I can't think of a use case where a phone is or ever would be mandatory. I can walk into: - the banks I do business with and prefer this so they know my face.

I can't think of a use case where a phone is or ever would be mandatory. I can walk into: - the banks I do business with and prefer this so they know my face. This also allows most accounts to be set read-only from the internet and to set additional security on ACH transfers that require me to be physically in the bank. - the DMV/courthouse. - the power company. - the trash company, so I can pet their dog. - I can mail a cashiers check to the IRS, though it makes me uncomfortable to do so because there is no receipt beyond delivery and I just have to wait and see if they send me a letter, but it is still an option. It would be nice if the USPS had a kiosk for this. Anything else is entirely optional for me, or what some might call "nice to have". I do have the Mumla app so I can use my own self hosted uMurmur server but that is a nice to have. For driving in strange places I have a couple GPS map systems that I update at home and they just use GPS, no cell networks. I do have to remember to print out my proof of insurance and keep copies in the vehicle.