Xiaomi Mi Watch (China) vs vivo Y21s

Xiaomi Mi Watch (China)

vivo Y21s

Network
2G network

GSM 850, 900, 1800, 1900

GSM 850, 900, 1800, 1900
3G network

HSDPA 850, 900, 1900

HSDPA 850, 900, 1700(AWS), 1900, 2100
4G network

LTE frequency band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 18(800), 19(800), 20(800), 26(850), 39(1900), 40(2300), 41(2500)

LTE frequency band 1, 2, 3, 4, 5, 7, 8, 20, 28, 38, 40, 41, 66; 1, 3, 5, 8, 40
HSDPA speed

-

42.2 Mbps
HSUPA speed

-

5.76 Mbps
EV-DO speed

-

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

-

LTE, Cat4, 150 Mbps download, 51 Mbps upload
GPRS

-

Yes
EDGE

-

Yes

Connectivity
WLAN

Wi-Fi 802.11b, 802.11g, 802.11n

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

-

Yes
WLAN WiFi Direct

-

Yes
WLAN WiFi Dual Band

-

Yes
USB

No

Type-C 2.0
USB On-The-Go

-

Yes
Bluetooth

v4.2

v5.0
Bluetooth A2DP

Yes

Yes
bluetooth LE

Yes

Yes
NFC

Yes

Yes (market dependent)
GPS

Yes, with A-GPS

Yes, with A-GPS
GLONASS

Yes

Yes
GALILEO

-

Yes
BDS

Yes

Yes

Features
Sensors

Accelerometer, barometer, gyro, heart rate

Accelerometer, compass, fingerprint, proximity

Main camera
Camera type

-

Triple
Main camera

(wide) , 50 MP, f/1.8 , 24 mm
(macro) , 2 MP, f/2.4
(depth) , 2 MP, f/2.4
Primary camera video

-

1080p@30fps
Primary camera flash

-

LED flash
Camera features

-

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