Android education is an ongoing event for me. I continually learn things here at Android Central!
Installing Google's Messages App on your Unlocked Flip 3 should work fine for RCS. It does on my Unlocked Galaxy S22 Ultra. Google seems to be serious about refining the app & adding new features. Of course, you know this as you use it on your Pixels.
I initially switched to Google's app from Samsung's app as the spam filtering is really good on the Google version. After T-Mobile's zillionth data breach,
, I was flooded with mass group messages. The Samsung app spam filters didn't help, whereas, the Google app filtered them to spam.
Occasionally, I toggle the default back to Samsung's app for a message or two, depending on the feature I want, then toggle the default back to Google's version. I find I do that less & less, as Google keeps updating their version. I can't remember the last time Samsung introduced a new feature on their version. But then, there's a lot of things I can't remember the last time that...