Redmi K90 vs Samsung Galaxy A57
The Redmi K90 (2025) runs on the Qualcomm Snapdragon 8 Elite, while the Samsung Galaxy A57 (2026) runs on the Samsung Exynos 1680; launch prices were $401 and $350. By overall MobileRank rating, the Redmi K90 leads — 76/100 vs 57/100 (a 19-point difference). Key differences: the Redmi K90 has the bigger battery (7100 mAh vs 5000); the Redmi K90 is faster in AnTuTu (3,077,585 vs 1,359,649); the Samsung Galaxy A57 is noticeably lighter (183g vs 206g).
Profile comparison
Category scores
Redmi K90
Samsung Galaxy A57
What makes Redmi K90 better?
- Higher AnTuTu: 3077585 vs 1359649
- Better Geekbench Single: 3013 vs 1382
- Better Geekbench Multi: 9287 vs 4477
- Bigger battery: 7100 vs 5000 mAh
- Faster charging: 100W vs 25W
- Higher performance (91/100 vs 67/100)
- Better camera (58/100 vs 34/100)
- Longer battery life (72/100 vs 44/100)
- Better display (82/100 vs 79/100)
What makes Samsung Galaxy A57 better?
- Lighter: 183g vs 206g
- Cheaper at launch: $350 vs $401
- Better portability (80/100 vs 55/100)
Comparison verdict
Comparing the Redmi K90 vs the Samsung Galaxy A57, the Redmi K90 scores 19 points higher (76/100 vs 57/100). In the "performance" category, the Redmi K90 leads (91/100 vs 67/100). In the "camera" category, the Redmi K90 leads (58/100 vs 34/100). In the "battery" category, the Redmi K90 leads (72/100 vs 44/100). Value score: Redmi K90 — 80/100, Samsung Galaxy A57 — 48/100; it shows how far a model sits above or below the usual level for its price, and is not part of the overall rating. In the "performance" category, the Redmi K90 notably outperforms the Samsung Galaxy A57 (91/100 vs 67/100). In the "display" category, the Redmi K90 and the Samsung Galaxy A57 are nearly equal (82/100 vs 79/100). In the "camera" category, the Redmi K90 notably outperforms the Samsung Galaxy A57 (58/100 vs 34/100). In the "battery" category, the Redmi K90 notably outperforms the Samsung Galaxy A57 (72/100 vs 44/100). In the "portability" category, the Samsung Galaxy A57 notably outperforms the Redmi K90 (80/100 vs 55/100).
Specs comparison
| Specification | Redmi K90 | Samsung Galaxy A57 | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | Samsung Exynos 1680 | |
| AnTuTu | 3077585 | 1359649 | |
| Geekbench Single | 3013 | 1382 | |
| Geekbench Multi | 9287 | 4477 | |
| Display | 6.6" AMOLED | 6.7" Super AMOLED | |
| Resolution | 2510x1156 | 2340x1080 | |
| Refresh rate | 120 Hz | 120 Hz | |
| Battery | 7100 mAh | 5000 mAh | |
| Charging | 100W | 25W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 8 MP | 8 MP | |
| Telephoto | 50 MP | 0 MP | |
| Front camera | 20 MP | 13 MP | |
| RAM | 12GB / 16GB | 6GB / 8GB | |
| Storage | 256GB / 512GB | 128GB / 256GB | |
| OS | Android 16 | Android 16 | |
| Brightness (peak) | 3500 nits | 1900 nits | |
| NFC | yes | yes | |
| Protection | IP68 | IP68 | |
| Dimensions | 157.5×75.3×8.0 mm | 161.5×76.8×6.9 mm | |
| Weight | 206 g | 183 g | |
| Launch price | $401 | $350 |
Camera comparison
Redmi K90
- Main: 50MP f/1.9
- Ultrawide: 8MP
- Telephoto: 50MP
- Front: 20MP
Samsung Galaxy A57
- Main: 50MP f/1.8
- Ultrawide: 8MP
- Front: 13MP
Display comparison
Redmi K90
- 6.6" AMOLED
- Resolution: 2510x1156
- Refresh rate: 120 Hz
Samsung Galaxy A57
- 6.7" Super AMOLED
- Resolution: 2340x1080
- Refresh rate: 120 Hz
Battery and charging
Redmi K90
- 7100 mAh
- Wired: 100W
- No wireless charging
Samsung Galaxy A57
- 5000 mAh
- Wired: 25W
- No wireless charging
Overall performance score
We compared Redmi K90 and Samsung Galaxy A57, covering their specs and all relevant benchmarks.
Redmi K90 leads Samsung Galaxy A57 by 126.4% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $51. Samsung Galaxy A57 was $51 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Redmi K90 notably outperforms the Samsung Galaxy A57 (91/100 vs 67/100).
display
In the "display" category, the Redmi K90 and the Samsung Galaxy A57 are nearly equal (82/100 vs 79/100).
camera
In the "camera" category, the Redmi K90 notably outperforms the Samsung Galaxy A57 (58/100 vs 34/100).
battery
In the "battery" category, the Redmi K90 notably outperforms the Samsung Galaxy A57 (72/100 vs 44/100).
portability
In the "portability" category, the Samsung Galaxy A57 notably outperforms the Redmi K90 (80/100 vs 55/100).
Frequently asked questions
Which is better: the Redmi K90 or the Samsung Galaxy A57?
The Redmi K90 is noticeably better than the Samsung Galaxy A57 — the overall rating gap is 19 points.
What is the rating of the Redmi K90 and the Samsung Galaxy A57?
The Redmi K90 has a MobileRank rating of 76/100, the Samsung Galaxy A57 — 57/100.
Which has the better camera: the Redmi K90 or the Samsung Galaxy A57?
The Redmi K90 leads on camera score (58/100 vs 34/100).
Which is more powerful: the Redmi K90 or the Samsung Galaxy A57?
The Redmi K90 leads on performance (91/100 vs 67/100).
Should you choose the Redmi K90 over the Samsung Galaxy A57?
The Redmi K90 is a better fit for gamers and power users, budget-conscious buyers. The Samsung Galaxy A57 is a better fit for active users.