9900 on TMo with 7.1 - Wifi calling did not work while out of country

I just returned from a cruise to the Caribbean. Stopped in Jamaica and Mexico. I was able to connect to open Wifi while in both countries and had no trouble surfing, etc. However I switched my phone to Wifi calling only and the radio wouldn't connect to Wifi calling. It stayed on "OFF". I also tried Wifi preferred and that did not work either.

I tried one Wifi hotspot in Jamaica (at a restaurant that advertises Wifi for guests) and two in Mexico (one at a restaurant and another at a hotel).

Sure its possible their connection was not sufficient to allow the handshake, but I'm suspecting this new Wifi calling may have some additional limitations over UMA.

Previously I never had trouble using UMA on my 8900 while out of country to call back home for FREE. Have those days ended?

If this shall be thing of the past then it is bad news. I guess I will be carrying my 9700 still when I travel overseas. Did you have a chance to try SMS? SMS on WiFi on TMO is free overseas too.

Not sure about SMS. I did send a few, but I'm not sure if I was on wifi at the time.

I had no trouble with downloading VVM and browsing web while on wifi.

Try again on an official release. ; )