I don't use a smartphone doe.

Though I do carry my corebooted thinkpad t440p running trisquel in my leather backpack I take almost everywhere I go. There's 6 places in my small town I can leech excellent wifi at once I get into town for to check my email or bank if I need to in my backpack or save map directions, I also keep a road atlas in my backpack.

I have a burner 4G nokia for SMS and calling my family with good2GO that I have the battery removed in a plastic ziplock baggy but I rarely use it but once a day at home.

In general I dislike calling because its recorded, SMS is tracked and phone companies know where you go so I keep it off.

https://youtu.be/v9B8y-AAdmA