Redmi K90 vs Samsung Galaxy A18 4G
The Redmi K90 (2025) runs on the Qualcomm Snapdragon 8 Elite, while the Samsung Galaxy A18 4G (2026) runs on the Exynos 1610; launch prices were $401 and $325. By overall MobileRank rating, the Redmi K90 leads — 76/100 vs 46/100 (a 30-point difference). Key differences: the Redmi K90 has the bigger battery (7100 mAh vs 5000).
Profile comparison
Category scores
Redmi K90
Samsung Galaxy A18 4G
What makes Redmi K90 better?
- Bigger battery: 7100 vs 5000 mAh
- Faster charging: 100W vs 25W
- Higher refresh rate: 120Hz vs 90Hz
- Better camera (58/100 vs 33/100)
- Longer battery life (72/100 vs 44/100)
- Better display (82/100 vs 67/100)
What makes Samsung Galaxy A18 4G better?
- Lighter: 196g vs 206g
- Cheaper at launch: $325 vs $401
- Better portability (65/100 vs 55/100)
Comparison verdict
Comparing the Redmi K90 vs the Samsung Galaxy A18 4G, the Redmi K90 scores 30 points higher (76/100 vs 46/100). In the "camera" category, the Redmi K90 leads (58/100 vs 33/100). In the "battery" category, the Redmi K90 leads (72/100 vs 44/100). Value score: Redmi K90 — 80/100, Samsung Galaxy A18 4G — 28/100; 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 "display" category, the Redmi K90 notably outperforms the Samsung Galaxy A18 4G (82/100 vs 67/100). In the "camera" category, the Redmi K90 notably outperforms the Samsung Galaxy A18 4G (58/100 vs 33/100). In the "battery" category, the Redmi K90 notably outperforms the Samsung Galaxy A18 4G (72/100 vs 44/100). In the "portability" category, the Samsung Galaxy A18 4G is a bit better (65/100 vs 55/100).
Specs comparison
| Specification | Redmi K90 | Samsung Galaxy A18 4G | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | Exynos 1610 | |
| AnTuTu | 3077585 | — | |
| Geekbench Single | 3013 | — | |
| Geekbench Multi | 9287 | — | |
| Display | 6.6" AMOLED | 6.7" Super AMOLED | |
| Resolution | 2510x1156 | 1080x2340 | |
| Refresh rate | 120 Hz | 90 Hz | |
| Battery | 7100 mAh | 5000 mAh | |
| Charging | 100W | 25W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 8 MP | 5 MP | |
| Telephoto | 50 MP | 0 MP | |
| Front camera | 20 MP | 13 MP | |
| RAM | 12GB / 16GB | 4GB | |
| Storage | 256GB / 512GB | 64GB / 128GB / 256GB | |
| OS | Android 16 | Android 17 | |
| Brightness (peak) | 3500 nits | — | |
| NFC | yes | yes | |
| Protection | IP68 | IP64 | |
| Dimensions | 157.5×75.3×8.0 mm | 164.4×77.9×7.7 mm | |
| Weight | 206 g | 196 g | |
| Launch price | $401 | $325 |
Camera comparison
Redmi K90
- Main: 50MP f/1.9
- Ultrawide: 8MP
- Telephoto: 50MP
- Front: 20MP
Samsung Galaxy A18 4G
- Main: 50MP f/1.8
- Ultrawide: 5MP
- Front: 13MP
Display comparison
Redmi K90
- 6.6" AMOLED
- Resolution: 2510x1156
- Refresh rate: 120 Hz
Samsung Galaxy A18 4G
- 6.7" Super AMOLED
- Resolution: 1080x2340
- Refresh rate: 90 Hz
Battery and charging
Redmi K90
- 7100 mAh
- Wired: 100W
- No wireless charging
Samsung Galaxy A18 4G
- 5000 mAh
- Wired: 25W
- No wireless charging
Benchmarks
Launch prices and where to check today's
Launch price difference: $76. Samsung Galaxy A18 4G was $76 cheaper at launch.
Detailed category analysis
display
In the "display" category, the Redmi K90 notably outperforms the Samsung Galaxy A18 4G (82/100 vs 67/100).
camera
In the "camera" category, the Redmi K90 notably outperforms the Samsung Galaxy A18 4G (58/100 vs 33/100).
battery
In the "battery" category, the Redmi K90 notably outperforms the Samsung Galaxy A18 4G (72/100 vs 44/100).
portability
In the "portability" category, the Samsung Galaxy A18 4G is a bit better (65/100 vs 55/100).
Frequently asked questions
Which is better: the Redmi K90 or the Samsung Galaxy A18 4G?
The Redmi K90 significantly outperforms the Samsung Galaxy A18 4G by 30 points (76/100 vs 46/100).
What is the rating of the Redmi K90 and the Samsung Galaxy A18 4G?
The Redmi K90 has a MobileRank rating of 76/100, the Samsung Galaxy A18 4G — 46/100.
Which has the better camera: the Redmi K90 or the Samsung Galaxy A18 4G?
The Redmi K90 leads on camera score (58/100 vs 33/100).
Should you choose the Redmi K90 over the Samsung Galaxy A18 4G?
The Redmi K90 is a better fit for gamers and power users, budget-conscious buyers.