LG Watch Urbane™ 2nd Edition LTE - View Phone Number
From the Home screen, swipe left to display the menu.
Tap Settings .
Tap Cellular .
Tap SIM status.
View the Phone number.
The number listed is the watch's (used for data service) and not your companion smartphone's number (used for voice service).
Your companion smartphone's phone number is typically viewed by navigating: Apps icon > Settings > About phone then tapping Status or SIM status. It can't be viewed from the watch's display and can only be viewed from the smartphone.