You should be able to use your phone from Canada here on a different provider, you may have to change some network settings, but they can do that in shop for you.
that's what I did with my phone from overseas anyway.
You should be able to use your phone (if its android) from Canada here on a different provider, you may have to change some network settings, but they can do that in shop for you.
Not sure about iOS.. Heard it's a problem child.