The only way this will be fixed is if everyone contacts Fizz either through chat or the contact form in your account.
On my chat today the answer was "I know there are more customers experiencing the same issue, but for now it hasn't been declared as an incident."
And this is what Fizz told me to do:
Can you please check if you have the Fizz carrier 36.0.1 installed also while connected to the wi-fi? Can you please make a manual network search and switch to Fizz EXT and after a few minutes switch back to Fizz? If the issue persists, can you please try enabling airplane mode for 30 seconds and after disable it?
And their explanation of the issue:
As the issue that you specified is not constant can be due to the fact that the coverage is not adequate in some places, therefore, I kindly invite you to have a look at our FAQ about this subject on the following link: https://fizz.ca/en/faq/what-can-i-do-if-mobile-network-coverage-is-weak-or-inaccessible
It looks like you're new here. If you want to get involved, click one of these buttons!