> and included by default on every Android phone I've seen since it replaced Google Talk or GChat or whatever it replaced.
Hangouts has since been replaced by Messages as Google's primary Android SMS app, and by Allo as its primary Android internet-based text chat app, and by Duo as its primary Android video-call app.
Except that neither Messenger or Allo are embedded in Inbox or Gmail. It's Hangouts all the way there. I actually like Messenger, but it's lacking certain features so I always end up back on Hangouts. Plus, Messenger doesn't give me transcripts of voicemails. So "integrated" is pushing it. It's there, it's nice, but it's not everywhere and as useful as Hangouts is.