Poco F8 Ultra vs Vivo Y31s 5G
The Poco F8 Ultra (2025) runs on the Qualcomm Snapdragon 8 Elite Gen 5, while the Vivo Y31s 5G (2026) runs on the Qualcomm Snapdragon 4 Gen 2; launch prices were $729 and $200. By overall MobileRank rating, the Poco F8 Ultra leads — 89/100 vs 47/100 (a 42-point difference). Key differences: the main camera is 200 MP vs 50 MP; the Poco F8 Ultra is faster in AnTuTu (3,640,351 vs 560,863); the Poco F8 Ultra has NFC for contactless payments, the Vivo Y31s 5G doesn't.
Poco F8 Ultra
Vivo Y31s 5G
- Higher AnTuTu: 3640351 vs 560863
- Better Geekbench Single: 3640 vs 923
- Better Geekbench Multi: 11033 vs 2249
- Faster charging: 100W vs 44W
- Better main camera: 200MP vs 50MP
- Higher performance (97/100 vs 47/100)
- Better camera (90/100 vs 37/100)
- Longer battery life (85/100 vs 58/100)
- Better display (90/100 vs 55/100)
- Lighter: 207g vs 218g
- Cheaper at launch: $200 vs $729
- Better portability (50/100 vs 49/100)
Comparing the Poco F8 Ultra vs the Vivo Y31s 5G, the Poco F8 Ultra scores 42 points higher (89/100 vs 47/100). In the "performance" category, the Poco F8 Ultra leads (97/100 vs 47/100). In the "camera" category, the Poco F8 Ultra leads (90/100 vs 37/100). In the "battery" category, the Poco F8 Ultra leads (85/100 vs 58/100). Value score: Poco F8 Ultra — 90/100, Vivo Y31s 5G — 56/100; it is biased by price level, so it should not be compared directly between devices at different prices. In the "performance" category, the Poco F8 Ultra significantly outperforms the Vivo Y31s 5G (97/100 vs 47/100). In the "display" category, the Poco F8 Ultra significantly outperforms the Vivo Y31s 5G (90/100 vs 55/100). In the "camera" category, the Poco F8 Ultra significantly outperforms the Vivo Y31s 5G (90/100 vs 37/100). In the "battery" category, the Poco F8 Ultra notably outperforms the Vivo Y31s 5G (85/100 vs 58/100). In the "portability" category, the Vivo Y31s 5G and the Poco F8 Ultra are nearly equal (50/100 vs 49/100).
| Specification | Poco F8 Ultra | Vivo Y31s 5G | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 8 Elite Gen 5 | Qualcomm Snapdragon 4 Gen 2 | |
| AnTuTu | 3640351 | 560863 | |
| Geekbench Single | 3640 | 923 | |
| Geekbench Multi | 11033 | 2249 | |
| Display | 6.7" LTPO AMOLED | 6.7" IPS LCD | |
| Resolution | 3200x1440 | 1600x720 | |
| Refresh rate | 120 Hz | 120 Hz | |
| Battery | 6500 mAh | 6500 mAh | |
| Charging | 100W | 44W | |
| Wireless charging | 50W | 0W | |
| Main camera | 200 MP | 50 MP | |
| Ultrawide | 50 MP | 0 MP | |
| Telephoto | 50 MP | 0 MP | |
| Front camera | 32 MP | 32 MP | |
| RAM | 12GB / 16GB | 8GB | |
| Storage | 256GB / 512GB | 256GB | |
| OS | Android 15 | Android 16 | |
| Brightness (peak) | 3500 nits | — | |
| NFC | yes | no | |
| Protection | IP68 | — | |
| Dimensions | 163.3×77.8×7.9 mm | 164.2×75.4×8.4 mm | |
| Weight | 218 g | 207 g | |
| Launch price | $729 | $200 |
Poco F8 Ultra
- Main: 200MP f/1.63
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Vivo Y31s 5G
- Main: 50MP f/f/1.8
- Front: 32MP
Poco F8 Ultra
- 6.7" LTPO AMOLED
- Resolution: 3200x1440
- Refresh rate: 120 Hz
Vivo Y31s 5G
- 6.7" IPS LCD
- Resolution: 1600x720
- Refresh rate: 120 Hz
Poco F8 Ultra
- 6500 mAh
- NanoReview test: web browsing 15:14 hrs, total 32:38 hrs
- Wired: 100W
- Wireless: 50W
Vivo Y31s 5G
- 6500 mAh
- Wired: 44W
- No wireless charging
We compared Poco F8 Ultra and Vivo Y31s 5G, covering their specs and all relevant benchmarks.
Poco F8 Ultra leads Vivo Y31s 5G by 549.1% in our overall performance rating.
Launch price difference: $529. Vivo Y31s 5G was $529 cheaper at launch.
performance
In the "performance" category, the Poco F8 Ultra significantly outperforms the Vivo Y31s 5G (97/100 vs 47/100).
display
In the "display" category, the Poco F8 Ultra significantly outperforms the Vivo Y31s 5G (90/100 vs 55/100).
camera
In the "camera" category, the Poco F8 Ultra significantly outperforms the Vivo Y31s 5G (90/100 vs 37/100).
battery
In the "battery" category, the Poco F8 Ultra notably outperforms the Vivo Y31s 5G (85/100 vs 58/100).
portability
In the "portability" category, the Vivo Y31s 5G and the Poco F8 Ultra are nearly equal (50/100 vs 49/100).
Which is better: the Poco F8 Ultra or the Vivo Y31s 5G?
The Poco F8 Ultra significantly outperforms the Vivo Y31s 5G by 42 points (89/100 vs 47/100).
What is the rating of the Poco F8 Ultra and the Vivo Y31s 5G?
The Poco F8 Ultra has a MobileRank rating of 89/100, the Vivo Y31s 5G — 47/100.
Which has the better camera: the Poco F8 Ultra or the Vivo Y31s 5G?
The Poco F8 Ultra leads on camera score (90/100 vs 37/100).
Which is more powerful: the Poco F8 Ultra or the Vivo Y31s 5G?
The Poco F8 Ultra leads on performance (97/100 vs 47/100).
Should you choose the Poco F8 Ultra over the Vivo Y31s 5G?
The Poco F8 Ultra is a better fit for gamers and power users, mobile photography enthusiasts, those who care about battery life, budget-conscious buyers. The Vivo Y31s 5G is a better fit for everyday use.