Originally Posted by
username
I have a stupid question - I see this kind of answered on the Internet but still don't quite understand it.
iPhone with US SIM with Wifi Calling enabled + data eSIM.
Goal: not accidentally use the US SIM when overseas for either data and call/text.
I know I can turn off Data on the US SIM. However, what I don't understand is how to make the call / text portion to only stay on Wifi calling (or data via eSIM). I end up disabling the line since that would be the safest. However, that means no Wifi Calling/Testing unless I am on Wifi and disable cellular completely.
Is there a way to keep the line on and not have it going to cellular at all? I don't see an option to disable roaming for voice/text. Googling shows:
https://support.apple.com/en-ca/HT201299
Turn Voice Roaming on or off: With CDMA networks, you can turn off Voice Roaming to avoid charges from using other carriers' networks.
Thanks.
When in the US, the simplest solution to this situation is to select the US "First Responder" network provided by AT&T. It will appear along with the common carriers under Settings-Cellular-Line-Network Selection-Auto Off, as: 313 100. It is set aside for only emergency services such as fire, police, ambulance, etc. I suspect 99.9%+ of us have no access to that network.