I am in Europe and trying to get my iPhone set-up to use this international feature and it looks like WiFi calling needs to be "on". I have received texts but wonder if I can send or call while abroad as the Visible information describing the Visible + plan refers to calling form the US. Any comments?
Visible only supports international calling to the US from Canada and Mexico (plus the USVI and Puerto Rico) on Visible+. International services from other countries require using WiFI or a local SIM (your device must be unlocked if obtained from Visible).
More detail is available at: https://www.visible.com/help/international-services