@gpatel-fr Owch. That doesn't sound like encouraging news about the database
For me, the plus is visible beneath the 0 in the dialer. A long press of the zero gives a plus sign.
Just to be clear, I had never tried to dial a plus sign before yesterday. I only tried it amongst a bunch of trial and error, testing to see what would trigger the phone number based predictions.
From what I read, yes, the + sign functions the same as the international call code, but I've never tried it. Could be region and/or carrier dependent.
One thing I find confusing is why, when set to either Canadian language, the tel_dom_fmt. Do you have any sense of what might be affected by this field? Our telephone standards here otherwise seem identical to USA, and it seems odd that the field should be empty when no others are.