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Apple Enables RCS End-to-End Encryption Testing in iOS 26.4 Developer Beta

The trial is limited to iPhone-to-iPhone chats with a gradual rollout to testers.

Overview

  • Apple’s release notes say the encryption feature is for testing only and will reach customers in a future iOS 26 update.
  • In this beta, RCS encryption works only between Apple devices, effectively for conversations where iMessage is disabled.
  • A new Messages setting for testing is enabled by default, though functionality is being activated progressively for beta users.
  • Encrypted RCS threads show a lock icon in the conversation interface, and iMessage threads display the same indicator for parity.
  • Wider cross-platform availability requires carrier support and GSMA’s RCS Universal Profile 3.0, which also adds editing, deletion, and inline replies.