I still like apps that can use both voice and text messages but in a text like conversation.

The removal of dialing and waiting for the ringing to stop (as well as those fake-out voicemail messages where they spoke as if answering followed with "just kidding! Leave your message..." Fucking hated people that did that shit) did a lot for it, and sometimes you only have time to say one thing before getting back to something else without the paranoia of them answering and having to deal with the pleasantries and hoping they wouldn't be impossible to get rid of after you finished whatever you had to say.