Now you're just being absurd. Do you think we had iphones decades ago? A few decades ago rotary dial phones were still common, cellphones were virtually unheard of, VoIP was a dream, nobody expected a resurgence of the telegraph (e.g. SMS), and switching was still done with in-band signaling.
Virtually everything about telephones has changed over the past few decades. It's easier to list the things which haven't changed: we still use phone numbers (kind of... because actually almost everybody uses the contacts app built into their phones.) We still pay phone companies for the service, except now there's tons of phone companies and you aren't stuck with one.