My thermostat occasionally reboots in some kind of recovery mode where it asks me to use the iOS app to configure it. So the use case would be reconfiguring it

My thermostat occasionally reboots in some kind of recovery mode where it asks me to use the iOS app to configure it. So the use case would be reconfiguring it so I can call for heat in a blizzard. (I know which wire needs 24v to cut the thermostat out of the equation and talk directly to the furnace, but I'm sure there are cases where such a workaround isn't available.) There are some replacement parts lying around, so I anticipate that certain areas (the cities) will have power restored in weeks. It's figuring out how to fabricate new parts that will take years. Plus, some have solar panels. So power will likely be available for certain users well before long distance connectivity is restored. My solar panel inverter is also configured with an app that I would have a hard time coming by without internet (it's supposed to be a dealer only thing but I got them to set me up). It's an increasingly relevant part of the stack for things that are more important than cat videos.