Apple’s iOS 26.5 update introduces end-to-end encryption for Rich Communication Services (RCS), allowing private, encrypted messaging between Apple’s Messages app and Google Messages on Android. This long-anticipated feature fulfills promises from both tech giants to improve security and privacy in default cross-platform messaging apps.
- End-to-end encryption for RCS enabled by default on iOS 26.5
- RCS replaces SMS for richer media and better messaging quality
- Encryption depends on carrier support and GSMA RCS Universal Profile 3.0
What happened
Apple released iOS 26.5, which brings support for end-to-end encryption of Rich Communication Services (RCS) messages between iPhones and Android devices. This update extends encrypted messaging beyond iMessage to cross-platform conversations in the default chat apps, specifically Apple Messages and Google Messages. The feature activates when carriers support both RCS and encrypted messages.
RCS is the evolution of SMS, enabling enhanced media sharing and richer communication features. Apple adopted RCS compatibility earlier in 2024, improving interoperability with Android devices. The current update adds robust privacy protections through encryption implemented by the Messaging Layer Security protocol in accordance with the GSMA RCS Universal Profile 3.0.
Why it matters
This update addresses a longstanding privacy gap by ensuring that messages sent between Apple and Android users are secured end-to-end, preventing access by service providers, carriers, or platform owners. It marks a key milestone in delivering on public promises made by both Apple and Google to enhance user communication privacy across ecosystems.
While message content gains strong encryption protections, metadata will likely continue to be collected and stored by carriers. Additionally, backups to cloud services may not be fully encrypted unless users enable specific advanced protection features like Apple’s Advanced Data Protection, meaning that some privacy risks remain. Despite these caveats, the upgrade significantly raises the baseline security of cross-platform mobile messaging.
What to watch next
Future developments to monitor include how widely carriers enable support for encrypted RCS, as this directly affects the availability of the feature to users globally. Adoption by additional mobile network operators will be key to realizing the full privacy benefits broadly across markets.
Users and privacy advocates will also be looking for enhancements to backup encryption on both iOS and Android platforms, with hopes that Google might adopt protections similar to Apple’s Advanced Data Protection. The evolution of RCS encryption standards and carrier implementations will continue to shape the security landscape of mobile messaging.