Infinix S4 vs Vivo Y91i
The Infinix S4 (2019) runs on the MediaTek Helio P22, while the Vivo Y91i (2019) runs on the MediaTek Helio P22. By overall MobileRank rating, the Infinix S4 leads — 23/100 vs 21/100 (a 2-point difference). Key differences: the Vivo Y91i has the bigger battery (4030 mAh vs 4000).
Profile comparison
Category scores
Infinix S4
Vivo Y91i
What makes Infinix S4 better?
- Lighter: 154g vs 163g
- Better camera (18/100 vs 10/100)
- Better portability (84/100 vs 78/100)
What makes Vivo Y91i better?
- Bigger battery: 4030 vs 4000 mAh
- Better display (39/100 vs 37/100)
Comparison verdict
Comparing the Infinix S4 vs the Vivo Y91i, the Infinix S4 scores 2 points higher (23/100 vs 21/100). In the "performance" category, both devices are on the same level — 10/100. In the "display" category, the Vivo Y91i and the Infinix S4 are nearly equal (39/100 vs 37/100). In the "camera" category, the Infinix S4 is a bit better (18/100 vs 10/100). In the "battery" category, both devices are on the same level — 32/100. In the "portability" category, the Infinix S4 is a bit better (84/100 vs 78/100).
Specs comparison
| Specification | Infinix S4 | Vivo Y91i | |
|---|---|---|---|
| Processor | MediaTek Helio P22 | MediaTek Helio P22 | |
| AnTuTu | 177554 | 177554 | |
| Geekbench Single | 233 | 233 | |
| Geekbench Multi | 723 | 723 | |
| Display | 6.2" IPS LCD | 6.2" IPS LCD | |
| Resolution | 720x1440 | 720x1520 | |
| Refresh rate | — | — | |
| Battery | 4000 mAh | 4030 mAh | |
| Charging | — | — | |
| Main camera | 13 MP | 13 MP | |
| Front camera | 32 MP | 8 MP | |
| RAM | 3GB / 4GB | 2GB | |
| Storage | 32GB / 64GB | 32GB | |
| OS | Android 9.0 (Pie) | Android 8.1 (Oreo); Funtouch 4.5 | |
| NFC | no | no | |
| Dimensions | 156.0×75.0×7.9 mm | 155.1×75.1×8.3 mm | |
| Weight | 154 g | 163 g | |
| Launch price | — | — |
Camera comparison
Infinix S4
- Main: 13MP
- Front: 32MP
Vivo Y91i
- Main: 13MP f/2.2
- Front: 8MP
Display comparison
Infinix S4
- 6.2" IPS LCD
- Resolution: 720x1440
- Refresh rate: —
Vivo Y91i
- 6.2" IPS LCD
- Resolution: 720x1520
- Refresh rate: —
Battery and charging
Infinix S4
- 4000 mAh
- Wireless charging: no data
Vivo Y91i
- 4030 mAh
- Wireless charging: no data
Overall performance score
We compared Infinix S4 and Vivo Y91i, covering their specs and all relevant benchmarks.
Equal performance based on benchmark results.
Benchmarks
Detailed category analysis
performance
In the "performance" category, both devices are on the same level — 10/100.
display
In the "display" category, the Vivo Y91i and the Infinix S4 are nearly equal (39/100 vs 37/100).
camera
In the "camera" category, the Infinix S4 is a bit better (18/100 vs 10/100).
battery
In the "battery" category, both devices are on the same level — 32/100.
portability
In the "portability" category, the Infinix S4 is a bit better (84/100 vs 78/100).
Frequently asked questions
Which is better: the Infinix S4 or the Vivo Y91i?
The Infinix S4 edges out the Vivo Y91i by just 2 points — the two devices are very close in overall level.
What is the rating of the Infinix S4 and the Vivo Y91i?
The Infinix S4 has a MobileRank rating of 23/100, the Vivo Y91i — 21/100.
Which has the better camera: the Infinix S4 or the Vivo Y91i?
The Infinix S4 leads on camera score (18/100 vs 10/100).
Should you choose the Infinix S4 over the Vivo Y91i?
Neither model stands out enough to recommend it for a specific use case: the clearest difference is camera — better on the Infinix S4 (18/100 vs 10/100).