"AMPS" (Advance Mobile Phone Service) was introduced commercially in 1983. Here's a promotional video that AT&T released. Some of us might remember that AMPS (also D-AMPS/TDMA/IS-136) was retired back in February of 2008 with the last major systems retired in March of 2008. mental_floss Blog » Testing Cell Phones in 1979
I thought that video was really informative in a retro-sort-a-way. I didn't get my first mobile until 1994 when I landed a grave-shift job 45-minutes from home. Driving backroads was about half the distance of the commute & at night, with nothing but farms, i felt i needed the extra "insurance" of having a phone. I think it was an Ericsson offered by the old AT&T, it was their first "digital" model (as opposed to analog) and had a huge whip antenna. The phone itself was smaller than the Moto Brick. So while I wasn't an "early adopter" I did get into wireless phones before many of my peers.
LOL In most places it is still legal Cell Phone and Texting Laws By State I liked that video by the way, it was great. Seemed like it should've picked up speed alot faster since 1979, Seems like we get more done in a few months with the cellular networks of today than they got done in 10-15 years from 1980-1995