Wifi Calling Abroad

[Jlm234]

So in less than a month I'll be leaving the good ol' US of A and living for 4 months in Ireland. While there I plan to get a second local phone number on a short-term contract, and I have an older iPhone I want to use on that network.
I just discovered AT&T's WiFi Calling for iCloud devices, and I was wondering if I leave my US iPhone connected to wifi 24/7 with WiFi calling activated, will I be able to make/receive calls on my Irish iPhone from my US number?

I realize it's a weird situation and I'm not sure if I worded it in a way that's easily understood, so if you have questions or want more details please ask. Any help here would be appreciated!

 

[Gav2k]

I’ve just returned from Iceland and was roaming over there. Wi-Fi calling wasn’t available.

Side note, there isn’t short term contracts over here in the U.K. and Ireland. It’s a choice of pay as you go, 1 month rolling, 12,18 and 24 month.

 

[Jlm234]

I’ve just returned from Iceland and was roaming over there. Wi-Fi calling wasn’t available.

Side note, there isn’t short term contracts over here in the U.K. and Ireland. It’s a choice of pay as you go, 1 month rolling, 12,18 and 24 month.

I've seen Vodafone Ireland advertise 30 day contracts for Sim cards, for 30€ per month (gets you 5GB of data plus unlimited talk/text to Irish numbers)

 

[Gav2k]

I've seen Vodafone Ireland advertise 30 day contracts for Sim cards, for 30€ per month (gets you 5GB of data plus unlimited talk/text to Irish numbers)

Yes that’s a 1 month rolling contract