Redmi K90 vs Xiaomi Mix Fold 4
The Redmi K90 (2025) runs on the Qualcomm Snapdragon 8 Elite, while the Xiaomi Mix Fold 4 (2024) runs on the Qualcomm Snapdragon 8 Gen 3. By overall MobileRank rating, the Redmi K90 leads — 76/100 vs 73/100 (a 3-point difference). Key differences: the Redmi K90 has the bigger battery (7100 mAh vs 5100); the Redmi K90 is faster in AnTuTu (3,086,235 vs 2,342,433); the Redmi K90 is noticeably lighter (206g vs 226g).
Redmi K90
Xiaomi Mix Fold 4
- Higher AnTuTu: 3086235 vs 2342433
- Better Geekbench Single: 3041 vs 2205
- Better Geekbench Multi: 9494 vs 7192
- Bigger battery: 7100 vs 5100 mAh
- Faster charging: 100W vs 67W
- Lighter: 206g vs 226g
- Higher performance (92/100 vs 83/100)
- Longer battery life (72/100 vs 70/100)
- Better display (82/100 vs 81/100)
- Better portability (59/100 vs 55/100)
Comparing the Redmi K90 vs the Xiaomi Mix Fold 4, the Redmi K90 scores 3 points higher (76/100 vs 73/100). In the "performance" category, the Redmi K90 is a bit better (92/100 vs 83/100). In the "display" category, the Redmi K90 and the Xiaomi Mix Fold 4 are nearly equal (82/100 vs 81/100). In the "camera" category, both devices are on the same level — 58/100. In the "battery" category, the Redmi K90 and the Xiaomi Mix Fold 4 are nearly equal (72/100 vs 70/100). In the "portability" category, the Xiaomi Mix Fold 4 and the Redmi K90 are nearly equal (59/100 vs 55/100).
| Specification | Redmi K90 | Xiaomi Mix Fold 4 | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | Qualcomm Snapdragon 8 Gen 3 | |
| AnTuTu | 3086235 | 2342433 | |
| Geekbench Single | 3041 | 2205 | |
| Geekbench Multi | 9494 | 7192 | |
| Display | 6.6" AMOLED | 8.0" Foldable LTPO AMOLED | |
| Resolution | 2510x1156 | 2224x2488 | |
| Refresh rate | 120 Hz | 120 Hz | |
| Battery | 7100 mAh | 5100 mAh | |
| Charging | 100W | 67W | |
| Wireless charging | 0W | 50W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 8 MP | 12 MP | |
| Telephoto | 50 MP | 50 MP | |
| Front camera | 20 MP | 16 MP | |
| RAM | 12GB / 16GB | 12GB / 16GB | |
| Storage | 256GB / 512GB | 256GB / 512GB / 1TB | |
| OS | Android 16 | Android 14, HyperOS | |
| Brightness (peak) | 3500 nits | 3000 nits | |
| NFC | yes | yes | |
| Protection | IP68 | IPX8 | |
| Dimensions | 157.5×75.3×8.0 mm | 159.4×143.3×4.6 mm | |
| Weight | 206 g | 226 g | |
| Launch price | $401 | — |
Redmi K90
- Main: 50MP f/f/1.9
- Ultrawide: 8MP
- Telephoto: 50MP
- Front: 20MP
Xiaomi Mix Fold 4
- Main: 50MP f/f/1.7
- Ultrawide: 12MP
- Telephoto: 50MP
- Front: 16MP
Redmi K90
- 6.6" AMOLED
- Resolution: 2510x1156
- Refresh rate: 120 Hz
Xiaomi Mix Fold 4
- 8.0" Foldable LTPO AMOLED
- Resolution: 2224x2488
- Refresh rate: 120 Hz
Redmi K90
- 7100 mAh
- Wired: 100W
- No wireless charging
Xiaomi Mix Fold 4
- 5100 mAh
- Wired: 67W
- Wireless: 50W
We compared Redmi K90 and Xiaomi Mix Fold 4, covering their specs and all relevant benchmarks.
Redmi K90 leads Xiaomi Mix Fold 4 by 31.8% in our overall performance rating.
Xiaomi Mix Fold 4
Price unknownperformance
In the "performance" category, the Redmi K90 is a bit better (92/100 vs 83/100).
display
In the "display" category, the Redmi K90 and the Xiaomi Mix Fold 4 are nearly equal (82/100 vs 81/100).
camera
In the "camera" category, both devices are on the same level — 58/100.
battery
In the "battery" category, the Redmi K90 and the Xiaomi Mix Fold 4 are nearly equal (72/100 vs 70/100).
portability
In the "portability" category, the Xiaomi Mix Fold 4 and the Redmi K90 are nearly equal (59/100 vs 55/100).
Which is better: the Redmi K90 or the Xiaomi Mix Fold 4?
The Redmi K90 edges out the Xiaomi Mix Fold 4 by just 3 points — the two devices are very close in overall level.
What is the rating of the Redmi K90 and the Xiaomi Mix Fold 4?
The Redmi K90 has a MobileRank rating of 76/100, the Xiaomi Mix Fold 4 — 73/100.
Which is more powerful: the Redmi K90 or the Xiaomi Mix Fold 4?
The Redmi K90 leads on performance (92/100 vs 83/100).
Should you choose the Redmi K90 over the Xiaomi Mix Fold 4?
The Redmi K90 is a better fit for gamers and power users, budget-conscious buyers. The Xiaomi Mix Fold 4 is a better fit for gamers and power users.