Comment by milesjag

The practical advantages of tiny dumb phones outweigh the technical disadvantages. There are 2 kinds of trip:

A - I travel across the city to visit friends/family/work or go somewhere far but familiar.

B - I travel across the country or for an extended period of time.

A dumb phone will cover A and a smart phone will cover B. The switching of sims is a non-issue as situation A covers almost all of the time.

For exercise, I just found that eliminating the concern of what to listen to was the real gain