OnePlus 13R vs Xiaomi 15 Ultra
The Verdict
Two very different phones at very different prices. The OnePlus 13R at $599 packs a Snapdragon 8 Gen 3 with 12GB RAM, a 6000 mAh battery with 80W charging, and a solid 6.78-inch LTPO AMOLED display peaking at 4500 nits. That's genuinely flagship-tier performance and battery life for a mid-range price. The Xiaomi 15 Ultra at $999, however, is a different beast entirely. Its Snapdragon 8 Elite chip is a full generation ahead, and the camera system is in another league: a 1-inch main sensor at f/1.63, a 200MP periscope telephoto with 5x optical zoom, and 8K video capability. The 3200 x 1440 display and titanium frame with IP68 protection further justify the premium. USB-C 3.2 versus the 13R's USB 2.0 is a meaningful connectivity advantage too. Yes, the 13R's 6000 mAh battery edges out Xiaomi's 5810 mAh, and its display is actually brighter. But the 15 Ultra is for buyers who want the best smartphone camera available today, period. If camera quality and top-tier processing matter most, the Xiaomi 15 Ultra earns its price. For everyone else who wants flagship performance without flagship cost, the 13R is an exceptional value.
Who Should Buy
Buy the OnePlus 13R if…
- →Last-gen flagship Snapdragon 8 Gen 3 at a $599 price is terrific value
- →6000 mAh battery is among the largest in any flagship phone
- →4500-nit display brightness matches phones costing twice as much
Buy the Xiaomi 15 Ultra if…
- →200MP periscope telephoto with 5x optical zoom rivals Galaxy S25 Ultra
- →1-inch main sensor with Leica optics produces stunning photos
- →Titanium frame gives a premium, durable build
Category Scores
Pros & Cons
OnePlus 13R
Pros
- Last-gen flagship Snapdragon 8 Gen 3 at a $599 price is terrific value
- 6000 mAh battery is among the largest in any flagship phone
- 4500-nit display brightness matches phones costing twice as much
- 80W fast charging fills the huge battery in under 40 minutes
- Clean OxygenOS 15 is close to stock Android
Cons
- 8MP ultrawide is a notable weak point
- No wireless charging
- IP65 water resistance is below IP68 competitors
- 50MP 2x telephoto is good but not a true periscope zoom
Xiaomi 15 Ultra
Pros
- 200MP periscope telephoto with 5x optical zoom rivals Galaxy S25 Ultra
- 1-inch main sensor with Leica optics produces stunning photos
- Titanium frame gives a premium, durable build
- 4K@120fps video recording is industry-leading
- 90W fast charging and 50W wireless on a huge 5810 mAh battery
Cons
- Heavy at 229 g and thick at 9.17 mm
- Very expensive at $999 with limited global availability
- HyperOS software experience lags behind iOS and One UI
- Camera bump is extremely large
Full Specifications
| Spec | OnePlus 13R | Xiaomi 15 Ultra |
|---|---|---|
| Software | Android 15 (OxygenOS 15) | Android 15 (HyperOS 2) |
| Body | ||
| Weight | 206 g | 229 g |
| Material | Aluminum frame, Gorilla Glass 7i | Titanium frame, Gorilla Glass Victus 2 |
| IP rating | IP65 | IP68 |
| Dimensions | 161.7 x 75.8 x 8.0 mm | 161.1 x 75.2 x 9.17 mm |
| Camera | ||
| Main camera | 50 MP, f/1.8, OIS (Sony LYT-700) | 50 MP, f/1.63, OIS (1-inch sensor) |
| Front camera | 16 MP, f/2.4 | 32 MP, f/2.0 |
| Video | 4K@60fps | 8K@30fps, 4K@120fps |
| Telephoto | 50 MP, f/2.0, 2x telephoto | 200 MP, f/2.6, 5x periscope optical zoom, OIS |
| Ultrawide | 8 MP, f/2.2, 112-degree | 50 MP, f/2.0, 128-degree |
| Memory | ||
| RAM | 12 GB | 16 GB |
| Storage options | 256 GB, 512 GB | 256 GB, 512 GB, 1 TB |
| Battery | ||
| Capacity | 6000 mAh | 5810 mAh |
| Charging | 80W wired | 90W wired |
| Wireless charging | — | 50W wireless |
| Display | ||
| Size | 6.78 inches | 6.73 inches |
| Type | LTPO AMOLED | LTPO AMOLED |
| Resolution | 2780 x 1264 | 3200 x 1440 |
| Refresh rate | 1-120Hz | 1-120Hz |
| Brightness (nits) | 4500 | 3200 |
| Processor | ||
| CPU | Octa-core (1x3.3 GHz Cortex-X4 & 3x3.2 GHz Cortex-A720 & 2x3.0 GHz Cortex-A720 & 2x2.3 GHz Cortex-A520) | Octa-core (2x4.32 GHz + 6x3.53 GHz) |
| GPU | Adreno 750 | Adreno 830 |
| Chipset | Qualcomm Snapdragon 8 Gen 3 | Qualcomm Snapdragon 8 Elite |
| Connectivity | ||
| 5G | ||
| NFC | ||
| USB | USB-C 2.0 | USB-C 3.2 |
| Wi-Fi | Wi-Fi 7 | Wi-Fi 7 |
| Bluetooth | 5.4 | 5.4 |
Want to compare a third product?
Add another product for a 3-way comparison.
Related Comparisons
This comparison is based on verified manufacturer specifications covering display, performance, camera, battery, and build quality. Scores are generated by analyzing specs across weighted categories on a 10-point scale. Learn more about our methodology.
Explore more in phones, see all OnePlus products or all Xiaomi products. View full details for the OnePlus 13R or the Xiaomi 15 Ultra.