Between the OnePlus 13R and MIX Fold 4, the OnePlus 13R comes out ahead in weight and wired charging, while the MIX Fold 4 wins on ram and front camera. Overall, the OnePlus 13R scores 71.3 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 (71.3 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 13R 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 weight, wired charging, battery capacity, among others.
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 ram, front camera, screen size, 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: 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 13R wins
- ▲Weight — 20.00 g less. 206 vs 226.
- ▲Wired charging — 19.40% more. 80 W vs 67 W.
- ▲Battery capacity — 17.65% more. 6000 mAh vs 5100 mAh.
- ▲Pixel density — 11.94% more. 450 ppi vs 402 ppi.
- ▲AnTuTu — 1.96% more. 2080000 vs 2040000.
Why Xiaomi - MIX Fold 4 wins
- ▲RAM — 33.33% more. 16 GB vs 12 GB.
- ▲Front camera — 25.00% more. 20 MP vs 16 MP.
- ▲Screen size — 17.70% more. 7.98 " vs 6.78 ".
- ▲Water resistance: IPX8 (vs IP65).
- ▲Wireless charging: 50 W vs 0 W.
Spec comparison
Design
| Spec | OnePlus 13R | Xiaomi - MIX Fold 4 |
|---|---|---|
| Weight | 206 glead | 226 g |
| Thickness | 8.0 mmlead | 9.47 mm |
| Water resistanceⓘ | IP65 | IPX8lead |
| Form factor | bar | foldable_booklead |
Display
| Spec | OnePlus 13R | Xiaomi - MIX Fold 4 |
|---|---|---|
| Screen sizeⓘ | 6.78 " | 7.98 "lead |
| Pixel densityⓘ | 450 ppilead | 402 ppi |
| Refresh rateⓘ | 120 Hz | 120 Hz |
| Peak brightnessⓘ | 4500 nitslead | 3000 nits |
Performance
Cameras
| Spec | OnePlus 13R | Xiaomi - MIX Fold 4 |
|---|---|---|
| Main cameraⓘ | 50 MP | 50 MP |
| Front camera | 16 MP | 20 MPlead |
| Optical image stabilizationⓘ | true | true |
Battery
| Spec | OnePlus 13R | Xiaomi - MIX Fold 4 |
|---|---|---|
| Battery capacity | 6000 mAhlead | 5100 mAh |
| Wired chargingⓘ | 80 Wlead | 67 W |
| Wireless chargingⓘ | 0 W | 50 Wlead |
Connectivity
| Spec | OnePlus 13R | Xiaomi - MIX Fold 4 |
|---|---|---|
| 5G supportⓘ | true | true |
| Headphone jack | false | false |
| microSD slot | false | false |
Operating System
| Spec | OnePlus 13R | Xiaomi - MIX Fold 4 |
|---|---|---|
| OS | Android | Android |
| Promised OS updates | 4 years | 4 years |
Frequently asked
Which has better battery, OnePlus 13R or MIX Fold 4?+
OnePlus 13R has 17.6% more battery — 6000 mAh vs 5100 mAh.
Which is lighter, OnePlus 13R or MIX Fold 4?+
OnePlus 13R is 20g lighter — 206g vs 226g.
Is OnePlus 13R waterproof?+
OnePlus 13R has an IP65 rating.
Does MIX Fold 4 support 5G?+
Yes, MIX Fold 4 supports 5G.
Which has more RAM, OnePlus 13R or MIX Fold 4?+
MIX Fold 4 offers 16GB of RAM.
Which has a better camera, OnePlus 13R or MIX Fold 4?+
MIX Fold 4 has a 50 MP main camera vs 50 MP.
Spec-level deep dives
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