Redmi K40 vs Vivo iQOO Z6 (China)

The Redmi K40 (2021) runs on the Qualcomm Snapdragon 870, while the Vivo iQOO Z6 (China) (2022) runs on the Qualcomm Snapdragon 778G+ 5G. By overall MobileRank rating, the Redmi K40 leads — 34/100 vs 31/100 (a 3-point difference). Key differences: the Redmi K40 has the bigger battery (4520 mAh vs 4500); the main camera is 48 MP vs 64 MP.

The Redmi K40 edges out the Vivo iQOO Z6 (China) by just 3 points — the two devices are very close in overall level.
Profile comparison
Category scores
Redmi K40
Performance 8
Display 100
Camera 31
Battery 28
Design 55
Value for money 89
Vivo iQOO Z6 (China)
Performance 0
Display 100
Camera 34
Battery 39
Design 57
Value for money 55
What makes Redmi K40 better?
  • Bigger battery: 4520 vs 4500 mAh

  • Higher performance (8/100 vs 0/100)
  • Better value for money (89/100 vs 55/100)
What makes Vivo iQOO Z6 (China) better?
  • Faster charging: 80W vs 33W
  • Better main camera: 64MP vs 48MP
  • Lighter: 194g vs 196g

  • Better camera (34/100 vs 31/100)
  • Longer battery life (39/100 vs 28/100)
  • Better design/ergonomics (57/100 vs 55/100)
Comparison verdict

Comparing the Redmi K40 vs the Vivo iQOO Z6 (China), the Redmi K40 scores 3 points higher (34/100 vs 31/100). In the "battery" category, the Vivo iQOO Z6 (China) leads (39/100 vs 28/100). In the "value for money" category, the Redmi K40 leads (89/100 vs 55/100). In the "performance" category, the Redmi K40 is a bit better (8/100 vs 0/100). In the "display" category, both devices are on the same level — 100/100. In the "camera" category, the Vivo iQOO Z6 (China) and the Redmi K40 are nearly equal (34/100 vs 31/100). In the "battery" category, the Vivo iQOO Z6 (China) is a bit better (39/100 vs 28/100). In the "design" category, the Vivo iQOO Z6 (China) and the Redmi K40 are nearly equal (57/100 vs 55/100). In the "value for money" category, the Redmi K40 significantly outperforms the Vivo iQOO Z6 (China) (89/100 vs 55/100).

Redmi K40: The Redmi K40 is a better fit for budget-conscious buyers.
Vivo iQOO Z6 (China): The Vivo iQOO Z6 (China) is a better fit for everyday use.
Specs comparison
Specification Redmi K40 Vivo iQOO Z6 (China)
Processor Qualcomm Snapdragon 870 Qualcomm Snapdragon 778G+ 5G
AnTuTu 1010069
Geekbench Single 1298
Geekbench Multi 3520
Display 6.7" AMOLED 6.6" IPS LCD
Resolution 2400x1080 1080x2388
Refresh rate 120 Hz 120 Hz
Battery 4520 mAh 4500 mAh
Charging 33W 80W
Main camera 48 MP 64 MP
Ultrawide 8 MP 0 MP
Front camera 20 MP 8 MP
RAM 6GB / 8GB / 12GB 8GB / 12GB
Storage 128GB / 256GB 128GB / 256GB
OS Android 11 Android 12, Origin OS Ocean
Brightness (peak) 650 nits
NFC yes
Dimensions 164.0×75.8×8.6 mm
Weight 196 g 194 g
Price $309
Camera comparison
Redmi K40
  • Main: 48MP f/1.79
  • Ultrawide: 8MP
  • Front: 20MP
31
camera
Vivo iQOO Z6 (China)
  • Main: 64MP f/f/1.8
  • Front: 8MP
34
camera
Display comparison
Redmi K40
  • 6.7" AMOLED
  • Resolution: 2400x1080
  • Refresh rate: 120 Hz
100
display
Vivo iQOO Z6 (China)
  • 6.6" IPS LCD
  • Resolution: 1080x2388
  • Refresh rate: 120 Hz
100
display
Battery and charging
Redmi K40
  • 4520 mAh
  • Wired: 33W
  • No wireless charging
28
battery
Vivo iQOO Z6 (China)
  • 4500 mAh
  • Wired: 80W
  • No wireless charging
39
battery
Benchmarks
Price and availability
Redmi K40
$309
Vivo iQOO Z6 (China)
Price unknown
Detailed category analysis
performance

In the "performance" category, the Redmi K40 is a bit better (8/100 vs 0/100).

display

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

camera

In the "camera" category, the Vivo iQOO Z6 (China) and the Redmi K40 are nearly equal (34/100 vs 31/100).

battery

In the "battery" category, the Vivo iQOO Z6 (China) is a bit better (39/100 vs 28/100).

design

In the "design" category, the Vivo iQOO Z6 (China) and the Redmi K40 are nearly equal (57/100 vs 55/100).

value for money

In the "value for money" category, the Redmi K40 significantly outperforms the Vivo iQOO Z6 (China) (89/100 vs 55/100).

Frequently asked questions
Which is better: the Redmi K40 or the Vivo iQOO Z6 (China)?

The Redmi K40 edges out the Vivo iQOO Z6 (China) by just 3 points — the two devices are very close in overall level.

What is the rating of the Redmi K40 and the Vivo iQOO Z6 (China)?

The Redmi K40 has a MobileRank rating of 34/100, the Vivo iQOO Z6 (China) — 31/100.

Which is more powerful: the Redmi K40 or the Vivo iQOO Z6 (China)?

The Redmi K40 leads on performance (8/100 vs 0/100).

Should you choose the Redmi K40 over the Vivo iQOO Z6 (China)?

The Redmi K40 is a better fit for budget-conscious buyers. The Vivo iQOO Z6 (China) is a better fit for everyday use.