Redmi K90 Ultra vs Samsung Galaxy A6 2018
The Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite, while the Samsung Galaxy A6 2018 (2018) runs on the Samsung Exynos 7870; launch prices were $420 and $400. By overall MobileRank rating, the Redmi K90 Ultra leads — 73/100 vs 21/100 (a 52-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 3000); the main camera is 50 MP vs 16 MP; the Redmi K90 Ultra is faster in AnTuTu (3,119,308 vs 192,269); the Samsung Galaxy A6 2018 is noticeably lighter (162g vs 227g).
Redmi K90 Ultra
Samsung Galaxy A6 2018
- Higher AnTuTu: 3119308 vs 192269
- Better Geekbench Single: 3041 vs 172
- Better Geekbench Multi: 9494 vs 492
- Bigger battery: 8550 vs 3000 mAh
- Faster charging: 100W vs 15W
- Better main camera: 50MP vs 16MP
- Higher refresh rate: 165Hz vs 60Hz
- Higher performance (92/100 vs 11/100)
- Better camera (37/100 vs 14/100)
- Longer battery life (78/100 vs 15/100)
- Better display (94/100 vs 48/100)
- Lighter: 162g vs 227g
- Cheaper at launch: $400 vs $420
- Better portability (83/100 vs 40/100)
Comparing the Redmi K90 Ultra vs the Samsung Galaxy A6 2018, the Redmi K90 Ultra scores 52 points higher (73/100 vs 21/100). In the "performance" category, the Redmi K90 Ultra leads (92/100 vs 11/100). In the "camera" category, the Redmi K90 Ultra leads (37/100 vs 14/100). In the "battery" category, the Redmi K90 Ultra leads (78/100 vs 15/100). Value score: Redmi K90 Ultra — 82/100, Samsung Galaxy A6 2018 — 0/100; it is biased by price level, so it should not be compared directly between devices at different prices. In the "performance" category, the Redmi K90 Ultra significantly outperforms the Samsung Galaxy A6 2018 (92/100 vs 11/100). In the "display" category, the Redmi K90 Ultra significantly outperforms the Samsung Galaxy A6 2018 (94/100 vs 48/100). In the "camera" category, the Redmi K90 Ultra notably outperforms the Samsung Galaxy A6 2018 (37/100 vs 14/100). In the "battery" category, the Redmi K90 Ultra significantly outperforms the Samsung Galaxy A6 2018 (78/100 vs 15/100). In the "portability" category, the Samsung Galaxy A6 2018 significantly outperforms the Redmi K90 Ultra (83/100 vs 40/100).
| Specification | Redmi K90 Ultra | Samsung Galaxy A6 2018 | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | Samsung Exynos 7870 | |
| AnTuTu | 3119308 | 192269 | |
| Geekbench Single | 3041 | 172 | |
| Geekbench Multi | 9494 | 492 | |
| Display | 6.8" AMOLED | 5.6" Super AMOLED | |
| Resolution | 1280x2772 | 1480x720 | |
| Refresh rate | 165 Hz | 60 Hz | |
| Battery | 8550 mAh | 3000 mAh | |
| Charging | 100W | 15W | |
| Main camera | 50 MP | 16 MP | |
| Ultrawide | 8 MP | 0 MP | |
| Front camera | 20 MP | 16 MP | |
| RAM | 12GB / 16GB | 3GB / 4GB | |
| Storage | 256GB / 512GB | 32GB / 64GB | |
| OS | Android 16 | Android 8.0 | |
| Brightness (peak) | 3500 nits | — | |
| NFC | yes | yes | |
| Protection | IP68/IP69 | — | |
| Dimensions | 162.9×77.9×8.2 mm | 160.2×75.7×7.9 mm | |
| Weight | 227 g | 162 g | |
| Launch price | $420 | $400 |
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Samsung Galaxy A6 2018
- Main: 16MP f/1.7
- Front: 16MP
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Samsung Galaxy A6 2018
- 5.6" Super AMOLED
- Resolution: 1480x720
- Refresh rate: 60 Hz
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
Samsung Galaxy A6 2018
- 3000 mAh
- Wired: 15W
- Wireless charging: no data
We compared Redmi K90 Ultra and Samsung Galaxy A6 2018, covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads Samsung Galaxy A6 2018 by 1522.4% in our overall performance rating.
Launch price difference: $20. Samsung Galaxy A6 2018 was $20 cheaper at launch.
performance
In the "performance" category, the Redmi K90 Ultra significantly outperforms the Samsung Galaxy A6 2018 (92/100 vs 11/100).
display
In the "display" category, the Redmi K90 Ultra significantly outperforms the Samsung Galaxy A6 2018 (94/100 vs 48/100).
camera
In the "camera" category, the Redmi K90 Ultra notably outperforms the Samsung Galaxy A6 2018 (37/100 vs 14/100).
battery
In the "battery" category, the Redmi K90 Ultra significantly outperforms the Samsung Galaxy A6 2018 (78/100 vs 15/100).
portability
In the "portability" category, the Samsung Galaxy A6 2018 significantly outperforms the Redmi K90 Ultra (83/100 vs 40/100).
Which is better: the Redmi K90 Ultra or the Samsung Galaxy A6 2018?
The Redmi K90 Ultra significantly outperforms the Samsung Galaxy A6 2018 by 52 points (73/100 vs 21/100).
What is the rating of the Redmi K90 Ultra and the Samsung Galaxy A6 2018?
The Redmi K90 Ultra has a MobileRank rating of 73/100, the Samsung Galaxy A6 2018 — 21/100.
Which has the better camera: the Redmi K90 Ultra or the Samsung Galaxy A6 2018?
The Redmi K90 Ultra leads on camera score (37/100 vs 14/100).
Which is more powerful: the Redmi K90 Ultra or the Samsung Galaxy A6 2018?
The Redmi K90 Ultra leads on performance (92/100 vs 11/100).
Should you choose the Redmi K90 Ultra over the Samsung Galaxy A6 2018?
The Redmi K90 Ultra is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers. The Samsung Galaxy A6 2018 is a better fit for everyday use.