Redmi K90 Ultra vs Sony Xperia XA2
The Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite, while the Sony Xperia XA2 (2018) runs on the Snapdragon 630; launch prices were $420 and $349. 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 3300); the main camera is 50 MP vs 23 MP; the Redmi K90 Ultra is faster in AnTuTu (3,233,695 vs 215,323); the Sony Xperia XA2 is noticeably lighter (171g vs 227g).
Profile comparison
Category scores
Redmi K90 Ultra
Sony Xperia XA2
What makes Redmi K90 Ultra better?
- Higher AnTuTu: 3233695 vs 215323
- Better Geekbench Single: 3013 vs 181
- Better Geekbench Multi: 9287 vs 960
- Bigger battery: 8550 vs 3300 mAh
- Faster charging: 100W vs 18W
- Better main camera: 50MP vs 23MP
- Higher refresh rate: 165Hz vs 60Hz
- Higher performance (92/100 vs 15/100)
- Better camera (37/100 vs 15/100)
- Longer battery life (78/100 vs 12/100)
- Better display (94/100 vs 44/100)
What makes Sony Xperia XA2 better?
- Lighter: 171g vs 227g
- Cheaper at launch: $349 vs $420
- Better portability (60/100 vs 40/100)
Comparison verdict
Comparing the Redmi K90 Ultra vs the Sony Xperia XA2, 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 15/100). In the "camera" category, the Redmi K90 Ultra leads (37/100 vs 15/100). In the "battery" category, the Redmi K90 Ultra leads (78/100 vs 12/100). Value score: Redmi K90 Ultra — 72/100, Sony Xperia XA2 — 0/100; 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 Ultra significantly outperforms the Sony Xperia XA2 (92/100 vs 15/100). In the "display" category, the Redmi K90 Ultra significantly outperforms the Sony Xperia XA2 (94/100 vs 44/100). In the "camera" category, the Redmi K90 Ultra notably outperforms the Sony Xperia XA2 (37/100 vs 15/100). In the "battery" category, the Redmi K90 Ultra significantly outperforms the Sony Xperia XA2 (78/100 vs 12/100). In the "portability" category, the Sony Xperia XA2 notably outperforms the Redmi K90 Ultra (60/100 vs 40/100).
Specs comparison
| Specification | Redmi K90 Ultra | Sony Xperia XA2 | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | Snapdragon 630 | |
| AnTuTu | 3233695 | 215323 | |
| Geekbench Single | 3013 | 181 | |
| Geekbench Multi | 9287 | 960 | |
| Display | 6.8" AMOLED | 5.2" IPS LCD | |
| Resolution | 1280x2772 | 1080x1920 | |
| Refresh rate | 165 Hz | 60 Hz | |
| Battery | 8550 mAh | 3300 mAh | |
| Charging | 100W | 18W | |
| Main camera | 50 MP | 23 MP | |
| Ultrawide | 8 MP | 0 MP | |
| Front camera | 20 MP | 8 MP | |
| RAM | 12GB / 16GB | 3GB | |
| Storage | 256GB / 512GB | 32GB | |
| OS | Android 16 | Android 8.0 | |
| Brightness (peak) | 3500 nits | — | |
| NFC | yes | yes | |
| Protection | IP68/IP69 | — | |
| Dimensions | 162.9×77.9×8.2 mm | 142.0×70.0×9.7 mm | |
| Weight | 227 g | 171 g | |
| Launch price | $420 | $349 |
Camera comparison
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Sony Xperia XA2
- Main: 23MP f/2.0
- Front: 8MP
Display comparison
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Sony Xperia XA2
- 5.2" IPS LCD
- Resolution: 1080x1920
- Refresh rate: 60 Hz
Battery and charging
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
Sony Xperia XA2
- 3300 mAh
- Wired: 18W
- No wireless charging
Overall performance score
We compared Redmi K90 Ultra and Sony Xperia XA2, covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads Sony Xperia XA2 by 1401.8% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $71. Sony Xperia XA2 was $71 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Redmi K90 Ultra significantly outperforms the Sony Xperia XA2 (92/100 vs 15/100).
display
In the "display" category, the Redmi K90 Ultra significantly outperforms the Sony Xperia XA2 (94/100 vs 44/100).
camera
In the "camera" category, the Redmi K90 Ultra notably outperforms the Sony Xperia XA2 (37/100 vs 15/100).
battery
In the "battery" category, the Redmi K90 Ultra significantly outperforms the Sony Xperia XA2 (78/100 vs 12/100).
portability
In the "portability" category, the Sony Xperia XA2 notably outperforms the Redmi K90 Ultra (60/100 vs 40/100).
Frequently asked questions
Which is better: the Redmi K90 Ultra or the Sony Xperia XA2?
The Redmi K90 Ultra significantly outperforms the Sony Xperia XA2 by 52 points (73/100 vs 21/100).
What is the rating of the Redmi K90 Ultra and the Sony Xperia XA2?
The Redmi K90 Ultra has a MobileRank rating of 73/100, the Sony Xperia XA2 — 21/100.
Which has the better camera: the Redmi K90 Ultra or the Sony Xperia XA2?
The Redmi K90 Ultra leads on camera score (37/100 vs 15/100).
Which is more powerful: the Redmi K90 Ultra or the Sony Xperia XA2?
The Redmi K90 Ultra leads on performance (92/100 vs 15/100).
Should you choose the Redmi K90 Ultra over the Sony Xperia XA2?
The Redmi K90 Ultra is a better fit for gamers and power users, those who care about battery life.