Redmi K90 Max vs Vivo Y31s 5G
The Redmi K90 Max (2026) runs on the MediaTek Dimensity 9500, while the Vivo Y31s 5G (2026) runs on the Qualcomm Snapdragon 4 Gen 2; estimated prices are $504 and $200. By overall MobileRank rating, the Redmi K90 Max leads — 67/100 vs 36/100 (a 31-point difference). Key differences: the Redmi K90 Max has the bigger battery (8550 mAh vs 6500); the Redmi K90 Max is faster in AnTuTu (3,803,420 vs 560,863); the Redmi K90 Max has NFC for contactless payments, the Vivo Y31s 5G doesn't; the Vivo Y31s 5G is noticeably lighter (207g vs 227g).
Redmi K90 Max
Vivo Y31s 5G
- Higher AnTuTu: 3803420 vs 560863
- Better Geekbench Single: 3228 vs 923
- Better Geekbench Multi: 9553 vs 2249
- Bigger battery: 8550 vs 6500 mAh
- Faster charging: 100W vs 44W
- Higher refresh rate: 165Hz vs 120Hz
- Higher performance (82/100 vs 0/100)
- Longer battery life (77/100 vs 54/100)
- Lighter: 207g vs 227g
- Cheaper: $200 vs $504
- Better camera (34/100 vs 32/100)
- Better design/ergonomics (41/100 vs 16/100)
- Better value for money (96/100 vs 75/100)
Comparing the Redmi K90 Max vs the Vivo Y31s 5G, the Redmi K90 Max scores 31 points higher (67/100 vs 36/100). In the "performance" category, the Redmi K90 Max leads (82/100 vs 0/100). In the "battery" category, the Redmi K90 Max leads (77/100 vs 54/100). In the "value for money" category, the Vivo Y31s 5G leads (96/100 vs 75/100). In the "performance" category, the Redmi K90 Max significantly outperforms the Vivo Y31s 5G (82/100 vs 0/100). In the "display" category, both devices are on the same level — 100/100. In the "camera" category, the Vivo Y31s 5G and the Redmi K90 Max are nearly equal (34/100 vs 32/100). In the "battery" category, the Redmi K90 Max notably outperforms the Vivo Y31s 5G (77/100 vs 54/100). In the "design" category, the Vivo Y31s 5G notably outperforms the Redmi K90 Max (41/100 vs 16/100). In the "value for money" category, the Vivo Y31s 5G notably outperforms the Redmi K90 Max (96/100 vs 75/100).
| Specification | Redmi K90 Max | Vivo Y31s 5G | |
|---|---|---|---|
| Processor | MediaTek Dimensity 9500 | Qualcomm Snapdragon 4 Gen 2 | |
| AnTuTu | 3803420 | 560863 | |
| Geekbench Single | 3228 | 923 | |
| Geekbench Multi | 9553 | 2249 | |
| Display | 6.8" AMOLED | 6.7" IPS LCD | |
| Resolution | 2772x1280 | 1600x720 | |
| 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 | 32 MP | |
| RAM | 12GB / 16GB | 8GB | |
| Storage | 256GB / 512GB / 1TB | 256GB | |
| OS | Android 16 | Android 16 | |
| Brightness (peak) | 3500 nits | — | |
| NFC | yes | no | |
| Protection | IP66 | — | |
| Dimensions | 162.9×77.9×8.1 mm | 164.2×75.4×8.4 mm | |
| Weight | 227 g | 207 g | |
| Price | $504 | $200 |
Redmi K90 Max
- Main: 50MP f/f/1.68
- Ultrawide: 8MP
- Front: 20MP
Vivo Y31s 5G
- Main: 50MP f/f/1.8
- Front: 32MP
Redmi K90 Max
- 6.8" AMOLED
- Resolution: 2772x1280
- Refresh rate: 165 Hz
Vivo Y31s 5G
- 6.7" IPS LCD
- Resolution: 1600x720
- Refresh rate: 120 Hz
Redmi K90 Max
- 8550 mAh
- Wired: 100W
- No wireless charging
Vivo Y31s 5G
- 6500 mAh
- Wired: 44W
- No wireless charging
We compared Redmi K90 Max and Vivo Y31s 5G, covering their specs and all relevant benchmarks.
Redmi K90 Max leads Vivo Y31s 5G by 578.1% in our overall performance rating.
Price difference: $304. Vivo Y31s 5G is cheaper by $304.
performance
In the "performance" category, the Redmi K90 Max significantly outperforms the Vivo Y31s 5G (82/100 vs 0/100).
display
In the "display" category, both devices are on the same level — 100/100.
camera
In the "camera" category, the Vivo Y31s 5G and the Redmi K90 Max are nearly equal (34/100 vs 32/100).
battery
In the "battery" category, the Redmi K90 Max notably outperforms the Vivo Y31s 5G (77/100 vs 54/100).
design
In the "design" category, the Vivo Y31s 5G notably outperforms the Redmi K90 Max (41/100 vs 16/100).
value for money
In the "value for money" category, the Vivo Y31s 5G notably outperforms the Redmi K90 Max (96/100 vs 75/100).
Which is better: the Redmi K90 Max or the Vivo Y31s 5G?
The Redmi K90 Max significantly outperforms the Vivo Y31s 5G by 31 points (67/100 vs 36/100).
What is the rating of the Redmi K90 Max and the Vivo Y31s 5G?
The Redmi K90 Max has a MobileRank rating of 67/100, the Vivo Y31s 5G — 36/100.
Which is more powerful: the Redmi K90 Max or the Vivo Y31s 5G?
The Redmi K90 Max leads on performance (82/100 vs 0/100).
Should you choose the Redmi K90 Max over the Vivo Y31s 5G?
The Redmi K90 Max is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers. The Vivo Y31s 5G is a better fit for budget-conscious buyers.