I added my new Apple Watch model 6 to the plan as a shared device with my iPhone, for $10 monthly fee plus the setup charge. I can call and text using the watch—but only when my iPhone is nearby. I want to make calls and texts when away from the iPhone. But when I try to do so, the attempts fail and I receive a notification that the watch is not identified to a cellular plan. (I have a 5Gig monthly plan for the iPhone, which I understood could be used, that is to say, shared, with my iPhone.). What do I have to do to get the ability to use my Apple Watch away from the iPhone? The help desk person who set me up on this tonight said it was ready to go, but when I tested it away from the iPhone it fails.