Redmi K90 Ultra vs Vivo Y21T (India)
The Redmi K90 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite, while the Vivo Y21T (India) (2022) runs on the Qualcomm Snapdragon 680 4G. By overall MobileRank rating, the Redmi K90 Ultra leads — 73/100 vs 38/100 (a 35-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 5000); the Redmi K90 Ultra is faster in AnTuTu (3,233,695 vs 421,228); the Redmi K90 Ultra has NFC for contactless payments, the Vivo Y21T (India) doesn't; the Vivo Y21T (India) is noticeably lighter (182g vs 227g).
Redmi K90 Ultra
Vivo Y21T (India)
- Higher AnTuTu: 3233695 vs 421228
- Better Geekbench Single: 3041 vs 412
- Better Geekbench Multi: 9494 vs 1410
- Bigger battery: 8550 vs 5000 mAh
- Faster charging: 100W vs 18W
- Higher refresh rate: 165Hz vs 90Hz
- Higher performance (92/100 vs 31/100)
- Better camera (37/100 vs 30/100)
- Longer battery life (78/100 vs 43/100)
- Better display (94/100 vs 54/100)
- Lighter: 182g vs 227g
- Better portability (70/100 vs 40/100)
Comparing the Redmi K90 Ultra vs the Vivo Y21T (India), the Redmi K90 Ultra scores 35 points higher (73/100 vs 38/100). In the "performance" category, the Redmi K90 Ultra leads (92/100 vs 31/100). In the "battery" category, the Redmi K90 Ultra leads (78/100 vs 43/100). In the "performance" category, the Redmi K90 Ultra significantly outperforms the Vivo Y21T (India) (92/100 vs 31/100). In the "display" category, the Redmi K90 Ultra significantly outperforms the Vivo Y21T (India) (94/100 vs 54/100). 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 significantly outperforms the Vivo Y21T (India) (78/100 vs 43/100). In the "portability" category, the Vivo Y21T (India) significantly outperforms the Redmi K90 Ultra (70/100 vs 40/100).
| Specification | Redmi K90 Ultra | Vivo Y21T (India) | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | Qualcomm Snapdragon 680 4G | |
| AnTuTu | 3233695 | 421228 | |
| Geekbench Single | 3041 | 412 | |
| Geekbench Multi | 9494 | 1410 | |
| Display | 6.8" AMOLED | 6.6" IPS LCD | |
| Resolution | 1280x2772 | 1080x2408 | |
| Refresh rate | 165 Hz | 90 Hz | |
| Battery | 8550 mAh | 5000 mAh | |
| Charging | 100W | 18W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 8 MP | 0 MP | |
| Front camera | 20 MP | 8 MP | |
| RAM | 12GB / 16GB | 4GB | |
| Storage | 256GB / 512GB | 128GB | |
| OS | Android 16 | Android 11, Funtouch 12 | |
| Brightness (peak) | 3500 nits | — | |
| NFC | yes | no | |
| Protection | IP68/IP69 | — | |
| Dimensions | 162.9×77.9×8.2 mm | 164.3×76.1×8.0 mm | |
| Weight | 227 g | 182 g | |
| Launch price | $420 | — |
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Vivo Y21T (India)
- Main: 50MP f/f/1.8
- Front: 8MP
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Vivo Y21T (India)
- 6.6" IPS LCD
- Resolution: 1080x2408
- Refresh rate: 90 Hz
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
Vivo Y21T (India)
- 5000 mAh
- Wired: 18W
- No wireless charging
We compared Redmi K90 Ultra and Vivo Y21T (India), covering their specs and all relevant benchmarks.
Redmi K90 Ultra leads Vivo Y21T (India) by 667.7% in our overall performance rating.
Vivo Y21T (India)
Price unknownperformance
In the "performance" category, the Redmi K90 Ultra significantly outperforms the Vivo Y21T (India) (92/100 vs 31/100).
display
In the "display" category, the Redmi K90 Ultra significantly outperforms the Vivo Y21T (India) (94/100 vs 54/100).
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 significantly outperforms the Vivo Y21T (India) (78/100 vs 43/100).
portability
In the "portability" category, the Vivo Y21T (India) significantly outperforms the Redmi K90 Ultra (70/100 vs 40/100).
Which is better: the Redmi K90 Ultra or the Vivo Y21T (India)?
The Redmi K90 Ultra significantly outperforms the Vivo Y21T (India) by 35 points (73/100 vs 38/100).
What is the rating of the Redmi K90 Ultra and the Vivo Y21T (India)?
The Redmi K90 Ultra has a MobileRank rating of 73/100, the Vivo Y21T (India) — 38/100.
Which has the better camera: the Redmi K90 Ultra or the Vivo Y21T (India)?
The Redmi K90 Ultra leads on camera score (37/100 vs 30/100).
Which is more powerful: the Redmi K90 Ultra or the Vivo Y21T (India)?
The Redmi K90 Ultra leads on performance (92/100 vs 31/100).
Should you choose the Redmi K90 Ultra over the Vivo Y21T (India)?
The Redmi K90 Ultra is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers. The Vivo Y21T (India) is a better fit for everyday use.