Xiaomi Mi Watch (China) vs vivo iQOO U3x 4G

Xiaomi Mi Watch (China)

vivo iQOO U3x 4G

Network
2G network

GSM 850, 900, 1800, 1900

GSM 850, 900, 1800, 1900; CDMA 800
3G network

HSDPA 850, 900, 1900

HSDPA 850, 900, 1900, 2100; CDMA2000 1x
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, 3, 5, 8, 34, 38, 39, 40, 41
HSDPA speed

-

42.2 Mbps
HSUPA speed

-

5.76 Mbps
LTE speed

-

LTE, 800 Mbps download, 210 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

microUSB 2.0
USB On-The-Go

-

Yes
Bluetooth

v4.2

v5.0
Bluetooth A2DP

Yes

Yes
bluetooth LE

Yes

Yes
Bluetooth AptX

-

aptX
NFC

Yes

No
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

-

Dual
Main camera

(wide) , 13 MP, f/2.2 , 4x digital zoom
(depth) , 2 MP, f/2.4
Primary camera resolution

-

4160 x 3120 pixels
Primary camera video

-

1080p@30fps
Primary camera flash

-

LED flash
Camera features

-

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