Since I am very old, mobile phones at the time were back-breakingly huge
There were mobile phones when you were young. You are not old.
There were mobile phones when you were young. You are not old.
"In 1910 Lars Magnus Ericsson installed a telephone in his car, although this was not a radio telephone. While travelling across the country, he would stop at a place where telephone lines were accessible and using a pair of long electric wires he could connect to the national telephone network."