Redmi K90 Ultra vs Vivo Y31 Pro
The Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite, while the Vivo Y31 Pro (2025) runs on the MediaTek Dimensity 7300; launch prices were $420 and $195. By overall MobileRank rating, the Redmi K90 Ultra leads — 73/100 vs 50/100 (a 23-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 6500); the Redmi K90 Ultra is faster in AnTuTu (3,233,695 vs 879,714); the Redmi K90 Ultra has NFC for contactless payments, the Vivo Y31 Pro doesn't; the Vivo Y31 Pro is noticeably lighter (204g vs 227g).
Profile comparison
Category scores
Redmi K90 Ultra
Vivo Y31 Pro
What makes Redmi K90 Ultra better?
- Higher AnTuTu: 3233695 vs 879714
- Better Geekbench Single: 3013 vs 1011
- Better Geekbench Multi: 9287 vs 2813
- Bigger battery: 8550 vs 6500 mAh
- Faster charging: 100W vs 44W
- Higher refresh rate: 165Hz vs 120Hz
- Higher performance (92/100 vs 55/100)
- Better camera (37/100 vs 30/100)
- Longer battery life (78/100 vs 58/100)
- Better display (94/100 vs 66/100)
What makes Vivo Y31 Pro better?
- Lighter: 204g vs 227g
- Cheaper at launch: $195 vs $420
- Better portability (56/100 vs 40/100)
Comparison verdict
Comparing the Redmi K90 Ultra vs the Vivo Y31 Pro, the Redmi K90 Ultra scores 23 points higher (73/100 vs 50/100). In the "performance" category, the Redmi K90 Ultra leads (92/100 vs 55/100). In the "battery" category, the Redmi K90 Ultra leads (78/100 vs 58/100). Value score: Redmi K90 Ultra — 72/100, Vivo Y31 Pro — 62/100; 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 Vivo Y31 Pro (92/100 vs 55/100). In the "display" category, the Redmi K90 Ultra notably outperforms the Vivo Y31 Pro (94/100 vs 66/100). In the "camera" category, the Redmi K90 Ultra is a bit better (37/100 vs 30/100). In the "battery" category, the Redmi K90 Ultra notably outperforms the Vivo Y31 Pro (78/100 vs 58/100). In the "portability" category, the Vivo Y31 Pro notably outperforms the Redmi K90 Ultra (56/100 vs 40/100).
Specs comparison
| Specification | Redmi K90 Ultra | Vivo Y31 Pro | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | MediaTek Dimensity 7300 | |
| AnTuTu | 3233695 | 879714 | |
| Geekbench Single | 3013 | 1011 | |
| Geekbench Multi | 9287 | 2813 | |
| Display | 6.8" AMOLED | 6.7" IPS LCD | |
| Resolution | 1280x2772 | 1080x2408 | |
| Refresh rate | 165 Hz | 120 Hz | |
| Battery | 8550 mAh | 6500 mAh | |
| Charging | 100W | 44W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 8 MP | 0 MP | |
| Front camera | 20 MP | 8 MP | |
| RAM | 12GB / 16GB | 8GB | |
| Storage | 256GB / 512GB | 128GB / 256GB | |
| OS | Android 16 | Android 15, Funtouch 15 | |
| Brightness (peak) | 3500 nits | 1050 nits | |
| NFC | yes | no | |
| Protection | IP68/IP69 | IP64 | |
| Dimensions | 162.9×77.9×8.2 mm | 165.7×76.3×8.1 mm | |
| Weight | 227 g | 204 g | |
| Launch price | $420 | $195 |
Camera comparison
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Vivo Y31 Pro
- Main: 50MP f/1.8
- Front: 8MP
Display comparison
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Vivo Y31 Pro
- 6.7" IPS LCD
- Resolution: 1080x2408
- Refresh rate: 120 Hz
Battery and charging
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
Vivo Y31 Pro
- 6500 mAh
- Wired: 44W
- No wireless charging
Overall performance score
We compared Redmi K90 Ultra and Vivo Y31 Pro, covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads Vivo Y31 Pro by 267.6% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $225. Vivo Y31 Pro was $225 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Redmi K90 Ultra significantly outperforms the Vivo Y31 Pro (92/100 vs 55/100).
display
In the "display" category, the Redmi K90 Ultra notably outperforms the Vivo Y31 Pro (94/100 vs 66/100).
camera
In the "camera" category, the Redmi K90 Ultra is a bit better (37/100 vs 30/100).
battery
In the "battery" category, the Redmi K90 Ultra notably outperforms the Vivo Y31 Pro (78/100 vs 58/100).
portability
In the "portability" category, the Vivo Y31 Pro notably outperforms the Redmi K90 Ultra (56/100 vs 40/100).
Frequently asked questions
Which is better: the Redmi K90 Ultra or the Vivo Y31 Pro?
The Redmi K90 Ultra significantly outperforms the Vivo Y31 Pro by 23 points (73/100 vs 50/100).
What is the rating of the Redmi K90 Ultra and the Vivo Y31 Pro?
The Redmi K90 Ultra has a MobileRank rating of 73/100, the Vivo Y31 Pro — 50/100.
Which has the better camera: the Redmi K90 Ultra or the Vivo Y31 Pro?
The Redmi K90 Ultra leads on camera score (37/100 vs 30/100).
Which is more powerful: the Redmi K90 Ultra or the Vivo Y31 Pro?
The Redmi K90 Ultra leads on performance (92/100 vs 55/100).
Should you choose the Redmi K90 Ultra over the Vivo Y31 Pro?
The Redmi K90 Ultra is a better fit for gamers and power users, those who care about battery life.