Vivo Y31s 5G vs Xiaomi 15 Ultra
The Vivo Y31s 5G (2026) runs on the Qualcomm Snapdragon 4 Gen 2, while the Xiaomi 15 Ultra (2025) runs on the Qualcomm Snapdragon 8 Elite; launch prices were $200 and $999. By overall MobileRank rating, the Xiaomi 15 Ultra leads — 85/100 vs 47/100 (a 38-point difference). Key differences: the Vivo Y31s 5G has the bigger battery (6500 mAh vs 6000); the Xiaomi 15 Ultra is faster in AnTuTu (3,030,376 vs 560,863); the Xiaomi 15 Ultra has NFC for contactless payments, the Vivo Y31s 5G doesn't; the Vivo Y31s 5G is noticeably lighter (207g vs 225g).
Vivo Y31s 5G
Xiaomi 15 Ultra
- Bigger battery: 6500 vs 6000 mAh
- Lighter: 207g vs 225g
- Cheaper at launch: $200 vs $999
- Better portability (50/100 vs 29/100)
- Higher AnTuTu: 3030376 vs 560863
- Better Geekbench Single: 3050 vs 923
- Better Geekbench Multi: 10200 vs 2249
- Faster charging: 90W vs 44W
- Higher performance (92/100 vs 47/100)
- Better camera (87/100 vs 37/100)
- Longer battery life (80/100 vs 58/100)
- Better display (90/100 vs 55/100)
Comparing the Vivo Y31s 5G vs the Xiaomi 15 Ultra, the Xiaomi 15 Ultra scores 38 points higher (85/100 vs 47/100). In the "performance" category, the Xiaomi 15 Ultra leads (92/100 vs 47/100). In the "camera" category, the Xiaomi 15 Ultra leads (87/100 vs 37/100). In the "battery" category, the Xiaomi 15 Ultra leads (80/100 vs 58/100). Value score: Vivo Y31s 5G — 56/100, Xiaomi 15 Ultra — 82/100; it is biased by price level, so it should not be compared directly between devices at different prices. In the "performance" category, the Xiaomi 15 Ultra significantly outperforms the Vivo Y31s 5G (92/100 vs 47/100). In the "display" category, the Xiaomi 15 Ultra significantly outperforms the Vivo Y31s 5G (90/100 vs 55/100). In the "camera" category, the Xiaomi 15 Ultra significantly outperforms the Vivo Y31s 5G (87/100 vs 37/100). In the "battery" category, the Xiaomi 15 Ultra notably outperforms the Vivo Y31s 5G (80/100 vs 58/100). In the "portability" category, the Vivo Y31s 5G notably outperforms the Xiaomi 15 Ultra (50/100 vs 29/100).
| Specification | Vivo Y31s 5G | Xiaomi 15 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 4 Gen 2 | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 560863 | 3030376 | |
| Geekbench Single | 923 | 3050 | |
| Geekbench Multi | 2249 | 10200 | |
| Display | 6.7" IPS LCD | 6.7" LTPO AMOLED | |
| Resolution | 1600x720 | 3200x1440 | |
| Refresh rate | 120 Hz | 120 Hz | |
| Battery | 6500 mAh | 6000 mAh | |
| Charging | 44W | 90W | |
| Wireless charging | 0W | 50W | |
| DXOMark (camera) | — | 159 | |
| Main camera | 50 MP | 50 MP | |
| Ultrawide | 0 MP | 50 MP | |
| Telephoto | 0 MP | 50 MP | |
| Front camera | 32 MP | 32 MP | |
| RAM | 8GB | 16GB | |
| Storage | 256GB | 256GB / 512GB / 1TB | |
| OS | Android 16 | Android 15 / HyperOS 2 | |
| Brightness (peak) | — | 3200 nits | |
| NFC | no | yes | |
| Protection | — | IP68 | |
| Dimensions | 164.2×75.4×8.4 mm | 161.3×75.3×9.4 mm | |
| Weight | 207 g | 225 g | |
| Launch price | $200 | $999 |
Vivo Y31s 5G
- Main: 50MP f/f/1.8
- Front: 32MP
Xiaomi 15 Ultra
- Main: 50MP f/f/1.63
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Vivo Y31s 5G
- 6.7" IPS LCD
- Resolution: 1600x720
- Refresh rate: 120 Hz
Xiaomi 15 Ultra
- 6.7" LTPO AMOLED
- Resolution: 3200x1440
- Refresh rate: 120 Hz
Vivo Y31s 5G
- 6500 mAh
- Wired: 44W
- No wireless charging
Xiaomi 15 Ultra
- 6000 mAh
- NanoReview test: web browsing 12:19 hrs, total 30:03 hrs
- Wired: 90W
- Wireless: 50W
We compared Vivo Y31s 5G and Xiaomi 15 Ultra, covering their specs and all relevant benchmarks.
Xiaomi 15 Ultra leads Vivo Y31s 5G by 81.5% in our overall performance rating.
Launch price difference: $799. Vivo Y31s 5G was $799 cheaper at launch.
performance
In the "performance" category, the Xiaomi 15 Ultra significantly outperforms the Vivo Y31s 5G (92/100 vs 47/100).
display
In the "display" category, the Xiaomi 15 Ultra significantly outperforms the Vivo Y31s 5G (90/100 vs 55/100).
camera
In the "camera" category, the Xiaomi 15 Ultra significantly outperforms the Vivo Y31s 5G (87/100 vs 37/100).
battery
In the "battery" category, the Xiaomi 15 Ultra notably outperforms the Vivo Y31s 5G (80/100 vs 58/100).
portability
In the "portability" category, the Vivo Y31s 5G notably outperforms the Xiaomi 15 Ultra (50/100 vs 29/100).
Which is better: the Vivo Y31s 5G or the Xiaomi 15 Ultra?
The Xiaomi 15 Ultra significantly outperforms the Vivo Y31s 5G by 38 points (85/100 vs 47/100).
What is the rating of the Vivo Y31s 5G and the Xiaomi 15 Ultra?
The Vivo Y31s 5G has a MobileRank rating of 47/100, the Xiaomi 15 Ultra — 85/100.
Which has the better camera: the Vivo Y31s 5G or the Xiaomi 15 Ultra?
The Xiaomi 15 Ultra leads on camera score (87/100 vs 37/100).
Which is more powerful: the Vivo Y31s 5G or the Xiaomi 15 Ultra?
The Xiaomi 15 Ultra leads on performance (92/100 vs 47/100).
Should you choose the Vivo Y31s 5G over the Xiaomi 15 Ultra?
The Vivo Y31s 5G is a better fit for everyday use. The Xiaomi 15 Ultra is a better fit for gamers and power users, mobile photography enthusiasts, those who care about battery life, budget-conscious buyers.