Redmi K90 Ultra vs Samsung Galaxy A03
Comparing the Redmi K90 Ultra (2026) and the Samsung Galaxy A03 (2022) on specs and benchmarks. By overall MobileRank rating, the Redmi K90 Ultra leads — 61/100 vs 16/100 (a 45-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 5000); the main camera is 50 MP vs 48 MP; the Redmi K90 Ultra has NFC for contactless payments, the Samsung Galaxy A03 doesn't; the Samsung Galaxy A03 is noticeably lighter (196g vs 227g).
Redmi K90 Ultra
Samsung Galaxy A03
- Bigger battery: 8550 vs 5000 mAh
- Better main camera: 50MP vs 48MP
- Higher performance (65/100 vs 0/100)
- Better camera (32/100 vs 23/100)
- Longer battery life (77/100 vs 36/100)
- Better display (100/100 vs 0/100)
- Better value for money (81/100 vs 55/100)
- Lighter: 196g vs 227g
- Better design/ergonomics (55/100 vs 16/100)
Comparing the Redmi K90 Ultra vs the Samsung Galaxy A03, the Redmi K90 Ultra scores 45 points higher (61/100 vs 16/100). In the "performance" category, the Redmi K90 Ultra leads (65/100 vs 0/100). In the "battery" category, the Redmi K90 Ultra leads (77/100 vs 36/100). In the "value for money" category, the Redmi K90 Ultra leads (81/100 vs 55/100). In the "performance" category, the Redmi K90 Ultra significantly outperforms the Samsung Galaxy A03 (65/100 vs 0/100). In the "display" category, the Redmi K90 Ultra significantly outperforms the Samsung Galaxy A03 (100/100 vs 0/100). In the "camera" category, the Redmi K90 Ultra is a bit better (32/100 vs 23/100). In the "battery" category, the Redmi K90 Ultra significantly outperforms the Samsung Galaxy A03 (77/100 vs 36/100). In the "design" category, the Samsung Galaxy A03 significantly outperforms the Redmi K90 Ultra (55/100 vs 16/100). In the "value for money" category, the Redmi K90 Ultra notably outperforms the Samsung Galaxy A03 (81/100 vs 55/100).
| Specification | Redmi K90 Ultra | Samsung Galaxy A03 | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | — | |
| AnTuTu | 2760000 | — | |
| Geekbench Single | 3050 | — | |
| Geekbench Multi | 9300 | — | |
| Display | 6.8" AMOLED | 6.5" PLS TFT | |
| Resolution | 1280x2772 | 720x1600 | |
| Refresh rate | 165 Hz | — | |
| Battery | 8550 mAh | 5000 mAh | |
| Charging | 100W | — | |
| Main camera | 50 MP | 48 MP | |
| Ultrawide | 8 MP | 0 MP | |
| Front camera | 20 MP | 5 MP | |
| RAM | 12GB / 16GB | 3GB / 4GB | |
| Storage | 256GB / 512GB | 32GB / 64GB / 128GB | |
| OS | Android 16 | Android 11 | |
| Brightness (peak) | 3500 nits | — | |
| NFC | yes | no | |
| Protection | IP68/IP69 | — | |
| Dimensions | 162.9×77.9×8.2 mm | 164.2×75.9×9.1 mm | |
| Weight | 227 g | 196 g | |
| Price | $420 | — |
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Samsung Galaxy A03
- Main: 48MP f/f/1.8
- Front: 5MP
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Samsung Galaxy A03
- 6.5" PLS TFT
- Resolution: 720x1600
- Refresh rate: —
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
Samsung Galaxy A03
- 5000 mAh
- No wireless charging
Samsung Galaxy A03
Price unknownperformance
In the "performance" category, the Redmi K90 Ultra significantly outperforms the Samsung Galaxy A03 (65/100 vs 0/100).
display
In the "display" category, the Redmi K90 Ultra significantly outperforms the Samsung Galaxy A03 (100/100 vs 0/100).
camera
In the "camera" category, the Redmi K90 Ultra is a bit better (32/100 vs 23/100).
battery
In the "battery" category, the Redmi K90 Ultra significantly outperforms the Samsung Galaxy A03 (77/100 vs 36/100).
design
In the "design" category, the Samsung Galaxy A03 significantly outperforms the Redmi K90 Ultra (55/100 vs 16/100).
value for money
In the "value for money" category, the Redmi K90 Ultra notably outperforms the Samsung Galaxy A03 (81/100 vs 55/100).
Which is better: the Redmi K90 Ultra or the Samsung Galaxy A03?
The Redmi K90 Ultra significantly outperforms the Samsung Galaxy A03 by 45 points (61/100 vs 16/100).
What is the rating of the Redmi K90 Ultra and the Samsung Galaxy A03?
The Redmi K90 Ultra has a MobileRank rating of 61/100, the Samsung Galaxy A03 — 16/100.
Which has the better camera: the Redmi K90 Ultra or the Samsung Galaxy A03?
The Redmi K90 Ultra leads on camera score (32/100 vs 23/100).
Which is more powerful: the Redmi K90 Ultra or the Samsung Galaxy A03?
The Redmi K90 Ultra leads on performance (65/100 vs 0/100).
Should you choose the Redmi K90 Ultra over the Samsung Galaxy A03?
The Redmi K90 Ultra is a better fit for active users, those who care about battery life, budget-conscious buyers. The Samsung Galaxy A03 is a better fit for everyday use.