smileyhead , 3 months ago (edited 3 months ago)

RCS should not really be a proprietary app in the sense of a 3rd part installable app.

But it is. SMS works via operating system exposing an API for developers for the phone modem interface. Google Messages is just an internet messaging app, just instead of using Internet standards like XMPP (from creators of Email and IP) it uses carrier’s standards which are mainly made with carriers being required in mind.

If you don’t believe me get a blocklist for all Google’s IP addresses and you’ll see Google Messages would stop working, because the app is connecting to Google Jibe servers (most carriers rent servers from them).