Has anyone tried to use their Apple Watch Cellular on roaming abroad on same plan? I know Apple says no roaming is allowed. However when I talked to T-Mobile, they said that roaming is a carrier function and if you have T-Mobile One on your base phone, (the phone to which the Apple Watch Cellular plan is attached), you should be able to use the Apple Watch Cellular abroad.

Interesting. Has anyone tried to use the Apple Watch Cellular abroad? Of course the base plan on watch should have been activated in the country you purchased the watch.