Is my old phone compatible?

I use kimovil's checker for stuff like this: https://www.kimovil.com/en/where-to-buy-huawei-p20-pro

Here's this phone, as as you can see, it's compatible on the 4G band used, so won't be an issue.

Most phones sold in canada are at least cross-compatible with other carriers, if if they don't 100% share the same bands.