Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | OnePlus 15 | Vivo - V40 Pro |
|---|---|---|
| AnTuTu | 2950000 | 1490000 |
| Front camera | 32 MP | 50 MP |
| Wired charging | 120 W | 80 W |
| Battery capacity | 7500 mAh | 5500 mAh |
| RAM | 16 GB | 12 GB |
| Weight | 211 g | 192 g |
Between the OnePlus 15 and V40 Pro, the OnePlus 15 comes out ahead in antutu / wired charging, while the V40 Pro wins on front camera / weight. Overall, the OnePlus 15 scores 76.7 and the V40 Pro scores 67.2 on our Mars Score.
Which should you buy?
The OnePlus 15 is the clear pick on raw spec strength, leading by 9.5 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 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. The biggest gaps in its favor are antutu, wired charging, battery capacity, among others. The single most decisive one: AnTuTu — 97.99% more. 2950000 vs 1490000.
Pick the V40 Pro if you photograph or shoot video regularly and want the better imaging pipeline of the two. Its strongest claims are front camera, weight, pixel density. The single most decisive one: Front camera — 56.25% more. 50 MP vs 32 MP.
Both ship with comparable main camera, screen size, refresh rate, so those specs do not 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.
Which should you buy: OnePlus 15 or Vivo - V40 Pro?
OnePlus 15 leads the current Mars Score by 9.5 points.The more useful decision is the trade-off behind that result: compare ram, pixel density, battery capacity against the way you will actually use the product.
Choose OnePlus 15 if…
OnePlus 15 has the measurable edge on antutu score, wired charging w, battery capacity mah.
Choose Vivo - V40 Pro if…
Vivo - V40 Pro has the measurable edge on front cam mp, weight g, pixel density ppi.
This is a structured comparison of the published catalog values. It is not a claim of identical real-world performance across every workload; use the linked spec drill-downs and methodology page to inspect the inputs.
Why OnePlus 15 wins
- ▲AnTuTu — 97.99% more. 2950000 vs 1490000.
- ▲Wired charging — 50.00% more. 120 W vs 80 W.
- ▲Battery capacity — 36.36% more. 7500 mAh vs 5500 mAh.
- ▲RAM — 33.33% more. 16 GB vs 12 GB.
- ▲Water resistance: IP69 (vs IP68).
- ▲Promised OS updates: 5 (vs 3).
- ▲Wireless charging: 50 W vs 0 W.
Why Vivo - V40 Pro wins
- ▲Front camera — 56.25% more. 50 MP vs 32 MP.
- ▲Weight — 19.00 g less. 192 vs 211.
- ▲Pixel density — 0.44% more. 452 ppi vs 450 ppi.
Spec comparison
Design
| Spec | OnePlus 15 | Vivo - V40 Pro |
|---|---|---|
| Weight | 211 g | 192 glead |
| Thickness | 8.3 mm | 7.6 mmlead |
| Water resistanceⓘ | IP69lead | IP68 |
| Form factor | bar | bar |
Display
| Spec | OnePlus 15 | Vivo - V40 Pro |
|---|---|---|
| Screen size | 6.78 " | 6.78 " |
| Pixel densityⓘ | 450 ppi | 452 ppilead |
| Refresh rateⓘ | 120 Hz | 120 Hz |
| Peak brightnessⓘ | 4500 nits | 4500 nits |
Performance
| Spec | OnePlus 15 | Vivo - V40 Pro |
|---|---|---|
| RAMⓘ | 16 GBlead | 12 GB |
| Storageⓘ | 512 GBlead | 256 GB |
| AnTuTuⓘ | 2950000lead | 1490000 |
| CPU total clockⓘ | 23.6 GHzlead | 16.0 GHz |
Cameras
| Spec | OnePlus 15 | Vivo - V40 Pro |
|---|---|---|
| Main cameraⓘ | 50 MP | 50 MP |
| Front camera | 32 MP | 50 MPlead |
| Optical image stabilizationⓘ | true | true |
Battery
| Spec | OnePlus 15 | Vivo - V40 Pro |
|---|---|---|
| Battery capacityⓘ | 7500 mAhlead | 5500 mAh |
| Wired chargingⓘ | 120 Wlead | 80 W |
| Wireless chargingⓘ | 50 Wlead | 0 W |
Connectivity
| Spec | OnePlus 15 | Vivo - V40 Pro |
|---|---|---|
| 5G supportⓘ | true | true |
| Headphone jack | false | false |
| microSD slot | false | false |
Operating System
| Spec | OnePlus 15 | Vivo - V40 Pro |
|---|---|---|
| OS | Android | Android |
| Promised OS updates | 5 yearslead | 3 years |
Frequently asked
Which has better battery, OnePlus 15 or V40 Pro?+
OnePlus 15 has 36.4% more battery — 7500 mAh vs 5500 mAh.
Which is lighter, OnePlus 15 or V40 Pro?+
V40 Pro is 19g lighter — 211g vs 192g.
Is OnePlus 15 waterproof?+
OnePlus 15 has an IP69 rating.
Does V40 Pro support 5G?+
Yes, V40 Pro supports 5G.
Which has more RAM, OnePlus 15 or V40 Pro?+
OnePlus 15 offers 16GB of RAM.
Which has a better camera, OnePlus 15 or V40 Pro?+
V40 Pro has a 50 MP main camera vs 50 MP.