Dialing into your voicemail isn't as common anymore. I think my carrier still allows me to do that, but mostly it's all handled on my phone nowadays

Never had that in the US AFAIK, but we used to have to pay by the SMS text.

I tried many years ago and couldn't figure it out. I've been hoping it will eventually fill up one day so people just can't leave messages anymore, but as I type that out, I realize that's probably highly unlikely to ever happen.

You should try to get those saved somewhere else, they won't last forever in voicemail and you could lose them.

I wish I had saved some of my father's messages 😔

"Mr. Watson, come here. I want to see about extending your horseless carriage's warranty". - Definitely the first ever phone call.