REDMI K90 Ultra vs Samsung Galaxy Z Flip 8
64.4Performance77.6
78.7Display59.2
43.4Camera42.1
83.2Battery59.7
86.7Features94.7
9 spec wins — REDMI K90 Ultra4 spec wins — Samsung Galaxy Z Flip 8
InnoReviews verdict
REDMI K90 Ultra wins this phone face-off, 69.1 to 64.9, pulling ahead mainly in battery (+24) and display (+20). Samsung Galaxy Z Flip 8 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 59
- Stronger battery score: 83 vs 60
- 300% higher Wired charging: 100 W vs 25 W
- 100% higher Front camera: 20 MP vs 10 MP
- 99% higher capacity: 8,550 mAh vs 4,300 mAh
Reasons to pick the Samsung Galaxy Z Flip 8
- Stronger performance score: 78 vs 64
- Stronger features score: 95 vs 87
- 50% higher ultra-wide: 12 MP vs 8 MP
- 21% lower weight: 180 g vs 227 g
- Has eSIM — the other doesn't
Display
| Spec | REDMI K90 Ultra | Samsung Galaxy Z Flip 8 |
|---|---|---|
| Screen size | 6.83 ″ | 6.9 ″+1% |
| Panel type | AMOLED | Foldable Dynamic LTPO AMOLED 2X |
| Resolution | 1280x2772 | 1080x2520 |
| Pixel density | 447 ppi+12% | 400 ppi |
| Refresh rate | 165 Hz+38% | 120 Hz |
| Peak brightness | 3,500 nits+17% | 3,000 nits |
| Screen-to-body | 90.3 %+4% | 87.1 % |
Performance
| Spec | REDMI K90 Ultra | Samsung Galaxy Z Flip 8 |
|---|---|---|
| Chipset | Snapdragon 8 Elite | Samsung Exynos 2600 (Snapdragon 8 Elite Gen 5 for Galaxy in the US, Canada and China) |
| AnTuTu | — | 2,477,554 |
| Geekbench 6 (single) | — | 2,977Top 14% |
| Geekbench 6 (multi) | — | 10,466Top 6% |
| Wild Life Extreme stability | — | 38 %Bottom 3% |
| RAM (max) | 16 GB+33% | 12 GB |
| Storage options | 256/512GB | 256GB/512GB |
| Storage type | UFS 4.1 | UFS 4.0 |
Camera
| Spec | REDMI K90 Ultra | Samsung Galaxy Z Flip 8 |
|---|---|---|
| Main camera | 50 MP | 50 MP |
| Main aperture | f/1.7 | f/1.8 |
| Ultra-wide | 8 MP | 12 MP+50% |
| Max video | 8K@30fps | 4K@60fps |
| Front camera | 20 MP+100% | 10 MP |
| OIS | Yes | Yes |
Battery
| Spec | REDMI K90 Ultra | Samsung Galaxy Z Flip 8 |
|---|---|---|
| Capacity | 8,550 mAh+99% | 4,300 mAh |
| Wired charging | 100 W+300% | 25 W |
| Wireless charging | — | 15 W |
| Active use endurance | — | 14.2 h |
Design
| Spec | REDMI K90 Ultra | Samsung Galaxy Z Flip 8 |
|---|---|---|
| Weight | 227 g | 180 g+21% |
| Thickness | 8.2 mm+37% | 13.1 mm |
| IP rating | IP68/IP69 | IP48 |
| Frame material | Aluminum | Armor Aluminum |
Connectivity
| Spec | REDMI K90 Ultra | Samsung Galaxy Z Flip 8 |
|---|---|---|
| 5G | Yes | Yes |
| Wi-Fi | Wi-Fi 7 | Wi-Fi 7 |
| Bluetooth | 5.4 | 5.4 |
| NFC | Yes | Yes |
| USB | USB-C | USB-C 3.2 |
| eSIM | No | Yes |
Software
| Spec | REDMI K90 Ultra | Samsung Galaxy Z Flip 8 |
|---|---|---|
| OS at launch | Android 16 (HyperOS 3) | Android 17 (One UI 9) |
| OS update pledge | — | 7 years |
Audio
| Spec | REDMI K90 Ultra | Samsung Galaxy Z Flip 8 |
|---|---|---|
| Stereo speakers | Yes | Yes |
| 3.5mm jack | No | No |
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