Redmi K90 vs Vivo Y31d
The Redmi K90 (2025) runs on the Qualcomm Snapdragon 8 Elite, while the Vivo Y31d (2026) runs on the Qualcomm Snapdragon 6s 4G Gen 2; estimated prices are $401 and $185. By overall MobileRank rating, the Redmi K90 leads — 68/100 vs 33/100 (a 35-point difference). Key differences: the Vivo Y31d has the bigger battery (7200 mAh vs 7100); the Redmi K90 is faster in AnTuTu (3,088,357 vs 522,680); the Redmi K90 has NFC for contactless payments, the Vivo Y31d doesn't.
Redmi K90
Vivo Y31d
- Higher AnTuTu: 3088357 vs 522680
- Better Geekbench Single: 3050 vs 489
- Better Geekbench Multi: 9300 vs 1532
- Faster charging: 100W vs 44W
- Lighter: 206g vs 219g
- Higher performance (69/100 vs 0/100)
- Better camera (53/100 vs 24/100)
- Longer battery life (71/100 vs 57/100)
- Better design/ergonomics (42/100 vs 26/100)
- Bigger battery: 7200 vs 7100 mAh
- Cheaper: $185 vs $401
- Better value for money (97/100 vs 82/100)
Comparing the Redmi K90 vs the Vivo Y31d, the Redmi K90 scores 35 points higher (68/100 vs 33/100). In the "performance" category, the Redmi K90 leads (69/100 vs 0/100). In the "camera" category, the Redmi K90 leads (53/100 vs 24/100). In the "battery" category, the Redmi K90 leads (71/100 vs 57/100). In the "value for money" category, the Vivo Y31d leads (97/100 vs 82/100). In the "performance" category, the Redmi K90 significantly outperforms the Vivo Y31d (69/100 vs 0/100). In the "display" category, both devices are on the same level — 100/100. In the "camera" category, the Redmi K90 notably outperforms the Vivo Y31d (53/100 vs 24/100). In the "battery" category, the Redmi K90 is a bit better (71/100 vs 57/100). In the "design" category, the Redmi K90 notably outperforms the Vivo Y31d (42/100 vs 26/100). In the "value for money" category, the Vivo Y31d notably outperforms the Redmi K90 (97/100 vs 82/100).
| Specification | Redmi K90 | Vivo Y31d | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | Qualcomm Snapdragon 6s 4G Gen 2 | |
| AnTuTu | 3088357 | 522680 | |
| Geekbench Single | 3050 | 489 | |
| Geekbench Multi | 9300 | 1532 | |
| Display | 6.6" AMOLED | 6.8" IPS LCD | |
| Resolution | 2510x1156 | 720x1570 | |
| Refresh rate | 120 Hz | 120 Hz | |
| Battery | 7100 mAh | 7200 mAh | |
| Charging | 100W | 44W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 8 MP | 0 MP | |
| Telephoto | 50 MP | 0 MP | |
| Front camera | 20 MP | 8 MP | |
| RAM | 12GB / 16GB | 6GB / 8GB | |
| Storage | 256GB / 512GB | 128GB / 256GB | |
| OS | Android 16 | Android 16 | |
| Brightness (peak) | 3500 nits | 1250 nits | |
| NFC | yes | no | |
| Protection | IP68 | IP68/IP69 | |
| Dimensions | 157.5×75.3×8.0 mm | 166.6×78.4×8.4 mm | |
| Weight | 206 g | 219 g | |
| Price | $401 | $185 |
Redmi K90
- Main: 50MP f/f/1.9
- Ultrawide: 8MP
- Telephoto: 50MP
- Front: 20MP
Vivo Y31d
- Main: 50MP f/f/2.0
- Front: 8MP
Redmi K90
- 6.6" AMOLED
- Resolution: 2510x1156
- Refresh rate: 120 Hz
Vivo Y31d
- 6.8" IPS LCD
- Resolution: 720x1570
- Refresh rate: 120 Hz
Redmi K90
- 7100 mAh
- Wired: 100W
- No wireless charging
Vivo Y31d
- 7200 mAh
- Wired: 44W
- No wireless charging
We compared Redmi K90 and Vivo Y31d, covering their specs and all relevant benchmarks.
Redmi K90 leads Vivo Y31d by 490.9% in our overall performance rating.
Price difference: $216. Vivo Y31d is cheaper by $216.
performance
In the "performance" category, the Redmi K90 significantly outperforms the Vivo Y31d (69/100 vs 0/100).
display
In the "display" category, both devices are on the same level — 100/100.
camera
In the "camera" category, the Redmi K90 notably outperforms the Vivo Y31d (53/100 vs 24/100).
battery
In the "battery" category, the Redmi K90 is a bit better (71/100 vs 57/100).
design
In the "design" category, the Redmi K90 notably outperforms the Vivo Y31d (42/100 vs 26/100).
value for money
In the "value for money" category, the Vivo Y31d notably outperforms the Redmi K90 (97/100 vs 82/100).
Which is better: the Redmi K90 or the Vivo Y31d?
The Redmi K90 significantly outperforms the Vivo Y31d by 35 points (68/100 vs 33/100).
What is the rating of the Redmi K90 and the Vivo Y31d?
The Redmi K90 has a MobileRank rating of 68/100, the Vivo Y31d — 33/100.
Which has the better camera: the Redmi K90 or the Vivo Y31d?
The Redmi K90 leads on camera score (53/100 vs 24/100).
Which is more powerful: the Redmi K90 or the Vivo Y31d?
The Redmi K90 leads on performance (69/100 vs 0/100).
Should you choose the Redmi K90 over the Vivo Y31d?
The Redmi K90 is a better fit for active users, budget-conscious buyers. The Vivo Y31d is a better fit for budget-conscious buyers.