Just to share my experience in case this happens to anybody else. In the attempt to unpair an old Apple Watch S0 from my phone I erroneously unpaired my current S3 LTE. When I realized it, I was quite annoyed because of the need to re-pair the watch etc, but what I did not expect was that my VZ cellular plan got deactivated as well in the moment the watch got un-paired. After I re-paired the watch I realized LTE was not working. I could still see the device number share in my VZ account but it was inactive. I could not reactivate it via the watch app pn the phone either. I had to call Verizon customer service and have them add it on their end and then re-run the activation in the watch app on the phone.
One hour later all is running again. Good service experience through Verizon btw.
One hour later all is running again. Good service experience through Verizon btw.