Apple has quietly added early RCS encryption support to the iOS 26.4 developer beta, marking a small but significant step toward securing cross-platform messaging. The feature, which promises end-to-end encryption for RCS messages between iPhones and Android devices, was first announced back in March 2025.

This encryption capability has been in development for months, with the first hints appearing in January's iOS 26.3 beta. However, testing remains extremely limited in the current beta release, suggesting Apple is still fine-tuning the implementation before a wider rollout. The move addresses long-standing security concerns about RCS messaging, which traditionally lacked the robust encryption found in iMessage.

While the encryption feature is now visible to developers, its restricted testing scope indicates Apple isn't ready for prime time just yet. The company appears to be taking a cautious approach, likely to ensure compatibility and security across the fragmented RCS ecosystem. This development represents Apple's continued effort to improve interoperability while maintaining its security standards, even as it bridges the gap between iMessage and standard SMS/RCS messaging.