I'm traveling to Ireland in a few days and this is the first time using dual SIM. Wondering if anyone can help confirm that iOS 13 beta will help my use case here:
My AT&T service is using the eSIM with no international plan. My phone will still roam abroad and connect to local networks, but charge me a ridiculous amount of money to call / text / use data.
I'm planning on getting a Vodafone sim when I arrive. This will be used for data, but I want my AT&T number still active for iMessage/Facetime/WiFi Calling/receiving SMS
Questions:
1) Can I use the Vodafone mobile data to route AT&T WiFi calls over? (the OP's first post makes me think this might be possible with iOS 13)
2) If I "Turn off this line" for AT&T, will my US number still be registered to iMessage?
3) I imagine having two SIMs registered will eat up extra battery. Should I manually select for AT&T to roam on Vodafone to help with battery so both SIMs are on the same carrier, or would that not matter?
Hopefully someone can shed some light into any of these cases