Since we're on the subject of poor communications coverage out in the boonies, anywhere northwest of Dawson Creek in BC and anywhere in the Yukon is either Telus (sparse) or Bell (better) and Rogers(nothing) all the way to the Alcan border. We learned that in 2016 on our way to Alaska. We stopped in Whitehorse and bought a Virgin Mobile (Bell) SIM card to give us a phone number from a Telus shop in the same parking lot that houses the Starbucks and CTC and Walmart. Never used it, but it was better than nothing if we needed to. Not that there were a plethora of cell towers along the route, mind, but again, better than nothing. A CB radio would have been more useful to ask for help from passing trucks, if any of them still had them.
Also, back then, "free wifi" in Whitehorse at the usual suspects was limited by their individual wifi plans. The McDonald's, Starbucks, etc. did NOT have unlimited plans, and so when their monthly limited plans ran out, they were severely throttled back and their customers were SOL. Also learned that in 2016, same trip. Apparently, there were no "unlimited full throttle commercial internet plans" available to any businesses in the Yukon back then, so we were told.
If any Admins want to cut this post out into a separate thread, by all means. Perhaps things have changed up there, since?