IMO, you should do yourself a favor and ask nothing (don’t waste your time), I’ll not even try to count reasons … first one: they don’t sell Librem 5, etc.
Furthermore, @epinez guidance/post here is important and related to Circuit Switched Fallback (CSFB):
Guaranteed or certified to work out-of-the-box within particular country … with particular TS provider … for example, for CSFB, I believe that TSPs in Germany will stick to/with 2G (GSM).
And, here is link to quality cross-comparison table for Canada: