Redmi K40S vs Vivo Y77 (China)
The Redmi K40S (2022) runs on the Qualcomm Snapdragon 870 5G, while the Vivo Y77 (China) (2022) runs on the MediaTek Dimensity 930. By overall MobileRank rating, the Redmi K40S leads — 54/100 vs 45/100 (a 9-point difference). Key differences: the main camera is 48 MP vs 50 MP; the Redmi K40S is faster in AnTuTu (1,010,069 vs 593,307); the Redmi K40S has NFC for contactless payments, the Vivo Y77 (China) doesn't.
Profile comparison
Category scores
Redmi K40S
Vivo Y77 (China)
What makes Redmi K40S better?
- Higher AnTuTu: 1010069 vs 593307
- Better Geekbench Single: 1298 vs 915
- Better Geekbench Multi: 3520 vs 2299
- Higher performance (61/100 vs 47/100)
- Better camera (36/100 vs 30/100)
- Better display (79/100 vs 66/100)
- Better portability (65/100 vs 56/100)
What makes Vivo Y77 (China) better?
- Faster charging: 80W vs 67W
- Better main camera: 50MP vs 48MP
- Lighter: 194g vs 195g
- Longer battery life (45/100 vs 42/100)
Comparison verdict
Comparing the Redmi K40S vs the Vivo Y77 (China), the Redmi K40S scores 9 points higher (54/100 vs 45/100). In the "performance" category, the Redmi K40S leads (61/100 vs 47/100). In the "performance" category, the Redmi K40S is a bit better (61/100 vs 47/100). In the "display" category, the Redmi K40S is a bit better (79/100 vs 66/100). In the "camera" category, the Redmi K40S is a bit better (36/100 vs 30/100). In the "battery" category, the Vivo Y77 (China) and the Redmi K40S are nearly equal (45/100 vs 42/100). In the "portability" category, the Redmi K40S is a bit better (65/100 vs 56/100).
Specs comparison
| Specification | Redmi K40S | Vivo Y77 (China) | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 870 5G | MediaTek Dimensity 930 | |
| AnTuTu | 1010069 | 593307 | |
| Geekbench Single | 1298 | 915 | |
| Geekbench Multi | 3520 | 2299 | |
| Display | 6.7" AMOLED | 6.6" IPS LCD | |
| Resolution | 1080x2400 | 1080x2388 | |
| Refresh rate | 120 Hz | 120 Hz | |
| Battery | 4500 mAh | 4500 mAh | |
| Charging | 67W | 80W | |
| Main camera | 48 MP | 50 MP | |
| Ultrawide | 8 MP | 0 MP | |
| Front camera | 20 MP | 8 MP | |
| RAM | 6GB / 8GB / 12GB | 6GB / 8GB / 12GB | |
| Storage | 128GB / 256GB | 128GB / 256GB | |
| OS | Android 12, MIUI 13 | Android 12, Origin OS Ocean | |
| Brightness (peak) | 1300 nits | — | |
| NFC | yes | no | |
| Dimensions | 163.2×76.0×7.7 mm | 164.2×75.8×8.6 mm | |
| Weight | 195 g | 194 g | |
| Launch price | — | — |
Camera comparison
Redmi K40S
- Main: 48MP f/1.8
- Ultrawide: 8MP
- Front: 20MP
Vivo Y77 (China)
- Main: 50MP f/1.8
- Front: 8MP
Display comparison
Redmi K40S
- 6.7" AMOLED
- Resolution: 1080x2400
- Refresh rate: 120 Hz
Vivo Y77 (China)
- 6.6" IPS LCD
- Resolution: 1080x2388
- Refresh rate: 120 Hz
Battery and charging
Redmi K40S
- 4500 mAh
- Wired: 67W
- No wireless charging
Vivo Y77 (China)
- 4500 mAh
- Wired: 80W
- No wireless charging
Overall performance score
We compared Redmi K40S and Vivo Y77 (China), covering their specs and all relevant benchmarks.
Redmi K40S leads Vivo Y77 (China) by 70.2% in our overall performance rating.
Benchmarks
Detailed category analysis
performance
In the "performance" category, the Redmi K40S is a bit better (61/100 vs 47/100).
display
In the "display" category, the Redmi K40S is a bit better (79/100 vs 66/100).
camera
In the "camera" category, the Redmi K40S is a bit better (36/100 vs 30/100).
battery
In the "battery" category, the Vivo Y77 (China) and the Redmi K40S are nearly equal (45/100 vs 42/100).
portability
In the "portability" category, the Redmi K40S is a bit better (65/100 vs 56/100).
Frequently asked questions
Which is better: the Redmi K40S or the Vivo Y77 (China)?
The Redmi K40S edges out the Vivo Y77 (China) by just 9 points — the two devices are very close in overall level.
What is the rating of the Redmi K40S and the Vivo Y77 (China)?
The Redmi K40S has a MobileRank rating of 54/100, the Vivo Y77 (China) — 45/100.
Which has the better camera: the Redmi K40S or the Vivo Y77 (China)?
The Redmi K40S leads on camera score (36/100 vs 30/100).
Which is more powerful: the Redmi K40S or the Vivo Y77 (China)?
The Redmi K40S leads on performance (61/100 vs 47/100).
Should you choose the Redmi K40S over the Vivo Y77 (China)?
The Redmi K40S is a better fit for active users.