colossal888

fido: wifi calling

If you're travelling outside of Canada and using Wi-Fi Calling, all the messages and calls you receive (from anywhere in the world) will be taken from your plan's voice minutes and messaging limits. Same goes for all messages and calls you make or send to a Canadian number. In either case, you won’t incur long distance or roaming charges.

GaborBon

Yes, you should be able to make the calls over wifi.  you can do it without the HH, too, however.  Without the HH minutes are deducted from your minute plan.  With the HH minutes are unlimited.  I read that if you call back to the states using wifi there is no charge.  However if you call to an internation number then you still get charged the long distance, just not the roaming.