I recently change my phone and I cannot change it in my profile (My Phone Menu)
the update should be done by itself via the system, but if it is late you can contact the customer service. You can do it by opening the following link: https://fizz.ca/en/faq/status-services and simply scroll down until you see the green bubble, than click on it to start your chat session with the customer service.
You can also do it on Facebook: https://facebook.com/fizzca.
-By private message on Twitter : https://mobile.twitter.com/fizz_ca
-Whatsapp : (438) 393-5814
Don't worry about the phone in your profile. This has no practical relevance for the usage! It really doesn't (I cleared that with support about a year ago).
It should be done automatically.
Wouldn't it be useful to have an accurate profile if it gets stolen/lost?
I agree but what I tried to say is that the function in your profile doesn't change. So even if the phone model is wrong in your profile you can still mark your simcard as lost or stolen and block it. That's what Fizz support told me last year