Every community decides for itself what technologies to adapt. The nearest to me have a single phone booth in the front yard of one member's house. Anyone wants to use the phone, they go there to make a call, and most only use it if they need to make an appointment at a hospital for serious illnesses.
Others not quite as close are a fair degree more liberal in what they adopt, while I imagine there's probably a few that are more strict.
My experience is based on visits to an Amish town in Ohio when I was growing up in the 2000s. I distinctly remember being surprised to see they used phones and rode in cars. But that was a long time ago and only one town of many. I didn't mean to generalize all Amish communities.
Others not quite as close are a fair degree more liberal in what they adopt, while I imagine there's probably a few that are more strict.