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!