OnePlus 9 vs Xiaomi 18 Pro Max
38.6Performance64.4
46.6Display69.8
39.3Camera83.6
55.9Battery92
65.3Features86.7
1 spec wins — OnePlus 911 spec wins — Xiaomi 18 Pro Max
InnoReviews verdict
Xiaomi 18 Pro Max wins this phone face-off, 77.1 to 46.5, pulling ahead mainly in camera (+44) and battery (+36). OnePlus 9 still makes sense if its price or standout specs fit your needs better.
Which would you pick?
Key differences
Reasons to pick the OnePlus 9
- 18% lower weight: 192 g vs 235 g
Reasons to pick the Xiaomi 18 Pro Max
- Stronger performance score: 64 vs 39
- Stronger display score: 70 vs 47
- Stronger camera score: 84 vs 39
- Stronger battery score: 92 vs 56
- Stronger features score: 87 vs 65
Display
| Spec | OnePlus 9 | Xiaomi 18 Pro Max |
|---|---|---|
| Screen size | 6.55 ″ | 6.9 ″+5% |
| Panel type | AMOLED | LTPO AMOLED |
| Resolution | 2400x1080 | 1208x2624 |
| Pixel density | 402 ppi | 418 ppi+4% |
| Refresh rate | 120 Hz | 120 Hz |
| Peak brightness | 1,100 nits | 4,000 nits+264% |
| Screen-to-body | — | 91.6 % |
Performance
| Spec | OnePlus 9 | Xiaomi 18 Pro Max |
|---|---|---|
| Chipset | Snapdragon 888 | Snapdragon 8 Elite Extreme Gen 6 |
| AnTuTu | 1,040,324 | — |
| Geekbench 6 (single) | 1,450Top 44% | — |
| Geekbench 6 (multi) | 3,650Top 50% | — |
| RAM (max) | 8 GB | 16 GB+100% |
| Storage options | 128GB / 256GB | 256/512GB/1TB |
| Storage type | UFS 3.1 | UFS 4.1 |
Camera
| Spec | OnePlus 9 | Xiaomi 18 Pro Max |
|---|---|---|
| Main camera | 48 MP | 200 MP+317% |
| Main aperture | f/1.8 | f/1.7 |
| Ultra-wide | 50 MP | 50 MP |
| Telephoto | — | 200 MP |
| Optical zoom | — | 3.2 x |
| Max video | 8K@30fps | 8K@30fps |
| Front camera | 16 MP | 50 MP+213% |
| OIS | No | Yes |
Battery
| Spec | OnePlus 9 | Xiaomi 18 Pro Max |
|---|---|---|
| Capacity | 4,500 mAh | 8,500 mAh+89% |
| Wired charging | 65 W | 100 W+54% |
| Wireless charging | 15 W | 50 W+233% |
Design
| Spec | OnePlus 9 | Xiaomi 18 Pro Max |
|---|---|---|
| Weight | 192 g+18% | 235 g |
| Thickness | 8.7 mm | 8.4 mm+3% |
| IP rating | — | IP66/IP68/IP69 |
| Frame material | Plastic | Aluminum |
Connectivity
| Spec | OnePlus 9 | Xiaomi 18 Pro Max |
|---|---|---|
| 5G | Yes | Yes |
| Wi-Fi | Wi-Fi 6 | Wi-Fi 7 |
| Bluetooth | 5.2 | 6.0 |
| NFC | Yes | Yes |
| USB | USB-C 3.1 | USB-C 3.2 |
| eSIM | No | No |
Software
| Spec | OnePlus 9 | Xiaomi 18 Pro Max |
|---|---|---|
| OS at launch | Android 11 (OxygenOS 11) | Android 17 (HyperOS 4) |
| OS update pledge | 3 years | — |
Audio
| Spec | OnePlus 9 | Xiaomi 18 Pro Max |
|---|---|---|
| Stereo speakers | Yes | Yes |
| 3.5mm jack | No | No |