Between the OnePlus 13R and Xiaomi 15, the OnePlus 13R comes out ahead in battery capacity and screen size, while the Xiaomi 15 wins on front camera and antutu. Overall, the OnePlus 13R scores 71.3 and the Xiaomi 15 scores 70 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (71.3 vs 70). The decision isn't about overall quality — both clear the bar — it's about which specific trade-offs fit your use.
Pick the OnePlus 13R 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 battery capacity, screen size.
Pick the Xiaomi 15 if you photograph or shoot video regularly and want the better imaging pipeline of the two. Its strongest claims are front camera, antutu, weight, among others.
Both ship with comparable ram, main camera, refresh rate, 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 OnePlus 13R wins
- ▲Battery capacity — 11.11% more. 6000 mAh vs 5400 mAh.
- ▲Screen size — 6.60% more. 6.78 " vs 6.36 ".
Why Xiaomi 15 wins
- ▲Front camera — 100.00% more. 32 MP vs 16 MP.
- ▲AnTuTu — 28.85% more. 2680000 vs 2080000.
- ▲Weight — 14.00 g less. 192 vs 206.
- ▲Wired charging — 12.50% more. 90 W vs 80 W.
- ▲Pixel density — 2.22% more. 460 ppi vs 450 ppi.
- ▲Water resistance: IP68 (vs IP65).
- ▲Wireless charging: 50 W vs 0 W.
Spec comparison
Design
| Spec | OnePlus 13R | Xiaomi 15 |
|---|---|---|
| Weight | 206 g | 192 glead |
| Thickness | 8.0 mmlead | 8.1 mm |
| Water resistanceⓘ | IP65 | IP68lead |
| Form factor | bar | bar |
Display
| Spec | OnePlus 13R | Xiaomi 15 |
|---|---|---|
| Screen sizeⓘ | 6.78 "lead | 6.36 " |
| Pixel densityⓘ | 450 ppi | 460 ppilead |
| Refresh rateⓘ | 120 Hz | 120 Hz |
| Peak brightnessⓘ | 4500 nitslead | 3200 nits |
Performance
Cameras
| Spec | OnePlus 13R | Xiaomi 15 |
|---|---|---|
| Main cameraⓘ | 50 MP | 50 MP |
| Front camera | 16 MP | 32 MPlead |
| Optical image stabilizationⓘ | true | true |
Battery
| Spec | OnePlus 13R | Xiaomi 15 |
|---|---|---|
| Battery capacity | 6000 mAhlead | 5400 mAh |
| Wired chargingⓘ | 80 W | 90 Wlead |
| Wireless chargingⓘ | 0 W | 50 Wlead |
Connectivity
| Spec | OnePlus 13R | Xiaomi 15 |
|---|---|---|
| 5G supportⓘ | true | true |
| Headphone jack | false | false |
| microSD slot | false | false |
Operating System
| Spec | OnePlus 13R | Xiaomi 15 |
|---|---|---|
| OS | Android | Android |
| Promised OS updates | 4 years | 4 years |
Frequently asked
Which has better battery, OnePlus 13R or Xiaomi 15?+
OnePlus 13R has 11.1% more battery — 6000 mAh vs 5400 mAh.
Which is lighter, OnePlus 13R or Xiaomi 15?+
Xiaomi 15 is 14g lighter — 206g vs 192g.
Is OnePlus 13R waterproof?+
OnePlus 13R has an IP65 rating.
Does Xiaomi 15 support 5G?+
Yes, Xiaomi 15 supports 5G.
Which has a better camera, OnePlus 13R or Xiaomi 15?+
Xiaomi 15 has a 50 MP main camera vs 50 MP.
Spec-level deep dives
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