[riscy]

Please explain how interoperability between messaging apps is possible if two different, proprietary E2EE schemes are used atop RCS.

Google's interop "solution" with the Samsung messages app is by not using encryption. Apple has that same level of support coming to iOS next year, and has also announced plans to work with GSMA on adding standardized encryption to RCS.

[ruszki]

I like that you put Google’s solution into apostrophes, while Apple’s current solution has the same problem, and even more. But I’m glad that we agree.