A big hurdle with RCS was carrier adoption, at least in Asia.

I wonder about two things:

1. Would Graphene team’s implementation be usable on other devices that are less fortunate to be supported by the OS?
2. Would this be a drop-in replacement or would Graphene team need to work with carriers so that their implementation actually work?

On a tangential note, I would really like to read an in-depth analysis of how RCS had such a botched up implementation, which it has still to recover from almost a decade later.

The adoption is nowhere close to what it should have been, and instead it is now more associated with spam than actual communication. The Wikipedia entry does cover a lot of aspects, but it doesn’t explain how it went wrong.