Asus Zenfone 7 ZS670KS vs vivo Y21G

Asus Zenfone 7 ZS670KS

vivo Y21G

Network
2G network

GSM 850, 900, 1800, 1900

GSM 850, 900, 1800, 1900
3G network

HSDPA 800, 850, 900, 1700(AWS), 1900, 2100

HSDPA 850, 900, 2100
4G network

LTE frequency band 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28, 29, 38, 39, 40, 41

LTE frequency band 1, 3, 5, 8, 38, 40, 41
5G network

5G band 1, 2, 3, 5, 7, 8, 12, 20, 28, 38, 77, 78; SA/NSA

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HSDPA speed

42.2 Mbps

42.2 Mbps
HSUPA speed

5.76 Mbps

5.76 Mbps
EV-DO speed

-

EV-DO Rev.A 3.1 Mbps download, 1.8 Mbps upload
LTE speed

LTE-A (5CA) Cat 19, 1800 Mbps download, 150 Mbps upload

LTE, Cat4, 150 Mbps download, 51 Mbps upload
5G speed

3.6 Gbps download

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GPRS

Yes

Yes
EDGE

Yes

Yes

Design
Build

Glass front (Gorilla Glass 6), glass back (Gorilla Glass 3), aluminum frame

Glass front, plastic frame, plastic back
SIM

Dual SIM (Nano-SIM, dual stand-by)

Dual SIM (Nano-SIM, dual stand-by)
Height

165.1 mm

164.3 mm
Width

77.3 mm

76.1 mm
Thickness

9.6 mm

8 mm
Weight

230 g

182 g
Colors

Black, White

Blue, Diamond Glow

Display
Display type

Super AMOLED capacitive touchscreen

IPS LCD
Physical size

6.67 inches

6.51 inches
Resolution

1080 x 2400 pixels

720 x 1600 pixels
Pixel density

395 ppi

270 ppi
Display colors

16777216

16777216
Protection

2.5D curved glass screen, Scratch resistant, Corning Gorilla Glass 6

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Display features

HDR10+, 90Hz refresh rate, 700 nits typ. brightness

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Main camera
Camera type

Triple

Dual
Main camera

64 MP, f/1.8 , 26 mm, 1/1.72" , 0.8 µm

13 MP, f/2.2 , (wide)
8 MP, f/2.4 , 80 mm, 3x optical zoom

2 MP, f/2.4 , (macro)
12 MP, f/2.2 , 17 mm, 1/2.55" , 1.4 µm
Primary camera resolution

9280 x 6920 pixels

4160 x 3120 pixels
Primary camera video

8K@30fps, 4K@30/60/120fps, 1080p@30/60/240fps, 720p@480fps; gyro-EIS, HDR

1080p@30fps
Primary camera flash

dual LED flash

LED flash
Camera features

Autofocus, continuous shooting, digital zoom, optical zoom, digital image stabilization, geotagging, panorama, HDR, touch focus, face detection, white balance settings, ISO settings, exposure compensation, self-timer, scene-mode, macro-mode, phase detection autofocus, laser autofocus, RAW

Autofocus, continuous shooting, digital zoom, digital image stabilization, geotagging, panorama, HDR, touch focus, face detection, white balance settings, ISO settings, exposure compensation, self-timer, scene-mode, macro-mode, phase detection autofocus

Connectivity
WLAN

Wi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11n 5GHz, 802.11ac, 802.11ax

Wi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11n 5Ghz, 802.11ac
WLAN WiFi Hotspot

Yes

Yes
WLAN WiFi Direct

Yes

Yes
WLAN WiFi Dual Band

Yes

Yes
USB

Type-C 1.0 reversible connector

Type-C 2.0
USB On-The-Go

Yes

Yes
Bluetooth

v5.0

v5.0
Bluetooth A2DP

Yes

Yes
bluetooth LE

Yes

Yes
Bluetooth AptX

aptX Adaptive

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NFC

Yes

No
GPS

Yes, with A-GPS

Yes, with A-GPS
GLONASS

Yes

Yes
GALILEO

Yes

Yes
Beidou

Yes

-
BDS

-

Yes
QZSS

Yes

-
NavIC

Yes

-