The initial application settings allow calls to be made to unknown contacts from the watch and allow use of the phone dialer. This is because it is not possible to set these restrictions for a watch that has not been added to the application.
If you want to restrict these functions, follow the steps below in the application:
Block calls from unknown numbers. In the app, tap “More”, find the “Block unknown numbers” option in the menu, and enable the restriction.
Disable dialing numbers via the phone dialer. In the app, tap “More”, find “Watch settings” (Device settings) in the menu, then tap Dialer and disable permission to use the phone dialer.