ASUS Zenfone 9 vs Xiaomi 15 Ultra
45.8Performance79.1
49.3Display69.1
42.6Camera73.2
39.8Battery79
60Features78.7
3 spec wins — ASUS Zenfone 913 spec wins — Xiaomi 15 Ultra
InnoReviews verdict
Xiaomi 15 Ultra wins this phone face-off, 75.9 to 46.1, pulling ahead mainly in battery (+39) and performance (+33). ASUS Zenfone 9 still makes sense if its price or standout specs fit your needs better.
Which would you pick?
Key differences
Reasons to pick the ASUS Zenfone 9
- 25% lower weight: 169 g vs 226 g
- Has 3.5mm jack — the other doesn't
- Lower launch price: $699 vs $1,499
Reasons to pick the Xiaomi 15 Ultra
- Stronger performance score: 79 vs 46
- Stronger display score: 69 vs 49
- Stronger camera score: 73 vs 43
- Stronger battery score: 79 vs 40
- Stronger features score: 79 vs 60
Display
| Spec | ASUS Zenfone 9 | Xiaomi 15 Ultra |
|---|---|---|
| Screen size | 5.9 ″ | 6.73 ″+14% |
| Panel type | AMOLED | LTPO AMOLED |
| Resolution | 2400x1080 | 1440x3200 |
| Pixel density | 445 ppi | 522 ppi+17% |
| Refresh rate | 120 Hz | 120 Hz |
| Peak brightness | 1,100 nits | 3,200 nits+191% |
| Screen-to-body | — | 90 % |
Performance
| Spec | ASUS Zenfone 9 | Xiaomi 15 Ultra |
|---|---|---|
| Chipset | Snapdragon 8+ Gen 1 | Snapdragon 8 Elite |
| AnTuTu 10 | 1,300,000Top 31% | 2,650,000+104%Top 4% |
| Geekbench 6 (single) | 1,800Top 40% | 3,050+69%Top 7% |
| Geekbench 6 (multi) | 4,600Top 40% | 9,600+109%Top 5% |
| RAM (max) | 8 GB | 16 GB+100% |
| Storage options | 128GB / 256GB | 256/512GB/1TB |
| Storage type | UFS 3.1 | UFS 4.1 |
Camera
| Spec | ASUS Zenfone 9 | Xiaomi 15 Ultra |
|---|---|---|
| Main camera | 50 MP | 50 MP |
| Main aperture | f/1.9 | f/1.63 |
| Ultra-wide | 12 MP | 50 MP+317% |
| Telephoto | — | 200 MP |
| Optical zoom | — | 4.3 x |
| Max video | 8K@24fps | 8K@30fps |
| Front camera | 12 MP | 32 MP+167% |
| OIS | Yes | Yes |
Battery
| Spec | ASUS Zenfone 9 | Xiaomi 15 Ultra |
|---|---|---|
| Capacity | 4,300 mAh | 5,410 mAh+26% |
| Wired charging | 30 W | 90 W+200% |
| Wireless charging | — | 80 W |
| Active use endurance | — | 12 h |
Design
| Spec | ASUS Zenfone 9 | Xiaomi 15 Ultra |
|---|---|---|
| Weight | 169 g+25% | 226 g |
| Thickness | 9.1 mm+3% | 9.4 mm |
| IP rating | IP68 | IP68 |
| Frame material | Aluminum | Aluminum |
Connectivity
| Spec | ASUS Zenfone 9 | Xiaomi 15 Ultra |
|---|---|---|
| 5G | Yes | Yes |
| Wi-Fi | Wi-Fi 6E | Wi-Fi 7 |
| Bluetooth | 5.2 | 6.0 |
| NFC | Yes | Yes |
| USB | USB-C 2.0 | USB-C 3.2 |
| eSIM | No | Yes |
Software
| Spec | ASUS Zenfone 9 | Xiaomi 15 Ultra |
|---|---|---|
| OS at launch | Android 12 (ZenUI) | Android 15 (HyperOS 2) |
| OS update pledge | 2 years | 4 years+100% |
Audio
| Spec | ASUS Zenfone 9 | Xiaomi 15 Ultra |
|---|---|---|
| Stereo speakers | Yes | Yes |
| 3.5mm jack | Yes | No |