Redmi K90 vs Vivo Y77 (China)

The Redmi K90 (2025) runs on the Qualcomm Snapdragon 8 Elite, while the Vivo Y77 (China) (2022) runs on the MediaTek Dimensity 930. By overall MobileRank rating, the Redmi K90 leads — 68/100 vs 29/100 (a 39-point difference). Key differences: the Redmi K90 has the bigger battery (7100 mAh vs 4500); the Redmi K90 has NFC for contactless payments, the Vivo Y77 (China) doesn't.

The Redmi K90 significantly outperforms the Vivo Y77 (China) by 39 points (68/100 vs 29/100).
Profile comparison
Category scores
Redmi K90
Performance 69
Display 100
Camera 53
Battery 71
Design 42
Value for money 82
Vivo Y77 (China)
Performance 0
Display 100
Camera 24
Battery 39
Design 57
Value for money 55
What makes Redmi K90 better?
  • Bigger battery: 7100 vs 4500 mAh
  • Faster charging: 100W vs 80W

  • Higher performance (69/100 vs 0/100)
  • Better camera (53/100 vs 24/100)
  • Longer battery life (71/100 vs 39/100)
  • Better value for money (82/100 vs 55/100)
What makes Vivo Y77 (China) better?
  • Lighter: 194g vs 206g

  • Better design/ergonomics (57/100 vs 42/100)
Comparison verdict

Comparing the Redmi K90 vs the Vivo Y77 (China), the Redmi K90 scores 39 points higher (68/100 vs 29/100). In the "performance" category, the Redmi K90 leads (69/100 vs 0/100). In the "camera" category, the Redmi K90 leads (53/100 vs 24/100). In the "battery" category, the Redmi K90 leads (71/100 vs 39/100). In the "value for money" category, the Redmi K90 leads (82/100 vs 55/100). In the "performance" category, the Redmi K90 significantly outperforms the Vivo Y77 (China) (69/100 vs 0/100). In the "display" category, both devices are on the same level — 100/100. In the "camera" category, the Redmi K90 notably outperforms the Vivo Y77 (China) (53/100 vs 24/100). In the "battery" category, the Redmi K90 significantly outperforms the Vivo Y77 (China) (71/100 vs 39/100). In the "design" category, the Vivo Y77 (China) notably outperforms the Redmi K90 (57/100 vs 42/100). In the "value for money" category, the Redmi K90 notably outperforms the Vivo Y77 (China) (82/100 vs 55/100).

Redmi K90: The Redmi K90 is a better fit for active users, budget-conscious buyers.
Vivo Y77 (China): The Vivo Y77 (China) is a better fit for everyday use.
Specs comparison
Specification Redmi K90 Vivo Y77 (China)
Processor Qualcomm Snapdragon 8 Elite MediaTek Dimensity 930
AnTuTu 3088357
Geekbench Single 3050
Geekbench Multi 9300
Display 6.6" AMOLED 6.6" IPS LCD
Resolution 2510x1156 1080x2388
Refresh rate 120 Hz 120 Hz
Battery 7100 mAh 4500 mAh
Charging 100W 80W
Main camera 50 MP 50 MP
Ultrawide 8 MP 0 MP
Telephoto 50 MP 0 MP
Front camera 20 MP 8 MP
RAM 12GB / 16GB 6GB / 8GB / 12GB
Storage 256GB / 512GB 128GB / 256GB
OS Android 16 Android 12, Origin OS Ocean
Brightness (peak) 3500 nits
NFC yes no
Protection IP68
Dimensions 157.5×75.3×8.0 mm 164.2×75.8×8.6 mm
Weight 206 g 194 g
Price $401
Camera comparison
Redmi K90
  • Main: 50MP f/f/1.9
  • Ultrawide: 8MP
  • Telephoto: 50MP
  • Front: 20MP
53
camera
Vivo Y77 (China)
  • Main: 50MP f/f/1.8
  • Front: 8MP
24
camera
Display comparison
Redmi K90
  • 6.6" AMOLED
  • Resolution: 2510x1156
  • Refresh rate: 120 Hz
100
display
Vivo Y77 (China)
  • 6.6" IPS LCD
  • Resolution: 1080x2388
  • Refresh rate: 120 Hz
100
display
Battery and charging
Redmi K90
  • 7100 mAh
  • Wired: 100W
  • No wireless charging
71
battery
Vivo Y77 (China)
  • 4500 mAh
  • Wired: 80W
  • No wireless charging
39
battery
Benchmarks
Price and availability
Redmi K90
$401
Vivo Y77 (China)
Price unknown
Detailed category analysis
performance

In the "performance" category, the Redmi K90 significantly outperforms the Vivo Y77 (China) (69/100 vs 0/100).

display

In the "display" category, both devices are on the same level — 100/100.

camera

In the "camera" category, the Redmi K90 notably outperforms the Vivo Y77 (China) (53/100 vs 24/100).

battery

In the "battery" category, the Redmi K90 significantly outperforms the Vivo Y77 (China) (71/100 vs 39/100).

design

In the "design" category, the Vivo Y77 (China) notably outperforms the Redmi K90 (57/100 vs 42/100).

value for money

In the "value for money" category, the Redmi K90 notably outperforms the Vivo Y77 (China) (82/100 vs 55/100).

Frequently asked questions
Which is better: the Redmi K90 or the Vivo Y77 (China)?

The Redmi K90 significantly outperforms the Vivo Y77 (China) by 39 points (68/100 vs 29/100).

What is the rating of the Redmi K90 and the Vivo Y77 (China)?

The Redmi K90 has a MobileRank rating of 68/100, the Vivo Y77 (China) — 29/100.

Which has the better camera: the Redmi K90 or the Vivo Y77 (China)?

The Redmi K90 leads on camera score (53/100 vs 24/100).

Which is more powerful: the Redmi K90 or the Vivo Y77 (China)?

The Redmi K90 leads on performance (69/100 vs 0/100).

Should you choose the Redmi K90 over the Vivo Y77 (China)?

The Redmi K90 is a better fit for active users, budget-conscious buyers. The Vivo Y77 (China) is a better fit for everyday use.