Vivo iQOO Z6 (China) vs Vivo Y51

The Vivo iQOO Z6 (China) (2022) runs on the Qualcomm Snapdragon 778G+ 5G, while the Vivo Y51 (2020) runs on the Qualcomm Snapdragon 665. By overall MobileRank rating, the Vivo iQOO Z6 (China) leads — 31/100 vs 18/100 (a 13-point difference). Key differences: the Vivo Y51 has the bigger battery (5000 mAh vs 4500); the main camera is 64 MP vs 48 MP; the Vivo iQOO Z6 (China) has NFC for contactless payments, the Vivo Y51 doesn't.

The Vivo iQOO Z6 (China) is noticeably better than the Vivo Y51 — the overall rating gap is 13 points.
Profile comparison
Category scores
Vivo iQOO Z6 (China)
Performance 0
Display 100
Camera 34
Battery 39
Design 57
Value for money 55
Vivo Y51
Performance 0
Display 0
Camera 29
Battery 36
Design 67
Value for money 55
What makes Vivo iQOO Z6 (China) better?
  • Faster charging: 80W vs 18W
  • Better main camera: 64MP vs 48MP

  • Better camera (34/100 vs 29/100)
  • Longer battery life (39/100 vs 36/100)
  • Better display (100/100 vs 0/100)
What makes Vivo Y51 better?
  • Bigger battery: 5000 vs 4500 mAh
  • Lighter: 186g vs 194g

  • Better design/ergonomics (67/100 vs 57/100)
Comparison verdict

Comparing the Vivo iQOO Z6 (China) vs the Vivo Y51, the Vivo iQOO Z6 (China) scores 13 points higher (31/100 vs 18/100). 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 Y51 (100/100 vs 0/100). In the "camera" category, the Vivo iQOO Z6 (China) is a bit better (34/100 vs 29/100). In the "battery" category, the Vivo iQOO Z6 (China) and the Vivo Y51 are nearly equal (39/100 vs 36/100). In the "design" category, the Vivo Y51 is a bit better (67/100 vs 57/100). In the "value for money" category, both devices are on the same level — 55/100.

Vivo iQOO Z6 (China): The Vivo iQOO Z6 (China) is a better fit for everyday use.
Vivo Y51: The Vivo Y51 is a better fit for everyday use.
Specs comparison
Specification Vivo iQOO Z6 (China) Vivo Y51
Processor Qualcomm Snapdragon 778G+ 5G Qualcomm Snapdragon 665
AnTuTu 329457
Geekbench Single 321
Geekbench Multi 1128
Display 6.6" IPS LCD 6.4" Super AMOLED
Resolution 1080x2388 1080x2340
Refresh rate 120 Hz
Battery 4500 mAh 5000 mAh
Charging 80W 18W
Main camera 64 MP 48 MP
Ultrawide 0 MP 8 MP
Front camera 8 MP 16 MP
RAM 8GB / 12GB 8GB
Storage 128GB / 256GB 128GB
OS Android 12, Origin OS Ocean Android 10, Funtouch 10
Brightness (peak) 650 nits
NFC yes no
Dimensions 164.0×75.8×8.6 mm 159.3×75.2×8.7 mm
Weight 194 g 186 g
Price
Camera comparison
Vivo iQOO Z6 (China)
  • Main: 64MP f/f/1.8
  • Front: 8MP
34
camera
Vivo Y51
  • Main: 48MP f/f/1.8
  • Ultrawide: 8MP
  • Front: 16MP
29
camera
Display comparison
Vivo iQOO Z6 (China)
  • 6.6" IPS LCD
  • Resolution: 1080x2388
  • Refresh rate: 120 Hz
100
display
Vivo Y51
  • 6.4" Super AMOLED
  • Resolution: 1080x2340
  • Refresh rate: —
0
display
Battery and charging
Vivo iQOO Z6 (China)
  • 4500 mAh
  • Wired: 80W
  • No wireless charging
39
battery
Vivo Y51
  • 5000 mAh
  • Wired: 18W
  • No wireless charging
36
battery
Benchmarks
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 Y51 (100/100 vs 0/100).

camera

In the "camera" category, the Vivo iQOO Z6 (China) is a bit better (34/100 vs 29/100).

battery

In the "battery" category, the Vivo iQOO Z6 (China) and the Vivo Y51 are nearly equal (39/100 vs 36/100).

design

In the "design" category, the Vivo Y51 is a bit better (67/100 vs 57/100).

value for money

In the "value for money" category, both devices are on the same level — 55/100.

Frequently asked questions
Which is better: the Vivo iQOO Z6 (China) or the Vivo Y51?

The Vivo iQOO Z6 (China) is noticeably better than the Vivo Y51 — the overall rating gap is 13 points.

What is the rating of the Vivo iQOO Z6 (China) and the Vivo Y51?

The Vivo iQOO Z6 (China) has a MobileRank rating of 31/100, the Vivo Y51 — 18/100.

Which has the better camera: the Vivo iQOO Z6 (China) or the Vivo Y51?

The Vivo iQOO Z6 (China) leads on camera score (34/100 vs 29/100).

Should you choose the Vivo iQOO Z6 (China) over the Vivo Y51?

The Vivo iQOO Z6 (China) is a better fit for everyday use. The Vivo Y51 is a better fit for everyday use.