In a worst case scenario: US Invasion. What device could the US government simply force to stop working in Canada that would cause the most chaos (e.g: brick all iPhones)?
What products are most at risk. What are easiest to replace to reduce risk? Hardest to replace?
Internet, GPS, Electricity.
Consider getting FRS, or go full-route and get your HAM license and a handheld.
Consider LoRa-based Meshtastic devices (Lilygo T-Deck) - good for text communications, am unsure if they are dependent on GPS for their mesh capabilities though.
Sat up last night thinking about Mesh comms for the average Canadian who aren't likely going to be running out to buy new products. As a back-up, I have Briar for groups and Bluetooth chat for 1-on-1, but wondering if there are any recommendations you or others may have that are 1) better and 2) a Canadian solution?