You need the cellular version of the gear s3 for DIGITS. It allows for the same number to be on the watch as one of your other numbers so that when it's disconnected from the watch it acts independently.
This thread was the product of our fantastic collaborators during DIGITS Beta! As many terms have changed and bugs have been exterminated since the Beta launched, the information here may no longer be accurate. If you still have a question, please search our active threads or ask a new question in the DIGITS space!