Apple and Google Enhance Messaging Security with End-to-End Encryption for RCS

Apple and Google are collaborating to bring end-to-end encryption (E2EE) to Rich Communication Services (RCS) messages exchanged between iPhones and Android devices. This move aims to elevate the security of cross-platform messaging to a level comparable to that of iMessage and Android’s native RCS implementations.

Initial Testing and Current Status

Apple initially began testing E2EE for RCS in the first beta of iOS 26.4, but the feature was initially limited to iPhone-to-iPhone communications when iMessage was disabled. The second beta of iOS 26.4 marks a significant step forward, extending E2EE testing to include iPhone-to-Android RCS messages. MacRumors first reported on this development.

To participate in the testing phase, iPhone users need to install the second beta of iOS 26.4 and ensure RCS messaging is enabled in Settings > Messages. Android users require the latest version of the Google Messages app. 9to5Google details the setup process for Android users, which involves joining the Google Messages beta program.

Visual Indicators of Encryption

Both Apple and Google are implementing visual cues to indicate when a message is end-to-end encrypted. In the iOS Messages app, green message bubbles will display “Text Message · RCS | [lock icon] Encrypted.” Google Messages will utilize a similar lock icon to signify encrypted conversations. This provides users with clear confirmation that their messages are protected from eavesdropping.

Future Availability and Implementation

While testing is underway, Apple has clarified that E2EE for RCS will not be included in the initial release of iOS 26.4. According to Apple’s developer release notes, the functionality will be rolled out “in a future update of iOS 26.” Apple Developer documentation confirms this timeline.

This integration builds upon Apple’s introduction of basic RCS support with iOS 18 in September 2024, and the addition of E2EE represents a crucial step towards establishing a secure and feature-rich messaging experience between iOS and Android platforms.

Key Takeaways

• Apple and Google are testing end-to-end encryption for RCS messages between iPhones and Android phones.
• The testing requires iOS 26.4 beta 2 on iPhones and the latest Google Messages beta on Android.
• Encrypted messages will be visually indicated with a lock icon and accompanying text.
• The feature is not expected to launch with iOS 26.4 but will be available in a future iOS 26 update.