I still do that sometimes.

Well, I usually bring a cheap dumbphone in case of emergency, but I didn’t give the number to anyone, if it’s even turned on to begin with.

I don’t always need it.

Unfortunately, recently they added enormous fees for paper train tickets over here in Slovakia.
€1 for one-way purchased in station
€2 for two-way purchased in station
€3 if purchased in train (this purchase was always something used in a case when tickets weren’t sold on departure station/stop, otherwise there is/was a €5 fine for that purchase)

So you kind of need a phone, again.