I don’t think you can have a Canadian number on Google Fi, so anyone with a Canadian number calling you would be making international calls, which would be subject to the pricing on their plans.
You are not logged in. However you can subscribe from another Fediverse account, for example Lemmy or Mastodon. To do this, paste the following into the search field of your instance: !canada@lemmy.ca
A Google Fi plan with unlimited North American roaming is like 20USD on a multi-line plan…
I don’t think you can have a Canadian number on Google Fi, so anyone with a Canadian number calling you would be making international calls, which would be subject to the pricing on their plans.
You could also use it as a data SIM and have a Canadian number only for calls.