Fairphone 6 vs Redmi K90 Ultra
The Fairphone 6 (2025) runs on the Qualcomm Snapdragon 7s Gen 3, while the Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite; estimated prices are $565 and $420. By overall MobileRank rating, the Redmi K90 Ultra leads — 75/100 vs 53/100 (a 22-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 4415); the Redmi K90 Ultra is faster in AnTuTu (3,119,308 vs 1,027,025); the Fairphone 6 is noticeably lighter (193g vs 227g).
Fairphone 6
Redmi K90 Ultra
- Lighter: 193g vs 227g
- Better camera (42/100 vs 37/100)
- Better portability (47/100 vs 40/100)
- Higher AnTuTu: 3119308 vs 1027025
- Better Geekbench Single: 3041 vs 1162
- Better Geekbench Multi: 9494 vs 3315
- Bigger battery: 8550 vs 4415 mAh
- Faster charging: 100W vs 30W
- Higher refresh rate: 165Hz vs 120Hz
- Cheaper: $420 vs $565
- Higher performance (92/100 vs 60/100)
- Longer battery life (92/100 vs 33/100)
- Better display (94/100 vs 82/100)
- Better value for money (86/100 vs 24/100)
Comparing the Fairphone 6 vs the Redmi K90 Ultra, the Redmi K90 Ultra scores 22 points higher (75/100 vs 53/100). In the "performance" category, the Redmi K90 Ultra leads (92/100 vs 60/100). In the "battery" category, the Redmi K90 Ultra leads (92/100 vs 33/100). In the "value for money" category, the Redmi K90 Ultra leads (86/100 vs 24/100). In the "performance" category, the Redmi K90 Ultra significantly outperforms the Fairphone 6 (92/100 vs 60/100). In the "display" category, the Redmi K90 Ultra is a bit better (94/100 vs 82/100). In the "camera" category, the Fairphone 6 is a bit better (42/100 vs 37/100). In the "battery" category, the Redmi K90 Ultra significantly outperforms the Fairphone 6 (92/100 vs 33/100). In the "portability" category, the Fairphone 6 is a bit better (47/100 vs 40/100). In the "value for money" category, the Redmi K90 Ultra significantly outperforms the Fairphone 6 (86/100 vs 24/100).
| Specification | Fairphone 6 | Redmi K90 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 7s Gen 3 | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 1027025 | 3119308 | |
| Geekbench Single | 1162 | 3041 | |
| Geekbench Multi | 3315 | 9494 | |
| Display | 6.3" LTPO OLED | 6.8" AMOLED | |
| Resolution | 1116x2484 | 1280x2772 | |
| Refresh rate | 120 Hz | 165 Hz | |
| Battery | 4415 mAh | 8550 mAh | |
| Charging | 30W | 100W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 13 MP | 8 MP | |
| Front camera | 32 MP | 20 MP | |
| RAM | 8GB | 12GB / 16GB | |
| Storage | 256GB | 256GB / 512GB | |
| OS | Android 15, up to 8 major Android upgrades | Android 16 | |
| Brightness (peak) | 1400 nits | 3500 nits | |
| NFC | yes | yes | |
| Protection | IP55 | IP68/IP69 | |
| Dimensions | 156.5×73.3×9.6 mm | 162.9×77.9×8.2 mm | |
| Weight | 193 g | 227 g | |
| Price | $565 | $420 |
Fairphone 6
- Main: 50MP f/f/1.6
- Ultrawide: 13MP
- Front: 32MP
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Fairphone 6
- 6.3" LTPO OLED
- Resolution: 1116x2484
- Refresh rate: 120 Hz
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Fairphone 6
- 4415 mAh
- Wired: 30W
- No wireless charging
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- Wireless charging: no data
We compared Fairphone 6 and Redmi K90 Ultra, covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads Fairphone 6 by 67.1% in our overall performance rating.
Price difference: $145. Redmi K90 Ultra is cheaper by $145.
performance
In the "performance" category, the Redmi K90 Ultra significantly outperforms the Fairphone 6 (92/100 vs 60/100).
display
In the "display" category, the Redmi K90 Ultra is a bit better (94/100 vs 82/100).
camera
In the "camera" category, the Fairphone 6 is a bit better (42/100 vs 37/100).
battery
In the "battery" category, the Redmi K90 Ultra significantly outperforms the Fairphone 6 (92/100 vs 33/100).
portability
In the "portability" category, the Fairphone 6 is a bit better (47/100 vs 40/100).
value for money
In the "value for money" category, the Redmi K90 Ultra significantly outperforms the Fairphone 6 (86/100 vs 24/100).
Which is better: the Fairphone 6 or the Redmi K90 Ultra?
The Redmi K90 Ultra significantly outperforms the Fairphone 6 by 22 points (75/100 vs 53/100).
What is the rating of the Fairphone 6 and the Redmi K90 Ultra?
The Fairphone 6 has a MobileRank rating of 53/100, the Redmi K90 Ultra — 75/100.
Which has the better camera: the Fairphone 6 or the Redmi K90 Ultra?
The Fairphone 6 leads on camera score (42/100 vs 37/100).
Which is more powerful: the Fairphone 6 or the Redmi K90 Ultra?
The Redmi K90 Ultra leads on performance (92/100 vs 60/100).
Should you choose the Fairphone 6 over the Redmi K90 Ultra?
The Fairphone 6 is a better fit for active users. The Redmi K90 Ultra is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers.