Between the V40 Pro and Xiaomi 15 Ultra, the V40 Pro comes out ahead in front camera and weight, while the Xiaomi 15 Ultra wins on antutu and ram. Overall, the V40 Pro scores 67.6 and the Xiaomi 15 Ultra scores 73.8 on our Mars Score.
Which should you buy?
The Xiaomi 15 Ultra edges ahead on the Mars Score (67.6 vs 73.8), but the 6.2-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the V40 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, weight, screen size.
Pick the Xiaomi 15 Ultra if the display is what you stare at all day — refresh rate, brightness, or sharpness is where the difference will be most visible. Its strongest claims are antutu, ram, pixel density, 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 Xiaomi 15 Ultra is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Vivo - V40 Pro wins
- ▲Front camera — 56.25% more. 50 MP vs 32 MP.
- ▲Weight — 37.00 g less. 192 vs 229.
- ▲Screen size — 0.74% more. 6.78 " vs 6.73 ".
Why Xiaomi 15 Ultra wins
- ▲AnTuTu — 82.55% more. 2720000 vs 1490000.
- ▲RAM — 33.33% more. 16 GB vs 12 GB.
- ▲Pixel density — 15.49% more. 522 ppi vs 452 ppi.
- ▲Wired charging — 12.50% more. 90 W vs 80 W.
- ▲Battery capacity — 9.09% more. 6000 mAh vs 5500 mAh.
- ▲Promised OS updates: 4 (vs 3).
- ▲Wireless charging: 80 W vs 0 W.
Spec comparison
Design
| Spec | Vivo - V40 Pro | Xiaomi 15 Ultra |
|---|---|---|
| Weight | 192 glead | 229 g |
| Thickness | 7.6 mmlead | 9.4 mm |
| Water resistanceⓘ | IP68 | IP68 |
| Form factor | bar | bar |
Display
| Spec | Vivo - V40 Pro | Xiaomi 15 Ultra |
|---|---|---|
| Screen sizeⓘ | 6.78 "lead | 6.73 " |
| Pixel densityⓘ | 452 ppi | 522 ppilead |
| Refresh rateⓘ | 120 Hz | 120 Hz |
| Peak brightnessⓘ | 4500 nitslead | 3200 nits |
Performance
Cameras
| Spec | Vivo - V40 Pro | Xiaomi 15 Ultra |
|---|---|---|
| Main cameraⓘ | 50 MP | 50 MP |
| Front camera | 50 MPlead | 32 MP |
| Optical image stabilizationⓘ | true | true |
Battery
| Spec | Vivo - V40 Pro | Xiaomi 15 Ultra |
|---|---|---|
| Battery capacity | 5500 mAh | 6000 mAhlead |
| Wired chargingⓘ | 80 W | 90 Wlead |
| Wireless chargingⓘ | 0 W | 80 Wlead |
Connectivity
| Spec | Vivo - V40 Pro | Xiaomi 15 Ultra |
|---|---|---|
| 5G supportⓘ | true | true |
| Headphone jack | false | false |
| microSD slot | false | false |
Operating System
| Spec | Vivo - V40 Pro | Xiaomi 15 Ultra |
|---|---|---|
| OS | Android | Android |
| Promised OS updates | 3 years | 4 yearslead |
Frequently asked
Which has better battery, V40 Pro or Xiaomi 15 Ultra?+
Xiaomi 15 Ultra has 9.1% more battery — 5500 mAh vs 6000 mAh.
Which is lighter, V40 Pro or Xiaomi 15 Ultra?+
V40 Pro is 37g lighter — 192g vs 229g.
Is V40 Pro waterproof?+
V40 Pro has an IP68 rating.
Does Xiaomi 15 Ultra support 5G?+
Yes, Xiaomi 15 Ultra supports 5G.
Which has more RAM, V40 Pro or Xiaomi 15 Ultra?+
Xiaomi 15 Ultra offers 16GB of RAM.
Which has a better camera, V40 Pro or Xiaomi 15 Ultra?+
Xiaomi 15 Ultra has a 50 MP main camera vs 50 MP.
Spec-level deep dives
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