ASUS Zenfone 6 ZS630KL vs Xiaomi 15 Ultra
The ASUS Zenfone 6 ZS630KL (2019) runs on the Qualcomm Snapdragon 855, while the Xiaomi 15 Ultra (2025) runs on the Qualcomm Snapdragon 8 Elite; launch prices were $499 and $999. By overall MobileRank rating, the Xiaomi 15 Ultra leads — 85/100 vs 47/100 (a 38-point difference). Key differences: the Xiaomi 15 Ultra has the bigger battery (6000 mAh vs 5000); the main camera is 48 MP vs 50 MP; the Xiaomi 15 Ultra is faster in AnTuTu (3,030,376 vs 824,513); the ASUS Zenfone 6 ZS630KL is noticeably lighter (190g vs 225g).
Profile comparison
Category scores
ASUS Zenfone 6 ZS630KL
Xiaomi 15 Ultra
What makes ASUS Zenfone 6 ZS630KL better?
- Lighter: 190g vs 225g
- Cheaper at launch: $499 vs $999
- Better portability (52/100 vs 29/100)
What makes Xiaomi 15 Ultra better?
- Higher AnTuTu: 3030376 vs 824513
- Better Geekbench Single: 3050 vs 968
- Better Geekbench Multi: 10200 vs 2731
- Bigger battery: 6000 vs 5000 mAh
- Faster charging: 90W vs 18W
- Better main camera: 50MP vs 48MP
- Higher refresh rate: 120Hz vs 60Hz
- Higher performance (92/100 vs 54/100)
- Better camera (87/100 vs 44/100)
- Longer battery life (80/100 vs 43/100)
- Better display (90/100 vs 43/100)
Comparison verdict
Comparing the ASUS Zenfone 6 ZS630KL vs the Xiaomi 15 Ultra, the Xiaomi 15 Ultra scores 38 points higher (85/100 vs 47/100). In the "performance" category, the Xiaomi 15 Ultra leads (92/100 vs 54/100). In the "camera" category, the Xiaomi 15 Ultra leads (87/100 vs 44/100). In the "battery" category, the Xiaomi 15 Ultra leads (80/100 vs 43/100). Value score: ASUS Zenfone 6 ZS630KL — 16/100, 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, the Xiaomi 15 Ultra significantly outperforms the ASUS Zenfone 6 ZS630KL (92/100 vs 54/100). In the "display" category, the Xiaomi 15 Ultra significantly outperforms the ASUS Zenfone 6 ZS630KL (90/100 vs 43/100). In the "camera" category, the Xiaomi 15 Ultra significantly outperforms the ASUS Zenfone 6 ZS630KL (87/100 vs 44/100). In the "battery" category, the Xiaomi 15 Ultra significantly outperforms the ASUS Zenfone 6 ZS630KL (80/100 vs 43/100). In the "portability" category, the ASUS Zenfone 6 ZS630KL notably outperforms the Xiaomi 15 Ultra (52/100 vs 29/100).
Specs comparison
| Specification | ASUS Zenfone 6 ZS630KL | Xiaomi 15 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 855 | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 824513 | 3030376 | |
| Geekbench Single | 968 | 3050 | |
| Geekbench Multi | 2731 | 10200 | |
| Display | 6.4" IPS LCD | 6.7" LTPO AMOLED | |
| Resolution | 1080x2340 | 3200x1440 | |
| Refresh rate | 60 Hz | 120 Hz | |
| Battery | 5000 mAh | 6000 mAh | |
| Charging | 18W | 90W | |
| Wireless charging | 0W | 50W | |
| DXOMark (camera) | — | 159 | |
| Main camera | 48 MP | 50 MP | |
| Ultrawide | 13 MP | 50 MP | |
| Telephoto | 0 MP | 50 MP | |
| Front camera | 48 MP | 32 MP | |
| RAM | 6GB / 8GB / 12GB | 16GB | |
| Storage | 64GB / 128GB / 256GB / 512GB | 256GB / 512GB / 1TB | |
| OS | Android 9.0 / ZenUI | Android 15 / HyperOS 2 | |
| Brightness (peak) | — | 3200 nits | |
| NFC | yes | yes | |
| Protection | — | IP68 | |
| Dimensions | 159.1×75.4×9.2 mm | 161.3×75.3×9.4 mm | |
| Weight | 190 g | 225 g | |
| Launch price | $499 | $999 |
Camera comparison
ASUS Zenfone 6 ZS630KL
- Main: 48MP f/1.8
- Ultrawide: 13MP
- Front: 48MP
Xiaomi 15 Ultra
- Main: 50MP f/1.63
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Display comparison
ASUS Zenfone 6 ZS630KL
- 6.4" IPS LCD
- Resolution: 1080x2340
- Refresh rate: 60 Hz
Xiaomi 15 Ultra
- 6.7" LTPO AMOLED
- Resolution: 3200x1440
- Refresh rate: 120 Hz
Battery and charging
ASUS Zenfone 6 ZS630KL
- 5000 mAh
- Wired: 18W
- No wireless charging
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 6 ZS630KL and Xiaomi 15 Ultra, covering their specs and all relevant benchmarks.
Xiaomi 15 Ultra leads ASUS Zenfone 6 ZS630KL by 72.8% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $500. ASUS Zenfone 6 ZS630KL was $500 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Xiaomi 15 Ultra significantly outperforms the ASUS Zenfone 6 ZS630KL (92/100 vs 54/100).
display
In the "display" category, the Xiaomi 15 Ultra significantly outperforms the ASUS Zenfone 6 ZS630KL (90/100 vs 43/100).
camera
In the "camera" category, the Xiaomi 15 Ultra significantly outperforms the ASUS Zenfone 6 ZS630KL (87/100 vs 44/100).
battery
In the "battery" category, the Xiaomi 15 Ultra significantly outperforms the ASUS Zenfone 6 ZS630KL (80/100 vs 43/100).
portability
In the "portability" category, the ASUS Zenfone 6 ZS630KL notably outperforms the Xiaomi 15 Ultra (52/100 vs 29/100).
Frequently asked questions
Which is better: the ASUS Zenfone 6 ZS630KL or the Xiaomi 15 Ultra?
The Xiaomi 15 Ultra significantly outperforms the ASUS Zenfone 6 ZS630KL by 38 points (85/100 vs 47/100).
What is the rating of the ASUS Zenfone 6 ZS630KL and the Xiaomi 15 Ultra?
The ASUS Zenfone 6 ZS630KL has a MobileRank rating of 47/100, the Xiaomi 15 Ultra — 85/100.
Which has the better camera: the ASUS Zenfone 6 ZS630KL or the Xiaomi 15 Ultra?
The Xiaomi 15 Ultra leads on camera score (87/100 vs 44/100).
Which is more powerful: the ASUS Zenfone 6 ZS630KL or the Xiaomi 15 Ultra?
The Xiaomi 15 Ultra leads on performance (92/100 vs 54/100).
Should you choose the ASUS Zenfone 6 ZS630KL over the Xiaomi 15 Ultra?
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.