Vivo iQOO Z6 (China) vs Vivo Y21d

The Vivo iQOO Z6 (China) (2022) runs on the Qualcomm Snapdragon 778G+ 5G, while the Vivo Y21d (2025) runs on the Unisoc T7225. By overall MobileRank rating, the Vivo iQOO Z6 (China) leads — 31/100 vs 27/100 (a 4-point difference). Key differences: the Vivo Y21d has the bigger battery (6500 mAh vs 4500); the main camera is 64 MP vs 50 MP; the Vivo iQOO Z6 (China) has NFC for contactless payments, the Vivo Y21d doesn't; the Vivo iQOO Z6 (China) is noticeably lighter (194g vs 209g).

The Vivo iQOO Z6 (China) edges out the Vivo Y21d by just 4 points — the two devices are very close in overall level.
Profile comparison
Category scores
Vivo iQOO Z6 (China)
Performance 0
Display 100
Camera 34
Battery 39
Design 57
Value for money 55
Vivo Y21d
Performance 0
Display 50
Camera 24
Battery 54
Design 38
Value for money 100
What makes Vivo iQOO Z6 (China) better?
  • Faster charging: 80W vs 44W
  • Better main camera: 64MP vs 50MP
  • Higher refresh rate: 120Hz vs 90Hz
  • Lighter: 194g vs 209g

  • Better camera (34/100 vs 24/100)
  • Better display (100/100 vs 50/100)
  • Better design/ergonomics (57/100 vs 38/100)
What makes Vivo Y21d better?
  • Bigger battery: 6500 vs 4500 mAh

  • Longer battery life (54/100 vs 39/100)
  • Better value for money (100/100 vs 55/100)
Comparison verdict

Comparing the Vivo iQOO Z6 (China) vs the Vivo Y21d, the Vivo iQOO Z6 (China) scores 4 points higher (31/100 vs 27/100). In the "camera" category, the Vivo iQOO Z6 (China) leads (34/100 vs 24/100). In the "battery" category, the Vivo Y21d leads (54/100 vs 39/100). In the "value for money" category, the Vivo Y21d leads (100/100 vs 55/100). In the "performance" category, both devices are on the same level — 0/100. In the "display" category, the Vivo iQOO Z6 (China) significantly outperforms the Vivo Y21d (100/100 vs 50/100). In the "camera" category, the Vivo iQOO Z6 (China) is a bit better (34/100 vs 24/100). In the "battery" category, the Vivo Y21d notably outperforms the Vivo iQOO Z6 (China) (54/100 vs 39/100). In the "design" category, the Vivo iQOO Z6 (China) notably outperforms the Vivo Y21d (57/100 vs 38/100). In the "value for money" category, the Vivo Y21d significantly outperforms the Vivo iQOO Z6 (China) (100/100 vs 55/100).

Vivo iQOO Z6 (China): The Vivo iQOO Z6 (China) is a better fit for everyday use.
Vivo Y21d: The Vivo Y21d is a better fit for budget-conscious buyers.
Specs comparison
Specification Vivo iQOO Z6 (China) Vivo Y21d
Processor Qualcomm Snapdragon 778G+ 5G Unisoc T7225
AnTuTu 300000
Geekbench Single 580
Geekbench Multi 1750
Display 6.6" IPS LCD 6.7" IPS LCD
Resolution 1080x2388 720x1608
Refresh rate 120 Hz 90 Hz
Battery 4500 mAh 6500 mAh
Charging 80W 44W
Main camera 64 MP 50 MP
Front camera 8 MP 5 MP
RAM 8GB / 12GB 4GB / 6GB / 8GB
Storage 128GB / 256GB 128GB / 256GB
OS Android 12, Origin OS Ocean Android 15
Brightness (peak) 650 nits 1000 nits
NFC yes no
Protection IP68/IP69
Dimensions 164.0×75.8×8.6 mm 166.1×77.0×8.4 mm
Weight 194 g 209 g
Price $110
Camera comparison
Vivo iQOO Z6 (China)
  • Main: 64MP f/f/1.8
  • Front: 8MP
34
camera
Vivo Y21d
  • Main: 50MP f/f/1.8
  • Front: 5MP
24
camera
Display comparison
Vivo iQOO Z6 (China)
  • 6.6" IPS LCD
  • Resolution: 1080x2388
  • Refresh rate: 120 Hz
100
display
Vivo Y21d
  • 6.7" IPS LCD
  • Resolution: 720x1608
  • Refresh rate: 90 Hz
50
display
Battery and charging
Vivo iQOO Z6 (China)
  • 4500 mAh
  • Wired: 80W
  • No wireless charging
39
battery
Vivo Y21d
  • 6500 mAh
  • Wired: 44W
  • No wireless charging
54
battery
Benchmarks
Price and availability
Vivo iQOO Z6 (China)
Price unknown
Vivo Y21d
$110
Detailed category analysis
performance

In the "performance" category, both devices are on the same level — 0/100.

display

In the "display" category, the Vivo iQOO Z6 (China) significantly outperforms the Vivo Y21d (100/100 vs 50/100).

camera

In the "camera" category, the Vivo iQOO Z6 (China) is a bit better (34/100 vs 24/100).

battery

In the "battery" category, the Vivo Y21d notably outperforms the Vivo iQOO Z6 (China) (54/100 vs 39/100).

design

In the "design" category, the Vivo iQOO Z6 (China) notably outperforms the Vivo Y21d (57/100 vs 38/100).

value for money

In the "value for money" category, the Vivo Y21d significantly outperforms the Vivo iQOO Z6 (China) (100/100 vs 55/100).

Frequently asked questions
Which is better: the Vivo iQOO Z6 (China) or the Vivo Y21d?

The Vivo iQOO Z6 (China) edges out the Vivo Y21d by just 4 points — the two devices are very close in overall level.

What is the rating of the Vivo iQOO Z6 (China) and the Vivo Y21d?

The Vivo iQOO Z6 (China) has a MobileRank rating of 31/100, the Vivo Y21d — 27/100.

Which has the better camera: the Vivo iQOO Z6 (China) or the Vivo Y21d?

The Vivo iQOO Z6 (China) leads on camera score (34/100 vs 24/100).

Should you choose the Vivo iQOO Z6 (China) over the Vivo Y21d?

The Vivo iQOO Z6 (China) is a better fit for everyday use. The Vivo Y21d is a better fit for budget-conscious buyers.