Somebody set up a pay phone (free) at Burning Man years ago. They had to tie it to a satellite link, because cell phone service hadn't reached Black Rock yet.
In early days of 3G, I had unlimited data and a hotspot that took a PCMCIA EVDO card. I also had SIP adapter w/ pulse dialing and a spot on my minivan dashboard that would have perfectly held a candlestick phone.
Except I could never find a dang phone (that I could afford).