[pct-l] Cell Phones

[Kea]

What is the general experience with cell phones on the PCT?  Like what
coverage do they have and which is the best one?

I read a comment a few years ago that said that for all practical purposes
that (with the exception of a satellite phone), they only work in towns.
But there appears to be a lot of people updating journals and sending
messages from the trail so something must work somewhere.

Kea