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Samsung joins Google in RCS shaming Apple
(www.theverge.com)
This is a most excellent place for technology news and articles.
Signal is the way to go. No need to expose metadata to your mobile carrier via RCS. Also, currently you need Google's proprietary garbage message app to make use of RCS. There's litterally no reason to do this.
I wish we live in an ideal world where we could have a messaging application which is like email. Anyone can run their server and can have whatever messaging client they want. And everything is interoperable.
There's Matrix and XMPP