OK so the system is now live. You should get a pop up asking if you'd like to update the carrier settings. Click Yes
Then you go back to your watch app and 'setup cellular' is active. I was able to get all the way to the 911 address screen but for some reason the 'continue' button is greyed out even when I enter my full address. So not sure what's going on with that. But I was able to get like 2 steps from the finish lol
Apple Watch - must SIM be in iPhone?
I was wondering if once the watch set up, does the SIM must be in iPhone?
It does work when phone is off.
After trying for the past 24 hours to make this work, I finally got connected this afternoon. I contacted support to try and track down if it was any of the issues reported here. The first rep I got was useless - didn't even understand what I meant when I said the button was greyed out. The second though was quite helpful. She discovered the account needed updated credit information. She processed that but it still didn't work. A third rep a few hours later recommended I try resetting my network settings on my phone (Tap Settings > General > Reset > Reset Network Settings). Once I did that I could finally click the button and never ran into any of the other error codes people are referencing here.
1. Credit information needed to be updated through rep.
2. Had to reset network settings once that was done.
I activated 2 watches--one went thru fine without a hitch, the other I thought did as well but turns out the cellular data would not activate. I went thru tech support and they told me to unlink the watch and re-do the process and now it created 2 numbers and plans and then bounced me out with the WS300 error afterward 😕
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