Fido

OK, so WHICH smart watches do you support?  This is not clear from the thread.  The Apple Watch 3 series has a cellular version.  If this takes a SIM card, wouldn't it work? 

Can you explain how EXACTLY we get a smartwatch that we buy from Apple, then hook it up to our existing Fido account?  I'm happy to do this, as I don't want to switch carriers, but I will have to switch to Telus or Bell in order to use a smartwatch w...