When I was in Europe in 2018/2019 (where they still had decent 3G network coverage unlike my provider here in the USA) I used my Nokia N900 as my daily driver, not as a smartphone but primarily a feature phone with a full keyboard and a Linux terminal for bash scripting on the go. In fact, I used a bash script to track my cash expenses rather than a dedicated app.

I just left my Elite x3 behind this year. Best phone I've ever owned. But I consider security updates a must-have, so I dropped it when Microsoft finally stopped pushing updates.