I heard one of the Canadian carriers restricted Wi-Fi calling to only if your phone was connected to a Wi-Fi network in Canada (looked at outgoing IP), but I haven't heard of the US carriers doing anything like that.







Kodi nox

I have conflicting information comparing what Tmobile reps tell me and what I see on the T-mobile website. I am in Brazil connected to wifi and make a wifi call to the USA
1) Website says I wont be charged (I have an unlimited plan): (on tmobile website docs/DOC-1680#secondheading )
2) Tmobile rep says I WILL be charged unless in airplane mode with wifi turned back on before placing the call, even if it is clearly a "wifi call"
3) other users have told me I "may or may not" be charged

Here's what I see on my phone notification panel (I am physically in Brazil with T-mobile sim)
1) NOT in airplane mode, but wifi connected and wifi calling enabled
Tim 21 Wifi Calling - Claro BR
2) same as above except IN airplane mode with wifi turned back on
T-Mobile Wifi Calling - No Service

I can definitely make a wifi call either way. What bothers me (other than the tmobile rep comments) is that when not in airplane mode the foreign sim provider name (Tim 21) instead of "T-Mobile" in the wifi calling notification message. This strikes me as odd. does it have any material meaning regarding wifi calls?
Will I potentially be charged in scenario 1 above? never? sometimes? every time? if its a wifi call through a private wifi connection, why?

thanks in advance for any help!