Between the Phone (3) and OnePlus 15, the Phone (3) comes out ahead in weight and pixel density, while the OnePlus 15 wins on wireless charging and wired charging. Overall, the Phone (3) scores 68.7 and the OnePlus 15 scores 78.4 on our Mars Score.
Which should you buy?
The OnePlus 15 is the clear pick on raw spec strength, leading by 9.7 points on the Mars Score. The margin is wide enough that the underdog only makes sense if its individual strengths line up with what you specifically need.
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.
Pick the OnePlus 15 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 wireless charging, wired charging, battery capacity, 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 15 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 — 15.00 g less. 196 vs 211.
- ▲Pixel density — 2.22% more. 460 ppi vs 450 ppi.
Why OnePlus 15 wins
- ▲Wireless charging — 233.33% more. 50 W vs 15 W.
- ▲Wired charging — 84.62% more. 120 W vs 65 W.
- ▲Battery capacity — 45.63% more. 7500 mAh vs 5150 mAh.
- ▲AnTuTu — 43.90% more. 2950000 vs 2050000.
- ▲RAM — 33.33% more. 16 GB vs 12 GB.
- ▲Screen size — 1.19% more. 6.78 " vs 6.7 ".
- ▲Water resistance: IP69 (vs IP68).
Spec comparison
Design
| Spec | Nothing - Phone (3) | OnePlus 15 |
|---|---|---|
| Weight | 196 glead | 211 g |
| Thickness | 8.4 mm | 8.3 mmlead |
| Water resistanceⓘ | IP68 | IP69lead |
| Form factor | bar | bar |
Display
| Spec | Nothing - Phone (3) | OnePlus 15 |
|---|---|---|
| Screen sizeⓘ | 6.7 " | 6.78 "lead |
| Pixel densityⓘ | 460 ppilead | 450 ppi |
| Refresh rateⓘ | 120 Hz | 120 Hz |
| Peak brightnessⓘ | 4500 nits | 4500 nits |
Performance
Cameras
| Spec | Nothing - Phone (3) | OnePlus 15 |
|---|---|---|
| Main cameraⓘ | 50 MP | 50 MP |
| Front camera | 32 MP | 32 MP |
| Optical image stabilizationⓘ | true | true |
Battery
| Spec | Nothing - Phone (3) | OnePlus 15 |
|---|---|---|
| Battery capacity | 5150 mAh | 7500 mAhlead |
| Wired chargingⓘ | 65 W | 120 Wlead |
| Wireless chargingⓘ | 15 W | 50 Wlead |
Connectivity
| Spec | Nothing - Phone (3) | OnePlus 15 |
|---|---|---|
| 5G supportⓘ | true | true |
| Headphone jack | false | false |
| microSD slot | false | false |
Operating System
| Spec | Nothing - Phone (3) | OnePlus 15 |
|---|---|---|
| OS | Android | Android |
| Promised OS updates | 5 years | 5 years |
Frequently asked
Which has better battery, Phone (3) or OnePlus 15?+
OnePlus 15 has 45.6% more battery — 5150 mAh vs 7500 mAh.
Which is lighter, Phone (3) or OnePlus 15?+
Phone (3) is 15g lighter — 196g vs 211g.
Is Phone (3) waterproof?+
Phone (3) has an IP68 rating.
Does OnePlus 15 support 5G?+
Yes, OnePlus 15 supports 5G.
Which has more RAM, Phone (3) or OnePlus 15?+
OnePlus 15 offers 16GB of RAM.
Which has a better camera, Phone (3) or OnePlus 15?+
OnePlus 15 has a 50 MP main camera vs 50 MP.
Spec-level deep dives
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