REDMI K90 Ultra vs Samsung Galaxy A51
64.4Performance20
78.7Display30.8
43.4Camera34.7
83.2Battery29.4
86.7Features33.3
10 spec wins — REDMI K90 Ultra5 spec wins — Samsung Galaxy A51
InnoReviews verdict
REDMI K90 Ultra wins this phone face-off, 69.1 to 28.3, pulling ahead mainly in battery (+54) and features (+53). Samsung Galaxy A51 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 performance score: 64 vs 20
- Stronger display score: 79 vs 31
- Stronger camera score: 43 vs 35
- Stronger battery score: 83 vs 29
- Stronger features score: 87 vs 33
Reasons to pick the Samsung Galaxy A51
- 60% higher Front camera: 32 MP vs 20 MP
- 50% higher ultra-wide: 12 MP vs 8 MP
- 24% lower weight: 172 g vs 227 g
- Has 3.5mm jack — the other doesn't
Display
| Spec | REDMI K90 Ultra | Samsung Galaxy A51 |
|---|---|---|
| Screen size | 6.83 ″+5% | 6.5 ″ |
| Panel type | AMOLED | Super AMOLED |
| Resolution | 1280x2772 | 2400x1080 |
| Pixel density | 447 ppi+10% | 405 ppi |
| Refresh rate | 165 Hz+175% | 60 Hz |
| Peak brightness | 3,500 nits | — |
| Screen-to-body | 90.3 % | — |
Performance
| Spec | REDMI K90 Ultra | Samsung Galaxy A51 |
|---|---|---|
| Chipset | Snapdragon 8 Elite | Samsung Exynos 9611 |
| AnTuTu | — | 215,000 |
| Geekbench 6 (single) | — | 350Bottom 1% |
| Geekbench 6 (multi) | — | 1,250Bottom 1% |
| RAM (max) | 16 GB+167% | 6 GB |
| Storage options | 256/512GB | 64GB / 128GB |
| Storage type | UFS 4.1 | UFS 2.0 |
Camera
| Spec | REDMI K90 Ultra | Samsung Galaxy A51 |
|---|---|---|
| Main camera | 50 MP+4% | 48 MP |
| Main aperture | f/1.7 | f/2.0 |
| Ultra-wide | 8 MP | 12 MP+50% |
| Max video | 8K@30fps | 4K@30fps |
| Front camera | 20 MP | 32 MP+60% |
| OIS | Yes | No |
Battery
| Spec | REDMI K90 Ultra | Samsung Galaxy A51 |
|---|---|---|
| Capacity | 8,550 mAh+114% | 4,000 mAh |
| Wired charging | 100 W+567% | 15 W |
Design
| Spec | REDMI K90 Ultra | Samsung Galaxy A51 |
|---|---|---|
| Weight | 227 g | 172 g+24% |
| Thickness | 8.2 mm | 7.9 mm+4% |
| IP rating | IP68/IP69 | — |
| Frame material | Aluminum | Plastic |
Connectivity
| Spec | REDMI K90 Ultra | Samsung Galaxy A51 |
|---|---|---|
| 5G | Yes | No |
| Wi-Fi | Wi-Fi 7 | Wi-Fi 5 |
| Bluetooth | 5.4 | 5.0 |
| NFC | Yes | Yes |
| USB | USB-C | USB-C 2.0 |
| eSIM | No | No |
Software
| Spec | REDMI K90 Ultra | Samsung Galaxy A51 |
|---|---|---|
| OS at launch | Android 16 (HyperOS 3) | Android 10 (One UI 2) |
| OS update pledge | — | 3 years |
Audio
| Spec | REDMI K90 Ultra | Samsung Galaxy A51 |
|---|---|---|
| Stereo speakers | Yes | No |
| 3.5mm jack | No | Yes |