Technology & Science

Apple Ships iOS 26.5, Beta Launch of End-to-End Encrypted RCS Between iPhone and Android

On 12 May 2026 Apple released iOS 26.5, turning on carrier-dependent, end-to-end encrypted RCS messaging between iPhones and Android phones for the first time, though the feature remains in beta and limited to a short list of participating networks.

By Underlines Team

Focusing Facts

  1. Encryption activates only when an iPhone on iOS 26.5 and an Android device on the latest Google Messages are both on carriers that have deployed RCS Universal Profile 3.0; Apple published a carrier whitelist alongside the rollout.
  2. The same day, legacy models received security-only updates iOS 16.7.16 (build 20H392) and iOS 15.8.8 (build 19H422), underscoring Apple’s split-track support strategy for pre-iPhone 11 hardware.
  3. The technical backbone is the GSMA’s RCS Universal Profile 3.0 (March 2025) using the IETF’s Messaging Layer Security (MLS) protocol, co-authored by Apple and Google.

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