ASUS Asus ROG Phone II vs Xiaomi 15 Ultra
The ASUS Asus ROG Phone II (2019) runs on the Qualcomm Snapdragon 855+, while the Xiaomi 15 Ultra (2025) runs on the Qualcomm Snapdragon 8 Elite. By overall MobileRank rating, the Xiaomi 15 Ultra leads — 85/100 vs 57/100 (a 28-point difference). Key differences: the Xiaomi 15 Ultra is faster in AnTuTu (3,030,376 vs 859,084); the Xiaomi 15 Ultra is noticeably lighter (225g vs 240g).
ASUS Asus ROG Phone II
Xiaomi 15 Ultra
- Overall rating 57/100
- Higher AnTuTu: 3030376 vs 859084
- Better Geekbench Single: 3050 vs 1031
- Better Geekbench Multi: 10200 vs 2864
- Faster charging: 90W vs 30W
- Lighter: 225g vs 240g
- Higher performance (92/100 vs 55/100)
- Longer battery life (80/100 vs 53/100)
- Better display (90/100 vs 79/100)
- Better portability (29/100 vs 20/100)
Comparing the ASUS Asus ROG Phone II vs the Xiaomi 15 Ultra, the Xiaomi 15 Ultra scores 28 points higher (85/100 vs 57/100). In the "performance" category, the Xiaomi 15 Ultra leads (92/100 vs 55/100). In the "battery" category, the Xiaomi 15 Ultra leads (80/100 vs 53/100). In the "performance" category, the Xiaomi 15 Ultra significantly outperforms the ASUS Asus ROG Phone II (92/100 vs 55/100). In the "display" category, the Xiaomi 15 Ultra is a bit better (90/100 vs 79/100). In the "battery" category, the Xiaomi 15 Ultra notably outperforms the ASUS Asus ROG Phone II (80/100 vs 53/100). In the "portability" category, the Xiaomi 15 Ultra is a bit better (29/100 vs 20/100).
| Specification | ASUS Asus ROG Phone II | Xiaomi 15 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 855+ | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 859084 | 3030376 | |
| Geekbench Single | 1031 | 3050 | |
| Geekbench Multi | 2864 | 10200 | |
| Display | 6.6" AMOLED | 6.7" LTPO AMOLED | |
| Resolution | 1080x2340 | 3200x1440 | |
| Refresh rate | 120 Hz | 120 Hz | |
| Battery | 6000 mAh | 6000 mAh | |
| Charging | 30W | 90W | |
| Wireless charging | 0W | 50W | |
| DXOMark (camera) | — | 159 | |
| Main camera | — | 50 MP | |
| Ultrawide | 48 MP | 50 MP | |
| Telephoto | 0 MP | 50 MP | |
| Front camera | 24 MP | 32 MP | |
| RAM | 8GB / 12GB | 16GB | |
| Storage | 128GB / 256GB / 512GB / 1TB | 256GB / 512GB / 1TB | |
| OS | Android 9.0 (Pie), ROG UI | Android 15 / HyperOS 2 | |
| Brightness (peak) | — | 3200 nits | |
| NFC | yes | yes | |
| Protection | — | IP68 | |
| Dimensions | 171.0×77.6×9.5 mm | 161.3×75.3×9.4 mm | |
| Weight | 240 g | 225 g | |
| Launch price | — | $999 |
ASUS Asus ROG Phone II
- Main: —
- Ultrawide: 48MP
- Front: 24MP
Xiaomi 15 Ultra
- Main: 50MP f/f/1.63
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
ASUS Asus ROG Phone II
- 6.6" AMOLED
- Resolution: 1080x2340
- Refresh rate: 120 Hz
Xiaomi 15 Ultra
- 6.7" LTPO AMOLED
- Resolution: 3200x1440
- Refresh rate: 120 Hz
ASUS Asus ROG Phone II
- 6000 mAh
- Wired: 30W
- No wireless charging
Xiaomi 15 Ultra
- 6000 mAh
- NanoReview test: web browsing 12:19 hrs, total 30:03 hrs
- Wired: 90W
- Wireless: 50W
We compared ASUS Asus ROG Phone II and Xiaomi 15 Ultra, covering their specs and all relevant benchmarks.
Xiaomi 15 Ultra leads ASUS Asus ROG Phone II by 71.7% in our overall performance rating.
ASUS Asus ROG Phone II
Price unknownperformance
In the "performance" category, the Xiaomi 15 Ultra significantly outperforms the ASUS Asus ROG Phone II (92/100 vs 55/100).
display
In the "display" category, the Xiaomi 15 Ultra is a bit better (90/100 vs 79/100).
battery
In the "battery" category, the Xiaomi 15 Ultra notably outperforms the ASUS Asus ROG Phone II (80/100 vs 53/100).
portability
In the "portability" category, the Xiaomi 15 Ultra is a bit better (29/100 vs 20/100).
Which is better: the ASUS Asus ROG Phone II or the Xiaomi 15 Ultra?
The Xiaomi 15 Ultra significantly outperforms the ASUS Asus ROG Phone II by 28 points (85/100 vs 57/100).
What is the rating of the ASUS Asus ROG Phone II and the Xiaomi 15 Ultra?
The ASUS Asus ROG Phone II has a MobileRank rating of 57/100, the Xiaomi 15 Ultra — 85/100.
Which is more powerful: the ASUS Asus ROG Phone II or the Xiaomi 15 Ultra?
The Xiaomi 15 Ultra leads on performance (92/100 vs 55/100).
Should you choose the ASUS Asus ROG Phone II over the Xiaomi 15 Ultra?
The ASUS Asus ROG Phone II is a better fit for everyday use. 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.