I had Verizon since day 1.
I remember:
Taking some computer classes at UND, punch some cards, take them to Twamley, get a print out next day.
Getting an Apple 2e, no hard drive.
When pagers became popular get a beep, a phone # would show up on a small screen, kept my ash try full of quarters - head to pay phone.
Fax machine showed up, 2 years later - signatures were legit on the fax.
Emails, later adding attachments, and then getting scanner, better copy than a fax.
Cell phone
Cell phone texting - first ones had limited characters per message.
Cell phone with internet - turning into small computers.
& SS.