Between the Phone (3a) Pro and OnePlus 13R, the Phone (3a) Pro comes out ahead in front camera, while the OnePlus 13R wins on antutu and wired charging. Overall, the Phone (3a) Pro scores 63.8 and the OnePlus 13R scores 71.3 on our Mars Score.
Which should you buy?
The OnePlus 13R edges ahead on the Mars Score (63.8 vs 71.3), but the 7.5-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the Phone (3a) Pro 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.
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. Its strongest claims are antutu, wired charging, battery capacity, among others.
Both ship with comparable ram, main camera, refresh rate, so those specs don't separate the two — focus on the differences below.
Bottom line: the OnePlus 13R is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Nothing - Phone (3a) Pro wins
- ▲Front camera — 212.50% more. 50 MP vs 16 MP.
Why OnePlus 13R wins
- ▲AnTuTu — 144.71% more. 2080000 vs 850000.
- ▲Wired charging — 60.00% more. 80 W vs 50 W.
- ▲Battery capacity — 20.00% more. 6000 mAh vs 5000 mAh.
- ▲Pixel density — 16.28% more. 450 ppi vs 387 ppi.
- ▲Weight — 5.00 g less. 206 vs 211.
- ▲Water resistance: IP65 (vs IP64).
- ▲Promised OS updates: 4 (vs 3).
- ▲Screen size — 0.15% more. 6.78 " vs 6.77 ".
Spec comparison
Design
| Spec | Nothing - Phone (3a) Pro | OnePlus 13R |
|---|---|---|
| Weight | 211 g | 206 glead |
| Thickness | 8.4 mm | 8.0 mmlead |
| Water resistanceⓘ | IP64 | IP65lead |
| Form factor | bar | bar |
Display
| Spec | Nothing - Phone (3a) Pro | OnePlus 13R |
|---|---|---|
| Screen sizeⓘ | 6.77 " | 6.78 "lead |
| Pixel densityⓘ | 387 ppi | 450 ppilead |
| Refresh rateⓘ | 120 Hz | 120 Hz |
| Peak brightnessⓘ | 3000 nits | 4500 nitslead |
Performance
Cameras
| Spec | Nothing - Phone (3a) Pro | OnePlus 13R |
|---|---|---|
| Main cameraⓘ | 50 MP | 50 MP |
| Front camera | 50 MPlead | 16 MP |
| Optical image stabilizationⓘ | true | true |
Battery
| Spec | Nothing - Phone (3a) Pro | OnePlus 13R |
|---|---|---|
| Battery capacity | 5000 mAh | 6000 mAhlead |
| Wired chargingⓘ | 50 W | 80 Wlead |
| Wireless chargingⓘ | 0 W | 0 W |
Connectivity
| Spec | Nothing - Phone (3a) Pro | OnePlus 13R |
|---|---|---|
| 5G supportⓘ | true | true |
| Headphone jack | false | false |
| microSD slot | false | false |
Operating System
| Spec | Nothing - Phone (3a) Pro | OnePlus 13R |
|---|---|---|
| OS | Android | Android |
| Promised OS updates | 3 years | 4 yearslead |
Frequently asked
Which has better battery, Phone (3a) Pro or OnePlus 13R?+
OnePlus 13R has 20.0% more battery — 5000 mAh vs 6000 mAh.
Which is lighter, Phone (3a) Pro or OnePlus 13R?+
OnePlus 13R is 5g lighter — 211g vs 206g.
Is Phone (3a) Pro waterproof?+
Phone (3a) Pro has an IP64 rating.
Does OnePlus 13R support 5G?+
Yes, OnePlus 13R supports 5G.
Which has a better camera, Phone (3a) Pro or OnePlus 13R?+
OnePlus 13R has a 50 MP main camera vs 50 MP.
Spec-level deep dives
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