⓘ | 510 ppilead | 402 ppi |
| Refresh rateⓘ | 120 Hz | 120 Hz |
| Peak brightnessⓘ | 4500 nitslead | 3000 nits |
Performance
Cameras
| Spec | OnePlus 13 | Xiaomi - MIX Fold 4 |
|---|---|---|
| Main cameraⓘ | 50 MP | 50 MP |
| Front camera | 32 MPlead | 20 MP |
| Optical image stabilizationⓘ | true | true |
Battery
| Spec | OnePlus 13 | Xiaomi - MIX Fold 4 |
|---|---|---|
| Battery capacity | 6000 mAhlead | 5100 mAh |
| Wired chargingⓘ | 100 Wlead | 67 W |
| Wireless chargingⓘ | 50 W | 50 W |
Connectivity
| Spec | OnePlus 13 | Xiaomi - MIX Fold 4 |
|---|---|---|
| 5G supportⓘ | true | true |
| Headphone jack | false | false |
| microSD slot | false | false |
Operating System
| Spec | OnePlus 13 | Xiaomi - MIX Fold 4 |
|---|---|---|
| OS | Android | Android |
| Promised OS updates | 4 years | 4 years |
Frequently asked
Which has better battery, OnePlus 13 or MIX Fold 4?+
OnePlus 13 has 17.6% more battery — 6000 mAh vs 5100 mAh.
Which is lighter, OnePlus 13 or MIX Fold 4?+
OnePlus 13 is 16g lighter — 210g vs 226g.
Is OnePlus 13 waterproof?+
OnePlus 13 has an IP69 rating.
Does MIX Fold 4 support 5G?+
Yes, MIX Fold 4 supports 5G.
Which has a better camera, OnePlus 13 or MIX Fold 4?+
MIX Fold 4 has a 50 MP main camera vs 50 MP.
Spec-level deep dives
More from the same brands
vsMars is reader-supported. When you buy through links on our site, we may earn an affiliate commission at no extra cost to you. Learn more.