$TXHDD ~ Some mobile carriers have started rolling out support for the RCS Universal profile - a new messaging standard enabling traditional texting to look more like chatting in a modern messaging app, complete with read receipts, typing indicators and more. Once the Universal RCS standard is fully-adopted, it will allow for RCS messaging between supported smartphones on all major carriers, rather than just within the same carrier.
https://finance.yahoo.com/news/textmunication...00132.html