I travel from the US to Europe and back frequently and have a European carrier's eSIM in addition to my Verizon pSIM. I want to have all Verizon services blocked while out of the US so when out of the US they only work on WiFi or while using the foreign eSIM.
When this is working correctly my iPhone shows the carrier description of "VZW Using Cellular Data" (when not on WiFi). It seems like this gets reset whenever I return to the US.
How do I ask Verizon to reliably make this change? Can I do it through my account? Some Verizon reps are able to make this change, others think they are but the carrier description never changes after restarting the phone. TravelPass and Pay As You Go are removed from my line, and I have Wi-Fi Calling and Prefer Wi-Fi While Roaming enabled.