REDMI K90 Ultra vs Xiaomi 18 Pro Max
64.4Performance64.4
78.7Display69.8
43.4Camera83.6
83.2Battery92
86.7Features86.7
5 spec wins — REDMI K90 Ultra6 spec wins — Xiaomi 18 Pro Max
InnoReviews verdict
Xiaomi 18 Pro Max wins this phone face-off, 77.1 to 69.1, pulling ahead mainly in camera (+40) and battery (+9). REDMI K90 Ultra still makes sense if its price or standout specs fit your needs better.
Which would you pick?
Key differences
Reasons to pick the REDMI K90 Ultra
- Stronger display score: 79 vs 70
- 38% higher Refresh rate: 165 Hz vs 120 Hz
Reasons to pick the Xiaomi 18 Pro Max
- Stronger camera score: 84 vs 43
- Stronger battery score: 92 vs 83
- 525% higher ultra-wide: 50 MP vs 8 MP
- 300% higher Main camera: 200 MP vs 50 MP
- 150% higher Front camera: 50 MP vs 20 MP
Display
| Spec | REDMI K90 Ultra | Xiaomi 18 Pro Max |
|---|---|---|
| Screen size | 6.83 ″ | 6.9 ″+1% |
| Panel type | AMOLED | LTPO AMOLED |
| Resolution | 1280x2772 | 1208x2624 |
| Pixel density | 447 ppi+7% | 418 ppi |
| Refresh rate | 165 Hz+38% | 120 Hz |
| Peak brightness | 3,500 nits | 4,000 nits+14% |
| Screen-to-body | 90.3 % | 91.6 %+1% |
Performance
| Spec | REDMI K90 Ultra | Xiaomi 18 Pro Max |
|---|---|---|
| Chipset | Snapdragon 8 Elite | Snapdragon 8 Elite Extreme Gen 6 |
| RAM (max) | 16 GB | 16 GB |
| Storage options | 256/512GB | 256/512GB/1TB |
| Storage type | UFS 4.1 | UFS 4.1 |
Camera
| Spec | REDMI K90 Ultra | Xiaomi 18 Pro Max |
|---|---|---|
| Main camera | 50 MP | 200 MP+300% |
| Main aperture | f/1.7 | f/1.7 |
| Ultra-wide | 8 MP | 50 MP+525% |
| Telephoto | — | 200 MP |
| Optical zoom | — | 3.2 x |
| Max video | 8K@30fps | 8K@30fps |
| Front camera | 20 MP | 50 MP+150% |
| OIS | Yes | Yes |
Battery
| Spec | REDMI K90 Ultra | Xiaomi 18 Pro Max |
|---|---|---|
| Capacity | 8,550 mAh+1% | 8,500 mAh |
| Wired charging | 100 W | 100 W |
| Wireless charging | — | 50 W |
Design
| Spec | REDMI K90 Ultra | Xiaomi 18 Pro Max |
|---|---|---|
| Weight | 227 g+3% | 235 g |
| Thickness | 8.2 mm+2% | 8.4 mm |
| IP rating | IP68/IP69 | IP66/IP68/IP69 |
| Frame material | Aluminum | Aluminum |
Connectivity
| Spec | REDMI K90 Ultra | Xiaomi 18 Pro Max |
|---|---|---|
| 5G | Yes | Yes |
| Wi-Fi | Wi-Fi 7 | Wi-Fi 7 |
| Bluetooth | 5.4 | 6.0 |
| NFC | Yes | Yes |
| USB | USB-C | USB-C 3.2 |
| eSIM | No | No |
Software
| Spec | REDMI K90 Ultra | Xiaomi 18 Pro Max |
|---|---|---|
| OS at launch | Android 16 (HyperOS 3) | Android 17 (HyperOS 4) |
Audio
| Spec | REDMI K90 Ultra | Xiaomi 18 Pro Max |
|---|---|---|
| Stereo speakers | Yes | Yes |
| 3.5mm jack | No | No |