But… back to the matter:
Combining SIM7100A with Bands and Canadian Networks results in
Bell Eastlink Freedom Ice Rogers SaskTel Telus Vidéotron
B2 1900 MHz x x
B4 1700 MHz x x x x x x x
B5 850 MHz x
B17 700 MHz x x x x x
No match with: ABC, Tbaytel, Xplornet. (and B7 would only add Tbaytel).
Overall, doesn’t look too bad to me 
Admittedly, I have no clue how popular each provider is, and how good the coverage of each frequency is. But I would also assume that theses providers also have peering agreements? (So, if no Bell tower can be found, Eastlink is used or something like that)