Between the OnePlus 13R and OnePlus Open 2, the OnePlus 13R comes out ahead in weight and pixel density, while the OnePlus Open 2 wins on front camera and ram. Overall, the OnePlus 13R scores 71.3 and the OnePlus Open 2 scores 74.5 on our Mars Score.
Which should you buy?
The OnePlus Open 2 edges ahead on the Mars Score (71.3 vs 74.5), but the 3.2-point gap is small enough that the right pick comes down to which spec advantages matter to you.
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, pixel density, battery capacity.
Pick the OnePlus Open 2 if you photograph or shoot video regularly and want the better imaging pipeline of the two. Its strongest claims are front camera, ram, antutu, 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 — 33.00 g less. 206 vs 239.
- ▲Pixel density — 11.94% more. 450 ppi vs 402 ppi.
- ▲Battery capacity — 5.26% more. 6000 mAh vs 5700 mAh.
Why OnePlus Open 2 wins
- ▲Front camera — 100.00% more. 32 MP vs 16 MP.
- ▲RAM — 33.33% more. 16 GB vs 12 GB.
- ▲AnTuTu — 28.85% more. 2680000 vs 2080000.
- ▲Screen size — 17.99% more. 8.0 " vs 6.78 ".
- ▲Water resistance: IP68 (vs IP65).
- ▲Wireless charging: 50 W vs 0 W.
Spec comparison
Design
| Spec | OnePlus 13R | OnePlus Open 2 |
|---|---|---|
| Weight | 206 glead | 239 g |
| Thickness | 8.0 mmlead | 11.7 mm |
| Water resistanceⓘ | IP65 | IP68lead |
| Form factor | bar | foldable_booklead |
Display
| Spec | OnePlus 13R | OnePlus Open 2 |
|---|---|---|
| Screen sizeⓘ | 6.78 " | 8.0 "lead |
| Pixel densityⓘ | 450 ppilead | 402 ppi |
| Refresh rateⓘ | 120 Hz | 120 Hz |
| Peak brightnessⓘ | 4500 nits | 4500 nits |
Performance
Cameras
| Spec | OnePlus 13R | OnePlus Open 2 |
|---|---|---|
| Main cameraⓘ | 50 MP | 50 MP |
| Front camera | 16 MP | 32 MPlead |
| Optical image stabilizationⓘ | true | true |
Battery
| Spec | OnePlus 13R | OnePlus Open 2 |
|---|---|---|
| Battery capacity | 6000 mAhlead | 5700 mAh |
| Wired chargingⓘ | 80 W | 80 W |
| Wireless chargingⓘ | 0 W | 50 Wlead |
Connectivity
| Spec | OnePlus 13R | OnePlus Open 2 |
|---|---|---|
| 5G supportⓘ | true | true |
| Headphone jack | false | false |
| microSD slot | false | false |
Operating System
| Spec | OnePlus 13R | OnePlus Open 2 |
|---|---|---|
| OS | Android | Android |
| Promised OS updates | 4 years | 4 years |
Frequently asked
Which has better battery, OnePlus 13R or OnePlus Open 2?+
OnePlus 13R has 5.3% more battery — 6000 mAh vs 5700 mAh.
Which is lighter, OnePlus 13R or OnePlus Open 2?+
OnePlus 13R is 33g lighter — 206g vs 239g.
Is OnePlus 13R waterproof?+
OnePlus 13R has an IP65 rating.
Does OnePlus Open 2 support 5G?+
Yes, OnePlus Open 2 supports 5G.
Which has more RAM, OnePlus 13R or OnePlus Open 2?+
OnePlus Open 2 offers 16GB of RAM.
Which has a better camera, OnePlus 13R or OnePlus Open 2?+
OnePlus Open 2 has a 50 MP main camera vs 50 MP.
Spec-level deep dives
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