Redmi K90 vs Vivo Y31s 5G
The Redmi K90 (2025) runs on the Qualcomm Snapdragon 8 Elite, while the Vivo Y31s 5G (2026) runs on the Qualcomm Snapdragon 4 Gen 2; estimated prices are $401 and $200. By overall MobileRank rating, the Redmi K90 leads — 68/100 vs 36/100 (a 32-point difference). Key differences: the Redmi K90 has the bigger battery (7100 mAh vs 6500); the Redmi K90 is faster in AnTuTu (3,088,357 vs 560,863); the Redmi K90 has NFC for contactless payments, the Vivo Y31s 5G doesn't.
Redmi K90
Vivo Y31s 5G
- Higher AnTuTu: 3088357 vs 560863
- Better Geekbench Single: 3050 vs 923
- Better Geekbench Multi: 9300 vs 2249
- Bigger battery: 7100 vs 6500 mAh
- Faster charging: 100W vs 44W
- Lighter: 206g vs 207g
- Higher performance (69/100 vs 0/100)
- Better camera (53/100 vs 34/100)
- Longer battery life (71/100 vs 54/100)
- Better design/ergonomics (42/100 vs 41/100)
- Cheaper: $200 vs $401
- Better value for money (96/100 vs 82/100)
Comparing the Redmi K90 vs the Vivo Y31s 5G, the Redmi K90 scores 32 points higher (68/100 vs 36/100). In the "performance" category, the Redmi K90 leads (69/100 vs 0/100). In the "camera" category, the Redmi K90 leads (53/100 vs 34/100). In the "battery" category, the Redmi K90 leads (71/100 vs 54/100). In the "value for money" category, the Vivo Y31s 5G leads (96/100 vs 82/100). In the "performance" category, the Redmi K90 significantly outperforms the Vivo Y31s 5G (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 Y31s 5G (53/100 vs 34/100). In the "battery" category, the Redmi K90 notably outperforms the Vivo Y31s 5G (71/100 vs 54/100). In the "design" category, the Redmi K90 and the Vivo Y31s 5G are nearly equal (42/100 vs 41/100). In the "value for money" category, the Vivo Y31s 5G is a bit better (96/100 vs 82/100).
| Specification | Redmi K90 | Vivo Y31s 5G | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite | Qualcomm Snapdragon 4 Gen 2 | |
| AnTuTu | 3088357 | 560863 | |
| Geekbench Single | 3050 | 923 | |
| Geekbench Multi | 9300 | 2249 | |
| Display | 6.6" AMOLED | 6.7" IPS LCD | |
| Resolution | 2510x1156 | 1600x720 | |
| Refresh rate | 120 Hz | 120 Hz | |
| Battery | 7100 mAh | 6500 mAh | |
| Charging | 100W | 44W | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 8 MP | 0 MP | |
| Telephoto | 50 MP | 0 MP | |
| Front camera | 20 MP | 32 MP | |
| RAM | 12GB / 16GB | 8GB | |
| Storage | 256GB / 512GB | 256GB | |
| OS | Android 16 | Android 16 | |
| Brightness (peak) | 3500 nits | — | |
| NFC | yes | no | |
| Protection | IP68 | — | |
| Dimensions | 157.5×75.3×8.0 mm | 164.2×75.4×8.4 mm | |
| Weight | 206 g | 207 g | |
| Price | $401 | $200 |
Redmi K90
- Main: 50MP f/f/1.9
- Ultrawide: 8MP
- Telephoto: 50MP
- Front: 20MP
Vivo Y31s 5G
- Main: 50MP f/f/1.8
- Front: 32MP
Redmi K90
- 6.6" AMOLED
- Resolution: 2510x1156
- Refresh rate: 120 Hz
Vivo Y31s 5G
- 6.7" IPS LCD
- Resolution: 1600x720
- Refresh rate: 120 Hz
Redmi K90
- 7100 mAh
- Wired: 100W
- No wireless charging
Vivo Y31s 5G
- 6500 mAh
- Wired: 44W
- No wireless charging
We compared Redmi K90 and Vivo Y31s 5G, covering their specs and all relevant benchmarks.
Redmi K90 leads Vivo Y31s 5G by 450.6% in our overall performance rating.
Price difference: $201. Vivo Y31s 5G is cheaper by $201.
performance
In the "performance" category, the Redmi K90 significantly outperforms the Vivo Y31s 5G (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 Y31s 5G (53/100 vs 34/100).
battery
In the "battery" category, the Redmi K90 notably outperforms the Vivo Y31s 5G (71/100 vs 54/100).
design
In the "design" category, the Redmi K90 and the Vivo Y31s 5G are nearly equal (42/100 vs 41/100).
value for money
In the "value for money" category, the Vivo Y31s 5G is a bit better (96/100 vs 82/100).
Which is better: the Redmi K90 or the Vivo Y31s 5G?
The Redmi K90 significantly outperforms the Vivo Y31s 5G by 32 points (68/100 vs 36/100).
What is the rating of the Redmi K90 and the Vivo Y31s 5G?
The Redmi K90 has a MobileRank rating of 68/100, the Vivo Y31s 5G — 36/100.
Which has the better camera: the Redmi K90 or the Vivo Y31s 5G?
The Redmi K90 leads on camera score (53/100 vs 34/100).
Which is more powerful: the Redmi K90 or the Vivo Y31s 5G?
The Redmi K90 leads on performance (69/100 vs 0/100).
Should you choose the Redmi K90 over the Vivo Y31s 5G?
The Redmi K90 is a better fit for active users, budget-conscious buyers. The Vivo Y31s 5G is a better fit for budget-conscious buyers.