ASUS Zenfone 12 Ultra vs Xiaomi 15 Ultra
The ASUS Zenfone 12 Ultra (2025) runs on the Qualcomm Snapdragon 8 Elite, while the Xiaomi 15 Ultra (2025) runs on the Qualcomm Snapdragon 8 Elite; launch prices were $999 and $999. By overall MobileRank rating, the Xiaomi 15 Ultra leads — 85/100 vs 75/100 (a 10-point difference). Key differences: the Xiaomi 15 Ultra has the bigger battery (6000 mAh vs 5500); the ASUS Zenfone 12 Ultra is faster in AnTuTu (3,247,013 vs 3,030,376).
Profile comparison
Category scores
ASUS Zenfone 12 Ultra
Xiaomi 15 Ultra
What makes ASUS Zenfone 12 Ultra better?
- Higher AnTuTu: 3247013 vs 3030376
- Higher refresh rate: 144Hz vs 120Hz
- Lighter: 220g vs 225g
- Better portability (38/100 vs 29/100)
What makes Xiaomi 15 Ultra better?
- Better Geekbench Single: 3050 vs 3013
- Better Geekbench Multi: 10200 vs 9287
- Bigger battery: 6000 vs 5500 mAh
- Faster charging: 90W vs 65W
- Faster wireless charging: 50W vs 15W
- Better camera (87/100 vs 56/100)
- Longer battery life (80/100 vs 66/100)
- Better display (90/100 vs 89/100)
Comparison verdict
Comparing the ASUS Zenfone 12 Ultra vs the Xiaomi 15 Ultra, the Xiaomi 15 Ultra scores 10 points higher (85/100 vs 75/100). In the "camera" category, the Xiaomi 15 Ultra leads (87/100 vs 56/100). In the "battery" category, the Xiaomi 15 Ultra leads (80/100 vs 66/100). Value score: ASUS Zenfone 12 Ultra — 60/100, Xiaomi 15 Ultra — 80/100; it shows how far a model sits above or below the usual level for its price, and is not part of the overall rating. In the "performance" category, both devices are on the same level — 92/100. In the "display" category, the Xiaomi 15 Ultra and the ASUS Zenfone 12 Ultra are nearly equal (90/100 vs 89/100). In the "camera" category, the Xiaomi 15 Ultra significantly outperforms the ASUS Zenfone 12 Ultra (87/100 vs 56/100). In the "battery" category, the Xiaomi 15 Ultra is a bit better (80/100 vs 66/100). In the "portability" category, the ASUS Zenfone 12 Ultra is a bit better (38/100 vs 29/100).
Specs comparison
| Specification | ASUS Zenfone 12 Ultra | Xiaomi 15 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 3247013 | 3030376 | |
| Geekbench Single | 3013 | 3050 | |
| Geekbench Multi | 9287 | 10200 | |
| Display | 6.8" LTPO AMOLED | 6.7" LTPO AMOLED | |
| Resolution | 2400x1080 | 3200x1440 | |
| Refresh rate | 144 Hz | 120 Hz | |
| Battery | 5500 mAh | 6000 mAh | |
| Charging | 65W | 90W | |
| Wireless charging | 15W | 50W | |
| DXOMark (camera) | — | 159 | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 13 MP | 50 MP | |
| Telephoto | 32 MP | 50 MP | |
| Front camera | 32 MP | 32 MP | |
| RAM | 12GB / 16GB | 16GB | |
| Storage | 256GB / 512GB | 256GB / 512GB / 1TB | |
| OS | Android 15 / ZenUI | Android 15 / HyperOS 2 | |
| Brightness (peak) | 2500 nits | 3200 nits | |
| NFC | yes | yes | |
| Protection | IP68 | IP68 | |
| Dimensions | 163.8×77.0×8.9 mm | 161.3×75.3×9.4 mm | |
| Weight | 220 g | 225 g | |
| Launch price | $999 | $999 |
Camera comparison
ASUS Zenfone 12 Ultra
- Main: 50MP f/1.9
- Ultrawide: 13MP
- Telephoto: 32MP
- Front: 32MP
Xiaomi 15 Ultra
- Main: 50MP f/1.63
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Display comparison
ASUS Zenfone 12 Ultra
- 6.8" LTPO AMOLED
- Resolution: 2400x1080
- Refresh rate: 144 Hz
Xiaomi 15 Ultra
- 6.7" LTPO AMOLED
- Resolution: 3200x1440
- Refresh rate: 120 Hz
Battery and charging
ASUS Zenfone 12 Ultra
- 5500 mAh
- Wired: 65W
- Wireless: 15W
Xiaomi 15 Ultra
- 6000 mAh
- NanoReview test: web browsing 12:19 hrs, total 30:03 hrs
- Wired: 90W
- Wireless: 50W
Overall performance score
We compared ASUS Zenfone 12 Ultra and Xiaomi 15 Ultra, covering their specs and all relevant benchmarks.
ASUS Zenfone 12 Ultra leads Xiaomi 15 Ultra by 7.1% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $0. Same launch price.
Detailed category analysis
performance
In the "performance" category, both devices are on the same level — 92/100.
display
In the "display" category, the Xiaomi 15 Ultra and the ASUS Zenfone 12 Ultra are nearly equal (90/100 vs 89/100).
camera
In the "camera" category, the Xiaomi 15 Ultra significantly outperforms the ASUS Zenfone 12 Ultra (87/100 vs 56/100).
battery
In the "battery" category, the Xiaomi 15 Ultra is a bit better (80/100 vs 66/100).
portability
In the "portability" category, the ASUS Zenfone 12 Ultra is a bit better (38/100 vs 29/100).
Frequently asked questions
Which is better: the ASUS Zenfone 12 Ultra or the Xiaomi 15 Ultra?
The Xiaomi 15 Ultra is noticeably better than the ASUS Zenfone 12 Ultra — the overall rating gap is 10 points.
What is the rating of the ASUS Zenfone 12 Ultra and the Xiaomi 15 Ultra?
The ASUS Zenfone 12 Ultra has a MobileRank rating of 75/100, the Xiaomi 15 Ultra — 85/100.
Which has the better camera: the ASUS Zenfone 12 Ultra or the Xiaomi 15 Ultra?
The Xiaomi 15 Ultra leads on camera score (87/100 vs 56/100).
Should you choose the ASUS Zenfone 12 Ultra over the Xiaomi 15 Ultra?
The ASUS Zenfone 12 Ultra is a better fit for gamers and power 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.