ASUS Zenfone 9 vs Xiaomi 15 Ultra
The ASUS Zenfone 9 (2022) runs on the Qualcomm Snapdragon 8+ Gen 1, while the Xiaomi 15 Ultra (2025) runs on the Qualcomm Snapdragon 8 Elite; launch prices were $699 and $999. By overall MobileRank rating, the Xiaomi 15 Ultra leads — 85/100 vs 56/100 (a 29-point difference). Key differences: the Xiaomi 15 Ultra has the bigger battery (6000 mAh vs 4300); the Xiaomi 15 Ultra is faster in AnTuTu (3,030,376 vs 1,425,446); the ASUS Zenfone 9 is noticeably lighter (169g vs 225g).
ASUS Zenfone 9
Xiaomi 15 Ultra
- Lighter: 169g vs 225g
- Cheaper at launch: $699 vs $999
- Better portability (66/100 vs 29/100)
- Higher AnTuTu: 3030376 vs 1425446
- Better Geekbench Single: 3050 vs 1761
- Better Geekbench Multi: 10200 vs 4688
- Bigger battery: 6000 vs 4300 mAh
- Faster charging: 90W vs 30W
- Higher performance (92/100 vs 71/100)
- Better camera (87/100 vs 36/100)
- Longer battery life (80/100 vs 30/100)
- Better display (90/100 vs 84/100)
Comparing the ASUS Zenfone 9 vs the Xiaomi 15 Ultra, the Xiaomi 15 Ultra scores 29 points higher (85/100 vs 56/100). In the "performance" category, the Xiaomi 15 Ultra leads (92/100 vs 71/100). In the "camera" category, the Xiaomi 15 Ultra leads (87/100 vs 36/100). In the "battery" category, the Xiaomi 15 Ultra leads (80/100 vs 30/100). Value score: ASUS Zenfone 9 — 24/100, Xiaomi 15 Ultra — 82/100; it is biased by price level, so it should not be compared directly between devices at different prices. In the "performance" category, the Xiaomi 15 Ultra notably outperforms the ASUS Zenfone 9 (92/100 vs 71/100). In the "display" category, the Xiaomi 15 Ultra is a bit better (90/100 vs 84/100). In the "camera" category, the Xiaomi 15 Ultra significantly outperforms the ASUS Zenfone 9 (87/100 vs 36/100). In the "battery" category, the Xiaomi 15 Ultra significantly outperforms the ASUS Zenfone 9 (80/100 vs 30/100). In the "portability" category, the ASUS Zenfone 9 significantly outperforms the Xiaomi 15 Ultra (66/100 vs 29/100).
| Specification | ASUS Zenfone 9 | Xiaomi 15 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8+ Gen 1 | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 1425446 | 3030376 | |
| Geekbench Single | 1761 | 3050 | |
| Geekbench Multi | 4688 | 10200 | |
| Display | 5.9" Super AMOLED | 6.7" LTPO AMOLED | |
| Resolution | 2400x1080 | 3200x1440 | |
| Refresh rate | 120 Hz | 120 Hz | |
| Battery | 4300 mAh | 6000 mAh | |
| Charging | 30W | 90W | |
| Wireless charging | 0W | 50W | |
| DXOMark (camera) | — | 159 | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 12 MP | 50 MP | |
| Telephoto | 0 MP | 50 MP | |
| Front camera | 12 MP | 32 MP | |
| RAM | 6GB / 8GB / 16GB | 16GB | |
| Storage | 128GB / 256GB | 256GB / 512GB / 1TB | |
| OS | Android 12 / ZenUI | Android 15 / HyperOS 2 | |
| Brightness (peak) | 1100 nits | 3200 nits | |
| NFC | yes | yes | |
| Protection | IP68 | IP68 | |
| Dimensions | 146.5×68.1×9.1 mm | 161.3×75.3×9.4 mm | |
| Weight | 169 g | 225 g | |
| Launch price | $699 | $999 |
ASUS Zenfone 9
- Main: 50MP f/f/1.9
- Ultrawide: 12MP
- Front: 12MP
Xiaomi 15 Ultra
- Main: 50MP f/f/1.63
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
ASUS Zenfone 9
- 5.9" Super AMOLED
- Resolution: 2400x1080
- Refresh rate: 120 Hz
Xiaomi 15 Ultra
- 6.7" LTPO AMOLED
- Resolution: 3200x1440
- Refresh rate: 120 Hz
ASUS Zenfone 9
- 4300 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 Zenfone 9 and Xiaomi 15 Ultra, covering their specs and all relevant benchmarks.
Xiaomi 15 Ultra leads ASUS Zenfone 9 by 53.0% in our overall performance rating.
Launch price difference: $300. ASUS Zenfone 9 was $300 cheaper at launch.
performance
In the "performance" category, the Xiaomi 15 Ultra notably outperforms the ASUS Zenfone 9 (92/100 vs 71/100).
display
In the "display" category, the Xiaomi 15 Ultra is a bit better (90/100 vs 84/100).
camera
In the "camera" category, the Xiaomi 15 Ultra significantly outperforms the ASUS Zenfone 9 (87/100 vs 36/100).
battery
In the "battery" category, the Xiaomi 15 Ultra significantly outperforms the ASUS Zenfone 9 (80/100 vs 30/100).
portability
In the "portability" category, the ASUS Zenfone 9 significantly outperforms the Xiaomi 15 Ultra (66/100 vs 29/100).
Which is better: the ASUS Zenfone 9 or the Xiaomi 15 Ultra?
The Xiaomi 15 Ultra significantly outperforms the ASUS Zenfone 9 by 29 points (85/100 vs 56/100).
What is the rating of the ASUS Zenfone 9 and the Xiaomi 15 Ultra?
The ASUS Zenfone 9 has a MobileRank rating of 56/100, the Xiaomi 15 Ultra — 85/100.
Which has the better camera: the ASUS Zenfone 9 or the Xiaomi 15 Ultra?
The Xiaomi 15 Ultra leads on camera score (87/100 vs 36/100).
Which is more powerful: the ASUS Zenfone 9 or the Xiaomi 15 Ultra?
The Xiaomi 15 Ultra leads on performance (92/100 vs 71/100).
Should you choose the ASUS Zenfone 9 over the Xiaomi 15 Ultra?
The ASUS Zenfone 9 is a better fit for active users. 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.