I lived without a cell phone for about 3 years (2022-2025), and once in a while there was a small hurdle but overall it was surprisingly easy. 2FA can be done via text/email, I never ran into an instance where I needed an app. Every ticket I bought could be printed at home, so it takes a little more forethought but not a deal breaker.

These days I own a phone per request of one of my business clients, but it stays turned off at home unless I’m on a job. Once in a while I’ll break it out to use the GPS but most places I drive to I can find by memory. There are many “middle” ground solutions out there too (like Graphene OS), but as a general rule, I would make a habit of leaving your phone at home when you can, and definitely when engaging in anything spicy.