iOS 26.5 Beta Supports RCS End-to-End Encryption
Privacy Guides Community [Unofficial]
March 31, 2026
ToughBird:
> The thing is, they most likely don’t know about RCS so they can’t argue that RSC and normal SMS is good enough and Signal is not “necessary”.
Respectfully, this is a terrible strategy. Relying on people not knowing a fact to convince them to do something is essentially manipulation.
Instead, I would point out that while iMessage supports encryption for most messages, this isn’t verifiable, because all parties are proprietary clients.
iMessage is proprietary, but so is every RCS app (1), mainly Google Messages. So you can’t verify on either side the claimed encryption.
It’s also worth noting, that just like Whatshapp, metadata isn’t encrypted. (see iOS 26.5 rcs interop deepdive). This means in practice who you talk to, when, how often, isn’t encrypted. Ask them if they ever send colleague a 1 AM message.
(1) I don’t know many RCS app apart from Google and Apple. There was Samsung Messages, but it is slowly being shutdown. I guess there a handful of clients from India and China, but in any case none of this apps are open-source.
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