Had the same issue on my S23+. This solution finally fixed it for me: go here and de-register RCS for your number - How to turn off RCS chats (google.com) then wait 5 minutes and turn the RCS feature back on in messenger. I think it has something to do with your previous phone messenger app still being cached or whatever. That definitely fixed RCS for me. Nothing else i tried worked. Damit, this took me about a month to resolve. What worked for me in the following order:Unregistering on the siteClear cash and data for MessengerUninstall updates.RestartInstall updates.ActivateAnd it started working
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