Redmi 15 4G vs Vivo Y77 (China)
The Redmi 15 4G (2025) runs on the Qualcomm Snapdragon 685, while the Vivo Y77 (China) (2022) runs on the MediaTek Dimensity 930. By overall MobileRank rating, the Redmi 15 4G leads — 32/100 vs 29/100 (a 3-point difference). Key differences: the Redmi 15 4G has the bigger battery (7000 mAh vs 4500); the Redmi 15 4G has NFC for contactless payments, the Vivo Y77 (China) doesn't; the Vivo Y77 (China) is noticeably lighter (194g vs 224g).
Redmi 15 4G
Vivo Y77 (China)
- Bigger battery: 7000 vs 4500 mAh
- Higher refresh rate: 144Hz vs 120Hz
- Longer battery life (53/100 vs 39/100)
- Better value for money (100/100 vs 55/100)
- Faster charging: 80W vs 33W
- Lighter: 194g vs 224g
- Better design/ergonomics (57/100 vs 20/100)
Comparing the Redmi 15 4G vs the Vivo Y77 (China), the Redmi 15 4G scores 3 points higher (32/100 vs 29/100). In the "battery" category, the Redmi 15 4G leads (53/100 vs 39/100). In the "value for money" category, the Redmi 15 4G leads (100/100 vs 55/100). In the "performance" category, both devices are on the same level — 0/100. In the "display" category, both devices are on the same level — 100/100. In the "camera" category, both devices are on the same level — 24/100. In the "battery" category, the Redmi 15 4G is a bit better (53/100 vs 39/100). In the "design" category, the Vivo Y77 (China) significantly outperforms the Redmi 15 4G (57/100 vs 20/100). In the "value for money" category, the Redmi 15 4G significantly outperforms the Vivo Y77 (China) (100/100 vs 55/100).
| Specification | Redmi 15 4G | Vivo Y77 (China) | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 685 | MediaTek Dimensity 930 | |
| AnTuTu | 467392 | — | |
| Geekbench Single | 466 | — | |
| Geekbench Multi | 1396 | — | |
| Display | 6.9" IPS LCD | 6.6" IPS LCD | |
| Resolution | 1080x2340 | 1080x2388 | |
| Refresh rate | 144 Hz | 120 Hz | |
| Battery | 7000 mAh | 4500 mAh | |
| Charging | 33W | 80W | |
| Main camera | 50 MP | 50 MP | |
| Front camera | 8 MP | 8 MP | |
| RAM | 4GB / 6GB / 8GB | 6GB / 8GB / 12GB | |
| Storage | 128GB / 256GB | 128GB / 256GB | |
| OS | Android 15, HyperOS 2 | Android 12, Origin OS Ocean | |
| NFC | yes | no | |
| Protection | IP64 | — | |
| Dimensions | 171.1×82.1×8.6 mm | 164.2×75.8×8.6 mm | |
| Weight | 224 g | 194 g | |
| Price | $135 | — |
Redmi 15 4G
- Main: 50MP f/f/1.8
- Front: 8MP
Vivo Y77 (China)
- Main: 50MP f/f/1.8
- Front: 8MP
Redmi 15 4G
- 6.9" IPS LCD
- Resolution: 1080x2340
- Refresh rate: 144 Hz
Vivo Y77 (China)
- 6.6" IPS LCD
- Resolution: 1080x2388
- Refresh rate: 120 Hz
Redmi 15 4G
- 7000 mAh
- Wired: 33W
- No wireless charging
Vivo Y77 (China)
- 4500 mAh
- Wired: 80W
- No wireless charging
Vivo Y77 (China)
Price unknownperformance
In the "performance" category, both devices are on the same level — 0/100.
display
In the "display" category, both devices are on the same level — 100/100.
camera
In the "camera" category, both devices are on the same level — 24/100.
battery
In the "battery" category, the Redmi 15 4G is a bit better (53/100 vs 39/100).
design
In the "design" category, the Vivo Y77 (China) significantly outperforms the Redmi 15 4G (57/100 vs 20/100).
value for money
In the "value for money" category, the Redmi 15 4G significantly outperforms the Vivo Y77 (China) (100/100 vs 55/100).
Which is better: the Redmi 15 4G or the Vivo Y77 (China)?
The Redmi 15 4G edges out the Vivo Y77 (China) by just 3 points — the two devices are very close in overall level.
What is the rating of the Redmi 15 4G and the Vivo Y77 (China)?
The Redmi 15 4G has a MobileRank rating of 32/100, the Vivo Y77 (China) — 29/100.
Should you choose the Redmi 15 4G over the Vivo Y77 (China)?
The Redmi 15 4G is a better fit for budget-conscious buyers. The Vivo Y77 (China) is a better fit for everyday use.