I remember freaking people out 15 odd years ago when I got my BellSouth mobile and greating the person by name when they phoned. This was long before Telecom landlines got Caller ID when they upgraded to the 61e exchanges.
I still remember calling the Bellsouth helpdesk because my message 'icon' didn't dissapear when I cleared my voicemail, and the guy on the helpdesk calmly explained what text messaging was for I imagine what was only the first of several thousand times he would repeat the same speal in the next few years.