The new RCS (Rich Communication Services) specification now includes end-to-end encryption (E2EE) via the Messaging Layer Security (MLS) protocol, enabling secure, private text messaging between Android and iPhone users for the first time—thanks to work by the GSM Association in collaboration with major players like Apple and Google. Apple has confirmed it will incorporate support into iOS, iPadOS, macOS, and watchOS via future software updates, though no exact timeline has been disclosed. While Android’s Google Messages already supports default E2EE for RCS conversations, cross-platform encryption with iPhones is poised to close a longstanding privacy gap.
Sources: Slashdot, The Verge, Android Authority
Key Takeaways
– Privacy advances cross-platform: RCS will now apply E2EE across Android and iPhone, preventing carriers or servers from reading the content.
– Apple’s official but vague timeline: While Apple is on board and contributed to standards, it hasn’t confirmed precisely when updates will land in public software releases.
– Android already moving ahead: Google Messages already employs E2EE for RCS en route to full cross-platform parity in security.
In-Depth
Over the past decade, texting between Android and iPhone users has carried a bit of an asterisk: while iMessages (blue bubbles) stayed secure, green-bubble RCS chats were exposed—not encrypted end-to-end. That’s about to change. Early this year, the GSM Association unveiled a revised RCS Universal Profile that embeds full end-to-end encryption using Messaging Layer Security (MLS), designed to keep texts unreadable by carriers or third parties during transit.
Apple has confirmed its role in shaping the updated standard and pledged to expand its ecosystem—including iOS, iPadOS, macOS, and watchOS—to support encrypted RCS messaging in an upcoming software release. Meanwhile, code-flow analysis suggests iOS 26 betas already include the skeletal framework for MLS-based E2EE, hinting that an official rollout could be near—but as with all unreleased software, patience remains essential.
So what does this mean for the everyday texter? Once implemented, it would close a security loop that’s existed since RCS was introduced to iPhones with iOS 18. Users will finally be able to text across operating systems with encryption that rivals today’s best-in-breed messaging apps. For privacy-minded folks, it means one less concern: their chats won’t pass through eyes at the carrier or app-maker level. That said, for now, cross-platform users should continue relying on apps like Signal or WhatsApp if they want guaranteed E2EE—but soon, default texting may get there, too.