Answered question
I have LTE but it doesn't seems to transfer data. It's like a fake connection, totaly useless even if I turn on my cellular data. I don't understand why.
Did you configure APN parameters https://fizz.ca/en/faq/what-are-fizz-network-settings-apn
Did you verify if your phone is compatible with Fizz https://fizz.ca/en/faq/compatible-devices