Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | OnePlus 13R | Xiaomi - MIX Fold 4 |
|---|---|---|
| RAM | 12 GB | 16 GB |
| Front camera | 16 MP | 20 MP |
| Weight | 206 g | 226 g |
| Wired charging | 80 W | 67 W |
| Screen size | 6.78 " | 7.98 " |
| Battery capacity | 6000 mAh | 5100 mAh |
Between the OnePlus 13R and MIX Fold 4, the OnePlus 13R comes out ahead in weight / wired charging, while the MIX Fold 4 wins on ram / front camera. Overall, the OnePlus 13R scores 70.3 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 (70.3 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 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. The single most decisive one: Weight — 20.00 g less. 206 vs 226.
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. The single most decisive one: RAM — 33.33% more. 16 GB vs 12 GB.
Both ship with comparable main camera, refresh rate, 5g support, 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: OnePlus 13R or Xiaomi - MIX Fold 4?
OnePlus 13R leads the current Mars Score by 0.8 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 OnePlus 13R if…
OnePlus 13R has the measurable edge on weight g, wired charging w, battery capacity mah.
Choose Xiaomi - MIX Fold 4 if…
Xiaomi - MIX Fold 4 has the measurable edge on ram gb, front cam mp, screen size in.
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 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
| Spec | OnePlus 13R | Xiaomi - MIX Fold 4 |
|---|---|---|
| RAMⓘ | 12 GB | 16 GBlead |
| Storageⓘ | 256 GB | 512 GBlead |
| AnTuTuⓘ | 2080000lead | 2040000 |
| CPU total clockⓘ | 21.4 GHzlead | 21.0 GHz |
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.