OnePlus 15 vs Xiaomi 12S Ultra
The OnePlus 15 (2025) runs on the Qualcomm Snapdragon 8 Elite Gen 5, while the Xiaomi 12S Ultra (2022) runs on the Qualcomm Snapdragon 8+ Gen 1. By overall MobileRank rating, the OnePlus 15 leads — 86/100 vs 71/100 (a 15-point difference). Key differences: the OnePlus 15 has the bigger battery (6500 mAh vs 4800); the main camera is 50 MP vs 3 MP; the OnePlus 15 is faster in AnTuTu (3,606,149 vs 1,627,862); the OnePlus 15 is thinner (8.1mm vs 9.1mm).
Profile comparison
Category scores
OnePlus 15
Xiaomi 12S Ultra
What makes OnePlus 15 better?
- Higher AnTuTu: 3606149 vs 1627862
- Better Geekbench Single: 3639 vs 1761
- Better Geekbench Multi: 11047 vs 4688
- Bigger battery: 6500 vs 4800 mAh
- Faster charging: 120W vs 67W
- Better main camera: 50MP vs 3MP
- Lighter: 213g vs 225g
- Higher performance (97/100 vs 73/100)
- Better camera (78/100 vs 70/100)
- Longer battery life (89/100 vs 64/100)
- Better portability (50/100 vs 32/100)
What makes Xiaomi 12S Ultra better?
- Better display (90/100 vs 84/100)
Comparison verdict
Comparing the OnePlus 15 vs the Xiaomi 12S Ultra, the OnePlus 15 scores 15 points higher (86/100 vs 71/100). In the "performance" category, the OnePlus 15 leads (97/100 vs 73/100). In the "battery" category, the OnePlus 15 leads (89/100 vs 64/100). In the "performance" category, the OnePlus 15 notably outperforms the Xiaomi 12S Ultra (97/100 vs 73/100). In the "display" category, the Xiaomi 12S Ultra is a bit better (90/100 vs 84/100). In the "camera" category, the OnePlus 15 is a bit better (78/100 vs 70/100). In the "battery" category, the OnePlus 15 notably outperforms the Xiaomi 12S Ultra (89/100 vs 64/100). In the "portability" category, the OnePlus 15 notably outperforms the Xiaomi 12S Ultra (50/100 vs 32/100).
Specs comparison
| Specification | OnePlus 15 | Xiaomi 12S Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite Gen 5 | Qualcomm Snapdragon 8+ Gen 1 | |
| AnTuTu | 3606149 | 1627862 | |
| Geekbench Single | 3639 | 1761 | |
| Geekbench Multi | 11047 | 4688 | |
| Display | 6.8" AMOLED | 6.7" LTPO2 AMOLED | |
| Resolution | 1272x2772 | 1440x3200 | |
| Refresh rate | 120 Hz | 120 Hz | |
| Battery | 6500 mAh | 4800 mAh | |
| Charging | 120W | 67W | |
| Wireless charging | 50W | 50W | |
| DXOMark (camera) | — | 136 | |
| Main camera | 50 MP | 3 MP | |
| Ultrawide | 50 MP | 48 MP | |
| Telephoto | 50 MP | 48 MP | |
| Front camera | 32 MP | 32 MP | |
| RAM | 12GB / 16GB | 8GB / 12GB | |
| Storage | 256GB / 512GB | 256GB / 512GB | |
| OS | Android 16, OxygenOS 16 (Global), ColorOS 16 (China) | Android 12, MIUI 13 | |
| Brightness (peak) | 1800 nits | 1500 nits | |
| NFC | yes | yes | |
| Protection | IP68 | IP68 | |
| Dimensions | 161.4×76.7×8.1 mm | 163.2×75.0×9.1 mm | |
| Weight | 213 g | 225 g | |
| Launch price | $799 | — |
Camera comparison
OnePlus 15
- Main: 50MP f/1.8
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Xiaomi 12S Ultra
- Main: 3MP f/1.9
- Ultrawide: 48MP
- Telephoto: 48MP
- Front: 32MP
Display comparison
OnePlus 15
- 6.8" AMOLED
- Resolution: 1272x2772
- Refresh rate: 120 Hz
Xiaomi 12S Ultra
- 6.7" LTPO2 AMOLED
- Resolution: 1440x3200
- Refresh rate: 120 Hz
Battery and charging
OnePlus 15
- 6500 mAh
- Wired: 120W
- Wireless: 50W
Xiaomi 12S Ultra
- 4800 mAh
- Wired: 67W
- Wireless: 50W
Overall performance score
We compared OnePlus 15 and Xiaomi 12S Ultra, covering their specs and all relevant benchmarks.
OnePlus 15 leads Xiaomi 12S Ultra by 121.5% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Xiaomi 12S Ultra
Price unknownDetailed category analysis
performance
In the "performance" category, the OnePlus 15 notably outperforms the Xiaomi 12S Ultra (97/100 vs 73/100).
display
In the "display" category, the Xiaomi 12S Ultra is a bit better (90/100 vs 84/100).
camera
In the "camera" category, the OnePlus 15 is a bit better (78/100 vs 70/100).
battery
In the "battery" category, the OnePlus 15 notably outperforms the Xiaomi 12S Ultra (89/100 vs 64/100).
portability
In the "portability" category, the OnePlus 15 notably outperforms the Xiaomi 12S Ultra (50/100 vs 32/100).
Frequently asked questions
Which is better: the OnePlus 15 or the Xiaomi 12S Ultra?
The OnePlus 15 is noticeably better than the Xiaomi 12S Ultra — the overall rating gap is 15 points.
What is the rating of the OnePlus 15 and the Xiaomi 12S Ultra?
The OnePlus 15 has a MobileRank rating of 86/100, the Xiaomi 12S Ultra — 71/100.
Which has the better camera: the OnePlus 15 or the Xiaomi 12S Ultra?
The OnePlus 15 leads on camera score (78/100 vs 70/100).
Which is more powerful: the OnePlus 15 or the Xiaomi 12S Ultra?
The OnePlus 15 leads on performance (97/100 vs 73/100).
Should you choose the OnePlus 15 over the Xiaomi 12S Ultra?
The OnePlus 15 is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers. The Xiaomi 12S Ultra is a better fit for active users.