Between the iQOO 13 and Xiaomi 15 Ultra, the iQOO 13 comes out ahead in wired charging and refresh rate, while the Xiaomi 15 Ultra wins on pixel density and wireless charging. Overall, the iQOO 13 scores 75.3 and the Xiaomi 15 Ultra scores 73.8 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (75.3 vs 73.8). The decision isn't about overall quality — both clear the bar — it's about which specific trade-offs fit your use.
Pick the iQOO 13 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 wired charging, refresh rate, weight, among others.
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 pixel density, wireless charging.
Both ship with comparable ram, main camera, 5g support, so those specs don't separate the two — focus on the differences below.
Bottom line: there is no wrong answer here — match the spec advantages to how you actually use the product. The Mars Score parity tells you both are well-rounded; the differences are about trade-offs, not quality.
Why Vivo - iQOO 13 wins
- ▲Wired charging — 33.33% more. 120 W vs 90 W.
- ▲Refresh rate — 20.00% more. 144 Hz vs 120 Hz.
- ▲Weight — 16.00 g less. 213 vs 229.
- ▲AnTuTu — 3.68% more. 2820000 vs 2720000.
- ▲Battery capacity — 2.50% more. 6150 mAh vs 6000 mAh.
- ▲Screen size — 1.34% more. 6.82 " vs 6.73 ".
- ▲Water resistance: IP69 (vs IP68).
Why Xiaomi 15 Ultra wins
- ▲Pixel density — 2.35% more. 522 ppi vs 510 ppi.
- ▲Wireless charging: 80 W vs 0 W.
Spec comparison
Design
| Spec | Vivo - iQOO 13 | Xiaomi 15 Ultra |
|---|---|---|
| Weight | 213 glead | 229 g |
| Thickness | 8.13 mmlead | 9.4 mm |
| Water resistanceⓘ | IP69lead | IP68 |
| Form factor | bar | bar |
Display
| Spec | Vivo - iQOO 13 | Xiaomi 15 Ultra |
|---|---|---|
| Screen sizeⓘ | 6.82 "lead | 6.73 " |
| Pixel densityⓘ | 510 ppi | 522 ppilead |
| Refresh rateⓘ | 144 Hzlead | 120 Hz |
| Peak brightnessⓘ | 4500 nitslead | 3200 nits |
Performance
Cameras
| Spec | Vivo - iQOO 13 | Xiaomi 15 Ultra |
|---|---|---|
| Main cameraⓘ | 50 MP | 50 MP |
| Front camera | 32 MP | 32 MP |
| Optical image stabilizationⓘ | true | true |
Battery
| Spec | Vivo - iQOO 13 | Xiaomi 15 Ultra |
|---|---|---|
| Battery capacity | 6150 mAhlead | 6000 mAh |
| Wired chargingⓘ | 120 Wlead | 90 W |
| Wireless chargingⓘ | 0 W | 80 Wlead |
Connectivity
| Spec | Vivo - iQOO 13 | Xiaomi 15 Ultra |
|---|---|---|
| 5G supportⓘ | true | true |
| Headphone jack | false | false |
| microSD slot | false | false |
Operating System
| Spec | Vivo - iQOO 13 | Xiaomi 15 Ultra |
|---|---|---|
| OS | Android | Android |
| Promised OS updates | 4 years | 4 years |
Frequently asked
Which has better battery, iQOO 13 or Xiaomi 15 Ultra?+
iQOO 13 has 2.5% more battery — 6150 mAh vs 6000 mAh.
Which is lighter, iQOO 13 or Xiaomi 15 Ultra?+
iQOO 13 is 16g lighter — 213g vs 229g.
Is iQOO 13 waterproof?+
iQOO 13 has an IP69 rating.
Does Xiaomi 15 Ultra support 5G?+
Yes, Xiaomi 15 Ultra supports 5G.
Which has a better camera, iQOO 13 or Xiaomi 15 Ultra?+
Xiaomi 15 Ultra has a 50 MP main camera vs 50 MP.
Spec-level deep dives
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