REDMI K90 Ultra vs Samsung Galaxy Z Fold 6
64.4Performance60.9
78.7Display58.6
43.4Camera46.9
83.2Battery47.9
86.7Features94.7
9 spec wins — REDMI K90 Ultra4 spec wins — Samsung Galaxy Z Fold 6
InnoReviews verdict
REDMI K90 Ultra wins this phone face-off, 69.1 to 58.4, pulling ahead mainly in battery (+35) and display (+20). Samsung Galaxy Z Fold 6 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 61
- Stronger display score: 79 vs 59
- Stronger battery score: 83 vs 48
- 300% higher Wired charging: 100 W vs 25 W
- 100% higher Front camera: 20 MP vs 10 MP
Reasons to pick the Samsung Galaxy Z Fold 6
- Stronger camera score: 47 vs 43
- Stronger features score: 95 vs 87
- 50% higher ultra-wide: 12 MP vs 8 MP
- 11% higher Screen size: 7.6 ″ vs 6.83 ″
- Has eSIM — the other doesn't
Display
| Spec | REDMI K90 Ultra | Samsung Galaxy Z Fold 6 |
|---|---|---|
| Screen size | 6.83 ″ | 7.6 ″+11% |
| Panel type | AMOLED | Foldable Dynamic LTPO AMOLED 2X |
| Resolution | 1280x2772 | 1856x2160 |
| Pixel density | 447 ppi+20% | 374 ppi |
| Refresh rate | 165 Hz+38% | 120 Hz |
| Peak brightness | 3,500 nits+35% | 2,600 nits |
| Screen-to-body | 90.3 % | 90.5 % |
Performance
| Spec | REDMI K90 Ultra | Samsung Galaxy Z Fold 6 |
|---|---|---|
| Chipset | Snapdragon 8 Elite | Snapdragon 8 Gen 3 for Galaxy |
| AnTuTu | — | 1,820,000 |
| Geekbench 6 (single) | — | 2,270Top 24% |
| Geekbench 6 (multi) | — | 7,000Top 23% |
| RAM (max) | 16 GB+33% | 12 GB |
| Storage options | 256/512GB | 256/512GB/1TB |
| Storage type | UFS 4.1 | UFS 4.0 |
Camera
| Spec | REDMI K90 Ultra | Samsung Galaxy Z Fold 6 |
|---|---|---|
| Main camera | 50 MP | 50 MP |
| Main aperture | f/1.7 | f/1.8 |
| Ultra-wide | 8 MP | 12 MP+50% |
| Telephoto | — | 10 MP |
| Optical zoom | — | 3 x |
| Max video | 8K@30fps | 8K@30fps |
| Front camera | 20 MP+100% | 10 MP |
| OIS | Yes | Yes |
Battery
| Spec | REDMI K90 Ultra | Samsung Galaxy Z Fold 6 |
|---|---|---|
| Capacity | 8,550 mAh+94% | 4,400 mAh |
| Wired charging | 100 W+300% | 25 W |
| Wireless charging | — | 15 W |
| Active use endurance | — | 10 h |
Design
| Spec | REDMI K90 Ultra | Samsung Galaxy Z Fold 6 |
|---|---|---|
| Weight | 227 g+5% | 239 g |
| Thickness | 8.2 mm+32% | 12.1 mm |
| IP rating | IP68/IP69 | IP48 |
| Frame material | Aluminum | Armor Aluminum |
Connectivity
| Spec | REDMI K90 Ultra | Samsung Galaxy Z Fold 6 |
|---|---|---|
| 5G | Yes | Yes |
| Wi-Fi | Wi-Fi 7 | Wi-Fi 7 |
| Bluetooth | 5.4 | 5.3 |
| NFC | Yes | Yes |
| USB | USB-C | USB-C 3.2 |
| eSIM | No | Yes |
Software
| Spec | REDMI K90 Ultra | Samsung Galaxy Z Fold 6 |
|---|---|---|
| OS at launch | Android 16 (HyperOS 3) | Android 14 (One UI 6.1.1) |
| OS update pledge | — | 7 years |
Audio
| Spec | REDMI K90 Ultra | Samsung Galaxy Z Fold 6 |
|---|---|---|
| Stereo speakers | Yes | Yes |
| 3.5mm jack | No | No |
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