RCS texts on the iPhone aren't encrypted now, but that could change
Briefly

"We believe that E2EE is a critical component of secure messaging, and we have been working with the broader ecosystem to bring cross-platform E2EE to RCS chats as soon as possible," Elmar Webar, a general manager at Google, said on LinkedIn. "Google is committed to providing a secure and private messaging experience for users, and we remain dedicated to making E2EE standard for all RCS users regardless of the platform."
In the announcement, GSMA technical director Tom Van Pelt said the next milestone for RCS Universal Profile is the "first deployment of standardized, interoperable messaging encryption between different computing platforms." The move would help bridge a major gap in interoperability - especially now that Apple's on board with RCS.
Apple's iOS 18 update replaced SMS with RCS messaging for texts sent to users on Android... it will finally allow cross-platform users to share high-res media, as well as see read receipts and typing indicators. But Apple's implementation of RCS is missing one key feature: E2EE.
Currently, not all RCS providers offer E2EE. Google Messages is one of the exceptions, as it started enabling E2EE by default for RCS conversations last year.
Read at The Verge
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