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How RCS on iPhone Will Make Texting Better for Everyone
(www.cnet.com)
This is a most excellent place for technology news and articles.
One feature I found extremely useful is that you can now quote previous texts. Less useful is the ability to react to texts with emojis. But it's good for letting someone know that you saw/liked their message by reacting with a thumbs up.
I have never remembered this when it would actually be useful, and always end up accidentally doing it.