Between the Phone (3) and OnePlus Open 2, the Phone (3) comes out ahead in weight and pixel density, while the OnePlus Open 2 wins on wireless charging and ram. Overall, the Phone (3) scores 68.7 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 (68.7 vs 74.5), but the 5.8-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the Phone (3) if the display is what you stare at all day — refresh rate, brightness, or sharpness is where the difference will be most visible. The biggest gaps in its favor are weight, pixel density, promised os updates.
Pick the OnePlus Open 2 if you push the hardware — gaming, on-device AI, heavy multitasking — and the extra compute headroom is worth the trade-offs. Its strongest claims are wireless charging, 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: the OnePlus Open 2 is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Nothing - Phone (3) wins
- ▲Weight — 43.00 g less. 196 vs 239.
- ▲Pixel density — 14.43% more. 460 ppi vs 402 ppi.
- ▲Promised OS updates: 5 (vs 4).
Why OnePlus Open 2 wins
- ▲Wireless charging — 233.33% more. 50 W vs 15 W.
- ▲RAM — 33.33% more. 16 GB vs 12 GB.
- ▲AnTuTu — 30.73% more. 2680000 vs 2050000.
- ▲Wired charging — 23.08% more. 80 W vs 65 W.
- ▲Screen size — 19.40% more. 8.0 " vs 6.7 ".
- ▲Battery capacity — 10.68% more. 5700 mAh vs 5150 mAh.
Spec comparison
Design
| Spec | Nothing - Phone (3) | OnePlus Open 2 |
|---|---|---|
| Weight | 196 glead | 239 g |
| Thickness | 8.4 mmlead | 11.7 mm |
| Water resistanceⓘ | IP68 | IP68 |
| Form factor | bar | foldable_booklead |
Display
| Spec | Nothing - Phone (3) | OnePlus Open 2 |
|---|---|---|
| Screen sizeⓘ | 6.7 " | 8.0 "lead |
| Pixel densityⓘ | 460 ppilead | 402 ppi |
| Refresh rateⓘ | 120 Hz | 120 Hz |
| Peak brightnessⓘ | 4500 nits | 4500 nits |
Performance
Cameras
| Spec | Nothing - Phone (3) | OnePlus Open 2 |
|---|---|---|
| Main cameraⓘ | 50 MP | 50 MP |
| Front camera | 32 MP | 32 MP |
| Optical image stabilizationⓘ | true | true |
Battery
| Spec | Nothing - Phone (3) | OnePlus Open 2 |
|---|---|---|
| Battery capacity | 5150 mAh | 5700 mAhlead |
| Wired chargingⓘ | 65 W | 80 Wlead |
| Wireless chargingⓘ | 15 W | 50 Wlead |
Connectivity
| Spec | Nothing - Phone (3) | OnePlus Open 2 |
|---|---|---|
| 5G supportⓘ | true | true |
| Headphone jack | false | false |
| microSD slot | false | false |
Operating System
| Spec | Nothing - Phone (3) | OnePlus Open 2 |
|---|---|---|
| OS | Android | Android |
| Promised OS updates | 5 yearslead | 4 years |
Frequently asked
Which has better battery, Phone (3) or OnePlus Open 2?+
OnePlus Open 2 has 10.7% more battery — 5150 mAh vs 5700 mAh.
Which is lighter, Phone (3) or OnePlus Open 2?+
Phone (3) is 43g lighter — 196g vs 239g.
Is Phone (3) waterproof?+
Phone (3) has an IP68 rating.
Does OnePlus Open 2 support 5G?+
Yes, OnePlus Open 2 supports 5G.
Which has more RAM, Phone (3) or OnePlus Open 2?+
OnePlus Open 2 offers 16GB of RAM.
Which has a better camera, Phone (3) or OnePlus Open 2?+
OnePlus Open 2 has a 50 MP main camera vs 50 MP.
Spec-level deep dives
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