Apple Tests RCS End-to-End Encryption in iOS 18.4 Beta

Apple has begun testing end-to-end encryption for Rich Communications Services messaging in the latest developer beta of iOS 18.4, marking a step toward enhancing privacy in cross-platform communications between iPhone and Android users.

The feature appears in the iOS 18.4 beta released to developers this week, along with corresponding betas for iPadOS 18.4, macOS Sequoia 15.4, and watchOS 11.4. According to Apple's release notes, "RCS end-to-end encryption is now available for testing in this beta." However, the company emphasized that the capability is limited and will not launch with the final version of iOS 18.4. Instead, it is slated for a future software update across Apple's operating systems.

In its current form, the encryption supports only messages between Apple devices, such as iPhone-to-iPhone communications where iMessage is disabled and RCS is used as a fallback. Apple stated that "in this beta, RCS encryption is available for testing between Apple devices and is not yet testable with other platforms." Full support for encryption in conversations with non-Apple devices, including Android phones, remains in development and is expected to follow in subsequent updates.