OnePlus 15s vs Xiaomi 15 Ultra
The OnePlus 15s (2026) runs on the Qualcomm Snapdragon 8 Elite Gen 5, while the Xiaomi 15 Ultra (2025) runs on the Qualcomm Snapdragon 8 Elite; estimated prices are $700 and $999. By overall MobileRank rating, the Xiaomi 15 Ultra leads — 85/100 vs 83/100 (a 2-point difference). Key differences: the OnePlus 15s has the bigger battery (7500 mAh vs 6000); the OnePlus 15s is faster in AnTuTu (3,942,923 vs 3,030,376); the OnePlus 15s is noticeably lighter (195g vs 225g).
OnePlus 15s
Xiaomi 15 Ultra
- Higher AnTuTu: 3942923 vs 3030376
- Better Geekbench Single: 3640 vs 3050
- Better Geekbench Multi: 11033 vs 10200
- Bigger battery: 7500 vs 6000 mAh
- Faster charging: 100W vs 90W
- Higher refresh rate: 165Hz vs 120Hz
- Lighter: 195g vs 225g
- Cheaper: $700 vs $999
- Higher performance (98/100 vs 92/100)
- Longer battery life (89/100 vs 80/100)
- Better display (95/100 vs 90/100)
- Better portability (64/100 vs 29/100)
- Better camera (87/100 vs 53/100)
- Better value for money (82/100 vs 78/100)
Comparing the OnePlus 15s vs the Xiaomi 15 Ultra, the Xiaomi 15 Ultra scores 2 points higher (85/100 vs 83/100). In the "camera" category, the Xiaomi 15 Ultra leads (87/100 vs 53/100). In the "performance" category, the OnePlus 15s is a bit better (98/100 vs 92/100). In the "display" category, the OnePlus 15s is a bit better (95/100 vs 90/100). In the "camera" category, the Xiaomi 15 Ultra significantly outperforms the OnePlus 15s (87/100 vs 53/100). In the "battery" category, the OnePlus 15s is a bit better (89/100 vs 80/100). In the "portability" category, the OnePlus 15s significantly outperforms the Xiaomi 15 Ultra (64/100 vs 29/100). In the "value for money" category, the Xiaomi 15 Ultra and the OnePlus 15s are nearly equal (82/100 vs 78/100).
| Specification | OnePlus 15s | Xiaomi 15 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite Gen 5 | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 3942923 | 3030376 | |
| Geekbench Single | 3640 | 3050 | |
| Geekbench Multi | 11033 | 10200 | |
| Display | 6.3" AMOLED | 6.7" LTPO AMOLED | |
| Resolution | 2640x1216 | 3200x1440 | |
| Refresh rate | 165 Hz | 120 Hz | |
| Battery | 7500 mAh | 6000 mAh | |
| Charging | 100W | 90W | |
| Wireless charging | 50W | 50W | |
| DXOMark (camera) | — | 159 | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 0 MP | 50 MP | |
| Telephoto | 50 MP | 50 MP | |
| Front camera | 16 MP | 32 MP | |
| RAM | 12GB | 16GB | |
| Storage | 256GB / 512GB | 256GB / 512GB / 1TB | |
| OS | Android 16 | Android 15 / HyperOS 2 | |
| Brightness (peak) | — | 3200 nits | |
| NFC | — | yes | |
| Protection | — | IP68 | |
| Dimensions | — | 161.3×75.3×9.4 mm | |
| Weight | 195 g | 225 g | |
| Price | $700 | $999 |
OnePlus 15s
- Main: 50MP f/f/1.8
- Telephoto: 50MP
- Front: 16MP
Xiaomi 15 Ultra
- Main: 50MP f/f/1.63
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
OnePlus 15s
- 6.3" AMOLED
- Resolution: 2640x1216
- Refresh rate: 165 Hz
Xiaomi 15 Ultra
- 6.7" LTPO AMOLED
- Resolution: 3200x1440
- Refresh rate: 120 Hz
OnePlus 15s
- 7500 mAh
- Wired: 100W
- Wireless: 50W
Xiaomi 15 Ultra
- 6000 mAh
- NanoReview test: web browsing 12:19 hrs, total 30:03 hrs
- Wired: 90W
- Wireless: 50W
We compared OnePlus 15s and Xiaomi 15 Ultra, covering their specs and all relevant benchmarks.
OnePlus 15s leads Xiaomi 15 Ultra by 30.1% in our overall performance rating.
Price difference: $299. OnePlus 15s is cheaper by $299.
performance
In the "performance" category, the OnePlus 15s is a bit better (98/100 vs 92/100).
display
In the "display" category, the OnePlus 15s is a bit better (95/100 vs 90/100).
camera
In the "camera" category, the Xiaomi 15 Ultra significantly outperforms the OnePlus 15s (87/100 vs 53/100).
battery
In the "battery" category, the OnePlus 15s is a bit better (89/100 vs 80/100).
portability
In the "portability" category, the OnePlus 15s significantly outperforms the Xiaomi 15 Ultra (64/100 vs 29/100).
value for money
In the "value for money" category, the Xiaomi 15 Ultra and the OnePlus 15s are nearly equal (82/100 vs 78/100).
Which is better: the OnePlus 15s or the Xiaomi 15 Ultra?
The Xiaomi 15 Ultra edges out the OnePlus 15s by just 2 points — the two devices are very close in overall level.
What is the rating of the OnePlus 15s and the Xiaomi 15 Ultra?
The OnePlus 15s has a MobileRank rating of 83/100, the Xiaomi 15 Ultra — 85/100.
Which has the better camera: the OnePlus 15s or the Xiaomi 15 Ultra?
The Xiaomi 15 Ultra leads on camera score (87/100 vs 53/100).
Which is more powerful: the OnePlus 15s or the Xiaomi 15 Ultra?
The OnePlus 15s leads on performance (98/100 vs 92/100).
Should you choose the OnePlus 15s over the Xiaomi 15 Ultra?
The OnePlus 15s is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers. The Xiaomi 15 Ultra is a better fit for gamers and power users, mobile photography enthusiasts, those who care about battery life, budget-conscious buyers.