Between the CMF Phone 1 and OnePlus 15, the CMF Phone 1 comes out ahead in weight, while the OnePlus 15 wins on antutu and wired charging. Overall, the CMF Phone 1 scores 61.4 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 17.0 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 CMF Phone 1 if you carry the device everywhere and weight or thickness has been the deciding factor before. The biggest gaps in its favor are weight.
Pick the OnePlus 15 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 antutu, wired charging, ram, 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 - CMF Phone 1 wins
- ▲Weight — 14.00 g less. 197 vs 211.
Why OnePlus 15 wins
- ▲AnTuTu — 426.79% more. 2950000 vs 560000.
- ▲Wired charging — 263.64% more. 120 W vs 33 W.
- ▲RAM — 100.00% more. 16 GB vs 8 GB.
- ▲Front camera — 100.00% more. 32 MP vs 16 MP.
- ▲Battery capacity — 50.00% more. 7500 mAh vs 5000 mAh.
- ▲Pixel density — 13.92% more. 450 ppi vs 395 ppi.
- ▲Screen size — 1.65% more. 6.78 " vs 6.67 ".
- ▲Has Optical image stabilization.
Spec comparison
Design
| Spec | Nothing - CMF Phone 1 | OnePlus 15 |
|---|---|---|
| Weight | 197 glead | 211 g |
| Thickness | 8.2 mmlead | 8.3 mm |
| Water resistanceⓘ | IP52 | IP69lead |
| Form factor | bar | bar |
Display
| Spec | Nothing - CMF Phone 1 | OnePlus 15 |
|---|---|---|
| Screen sizeⓘ | 6.67 " | 6.78 "lead |
| Pixel densityⓘ | 395 ppi | 450 ppilead |
| Refresh rateⓘ | 120 Hz | 120 Hz |
| Peak brightnessⓘ | 2000 nits | 4500 nitslead |
Performance
Cameras
| Spec | Nothing - CMF Phone 1 | OnePlus 15 |
|---|---|---|
| Main cameraⓘ | 50 MP | 50 MP |
| Front camera | 16 MP | 32 MPlead |
| Optical image stabilizationⓘ | false | truelead |
Battery
| Spec | Nothing - CMF Phone 1 | OnePlus 15 |
|---|---|---|
| Battery capacity | 5000 mAh | 7500 mAhlead |
| Wired chargingⓘ | 33 W | 120 Wlead |
| Wireless chargingⓘ | 0 W | 50 Wlead |
Connectivity
| Spec | Nothing - CMF Phone 1 | OnePlus 15 |
|---|---|---|
| 5G supportⓘ | true | true |
| Headphone jack | false | false |
| microSD slot | truelead | false |
Operating System
| Spec | Nothing - CMF Phone 1 | OnePlus 15 |
|---|---|---|
| OS | Android | Android |
| Promised OS updates | 2 years | 5 yearslead |
Frequently asked
Which has better battery, CMF Phone 1 or OnePlus 15?+
OnePlus 15 has 50.0% more battery — 5000 mAh vs 7500 mAh.
Which is lighter, CMF Phone 1 or OnePlus 15?+
CMF Phone 1 is 14g lighter — 197g vs 211g.
Is CMF Phone 1 waterproof?+
CMF Phone 1 has an IP52 rating.
Does OnePlus 15 support 5G?+
Yes, OnePlus 15 supports 5G.
Which has more RAM, CMF Phone 1 or OnePlus 15?+
OnePlus 15 offers 16GB of RAM.
Which has a better camera, CMF Phone 1 or OnePlus 15?+
OnePlus 15 has a 50 MP main camera vs 50 MP.
Spec-level deep dives
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