Redmi K90 Ultra vs Samsung Galaxy A03 Core
The Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite, while the Samsung Galaxy A03 Core (2022) runs on the Unisoc SC9863A; launch prices were $420 and $100. By overall MobileRank rating, the Redmi K90 Ultra leads — 73/100 vs 24/100 (a 49-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 5000); the main camera is 50 MP vs 8 MP; the Redmi K90 Ultra is faster in AnTuTu (3,119,308 vs 153,667); the Redmi K90 Ultra has NFC for contactless payments, the Samsung Galaxy A03 Core doesn't; the Samsung Galaxy A03 Core is noticeably lighter (196g vs 227g).
Redmi K90 Ultra
Samsung Galaxy A03 Core
- Higher AnTuTu: 3119308 vs 153667
- Better Geekbench Single: 3041 vs 205
- Better Geekbench Multi: 9494 vs 846
- Bigger battery: 8550 vs 5000 mAh
- Better main camera: 50MP vs 8MP
- Higher refresh rate: 165Hz vs 60Hz
- Higher performance (92/100 vs 9/100)
- Better camera (37/100 vs 10/100)
- Longer battery life (78/100 vs 66/100)
- Better display (94/100 vs 32/100)
- Better value for money (82/100 vs 32/100)
- Lighter: 196g vs 227g
- Cheaper at launch: $100 vs $420
- Better portability (50/100 vs 40/100)
Comparing the Redmi K90 Ultra vs the Samsung Galaxy A03 Core, the Redmi K90 Ultra scores 49 points higher (73/100 vs 24/100). In the "performance" category, the Redmi K90 Ultra leads (92/100 vs 9/100). In the "camera" category, the Redmi K90 Ultra leads (37/100 vs 10/100). In the "battery" category, the Redmi K90 Ultra leads (78/100 vs 66/100). In the "value for money" category, the Redmi K90 Ultra leads (82/100 vs 32/100). In the "performance" category, the Redmi K90 Ultra significantly outperforms the Samsung Galaxy A03 Core (92/100 vs 9/100). In the "display" category, the Redmi K90 Ultra significantly outperforms the Samsung Galaxy A03 Core (94/100 vs 32/100). In the "camera" category, the Redmi K90 Ultra notably outperforms the Samsung Galaxy A03 Core (37/100 vs 10/100). In the "battery" category, the Redmi K90 Ultra is a bit better (78/100 vs 66/100). In the "portability" category, the Samsung Galaxy A03 Core is a bit better (50/100 vs 40/100). In the "value for money" category, the Redmi K90 Ultra significantly outperforms the Samsung Galaxy A03 Core (82/100 vs 32/100).
| Specification | Redmi K90 Ultra | Samsung Galaxy A03 Core | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | Unisoc SC9863A | |
| AnTuTu | 3119308 | 153667 | |
| Geekbench Single | 3041 | 205 | |
| Geekbench Multi | 9494 | 846 | |
| Display | 6.8" AMOLED | 6.5" IPS LCD | |
| Resolution | 1280x2772 | — | |
| Refresh rate | 165 Hz | 60 Hz | |
| Battery | 8550 mAh | 5000 mAh | |
| Charging | 100W | — | |
| Main camera | 50 MP | 8 MP | |
| Ultrawide | 8 MP | 0 MP | |
| Front camera | 20 MP | 5 MP | |
| RAM | 12GB / 16GB | 2GB | |
| Storage | 256GB / 512GB | 32GB | |
| OS | Android 16 | — | |
| 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 | |
| Launch price | $420 | $100 |
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Samsung Galaxy A03 Core
- Main: 8MP
- Front: 5MP
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Samsung Galaxy A03 Core
- 6.5" IPS LCD
- Refresh rate: 60 Hz
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
Samsung Galaxy A03 Core
- 5000 mAh
- Wireless charging: no data
We compared Redmi K90 Ultra and Samsung Galaxy A03 Core, covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads Samsung Galaxy A03 Core by 1929.9% in our overall performance rating.
Launch price difference: $320. Samsung Galaxy A03 Core was $320 cheaper at launch.
performance
In the "performance" category, the Redmi K90 Ultra significantly outperforms the Samsung Galaxy A03 Core (92/100 vs 9/100).
display
In the "display" category, the Redmi K90 Ultra significantly outperforms the Samsung Galaxy A03 Core (94/100 vs 32/100).
camera
In the "camera" category, the Redmi K90 Ultra notably outperforms the Samsung Galaxy A03 Core (37/100 vs 10/100).
battery
In the "battery" category, the Redmi K90 Ultra is a bit better (78/100 vs 66/100).
portability
In the "portability" category, the Samsung Galaxy A03 Core is a bit better (50/100 vs 40/100).
value for money
In the "value for money" category, the Redmi K90 Ultra significantly outperforms the Samsung Galaxy A03 Core (82/100 vs 32/100).
Which is better: the Redmi K90 Ultra or the Samsung Galaxy A03 Core?
The Redmi K90 Ultra significantly outperforms the Samsung Galaxy A03 Core by 49 points (73/100 vs 24/100).
What is the rating of the Redmi K90 Ultra and the Samsung Galaxy A03 Core?
The Redmi K90 Ultra has a MobileRank rating of 73/100, the Samsung Galaxy A03 Core — 24/100.
Which has the better camera: the Redmi K90 Ultra or the Samsung Galaxy A03 Core?
The Redmi K90 Ultra leads on camera score (37/100 vs 10/100).
Which is more powerful: the Redmi K90 Ultra or the Samsung Galaxy A03 Core?
The Redmi K90 Ultra leads on performance (92/100 vs 9/100).
Should you choose the Redmi K90 Ultra over the Samsung Galaxy A03 Core?
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 A03 Core is a better fit for everyday use.