of course mobile phones have been around for much longer than even the old analogue cellular network.
https://www.youtube.com/watch?v=MR4hoSh0Ols
I didn't know anyone who had one of those, but a friend of mine had the latter iteration on South Lancs Radiophone, which I believe was called "System 3". It still needed an operator.
Did anyone use "National Band 3" trunked radio system for work?