Marc
1 July 2026 · 5 min read
For years, a message between an iPhone and an Android phone travelled "in the open." That is changing. Since May 2026, RCS conversations between the two ecosystems can be end-to-end encrypted — a historic first hailed even by the Electronic Frontier Foundation. Here's the shift explained: what it is, the conditions to benefit from it, and why it's a turning point for the privacy of your messages.
Photo: Unsplash — RCS becomes end-to-end encrypted across platforms.
The missing link of RCS
RCS (Rich Communication Services) is the modern successor to the SMS: read receipts, typing indicators, high-resolution photos, richer groups. We covered it in our analysis of the decline of the SMS in the face of RCS in France. But one essential brick was missing between the two major systems: end-to-end encryption (E2EE).
Until now, an Android-to-Android conversation in Google Messages was already encrypted. As soon as an iPhone joined the chat, however, end-to-end encryption disappeared. In other words, the most common conversation — between an Apple user and an Android user — was the least protected. That is exactly the gap that has just been filled.
What changed in May 2026
The technical spark dates back to March 2025, when the GSMA (the global association of mobile operators) published the RCS Universal Profile 3.0. It's the first version of the standard to formally define end-to-end encryption for person-to-person RCS messages, built on the MLS (Messaging Layer Security) protocol.
The two giants then had to follow. They did: starting 11 May 2026, Apple and Google began rolling out end-to-end encrypted RCS between iPhone and Android, first in beta. In practice, a lock and an encryption indicator now appear both in Apple's Messages app and in Google Messages. Neither Apple, Google, nor the carriers can access the content of the exchanges.
| Before May 2026 | Since May 2026 |
|---|---|
| RCS encrypted only Android ↔ Android | RCS encrypted also iPhone ↔ Android |
| Apple ↔ Android message "in the clear" | End-to-end encryption by default |
| E2EE not defined by the standard | Defined by RCS Universal Profile 3.0 |
The three conditions to meet
Encryption switches on by default, but three boxes must be ticked at the same time:
- An up-to-date iPhone — the feature arrives with iOS 26.5 — on Apple's side.
- A recent version of Google Messages on the Android side.
- A compatible carrier at both ends, supporting both RCS and encrypted messages.
If any of these is missing, the conversation stays on standard RCS (or falls back to SMS). Encryption will be enabled gradually for both new and existing chats as the rollout expands. The good news: there's no complicated setting to change — just keep your apps up to date.
Photo: Unsplash — only the sender and recipient can read an end-to-end encrypted message.
And in France, concretely?
This is one to watch closely. In our June article, we noted that end-to-end encryption of RCS was not yet activated on French carriers' side: the new standard and the Apple–Google rollout change the picture, provided each operator switches on support in turn. RCS compatibility itself is already very broad in France (more than 8 mobiles out of 10).
This stronger encryption is part of a wider move to secure communications, alongside measures such as the Number Authentication Mechanism (MAN) against call spoofing. A useful reminder, though: encryption protects the content of a message, not your vigilance. Scams via fraudulent SMS (smishing) rely on gullibility, not on decryption. Our reflexes to protect the privacy of your SMS still apply.
Frequently asked questions
Are my RCS messages between iPhone and Android encrypted? Since May 2026, yes — if you have an iPhone on iOS 26.5, a recent version of Google Messages on the other side, and compatible carriers at both ends. An encryption indicator then shows in the conversation.
Do I need to turn on an option? No. End-to-end encryption is on by default as soon as the conditions are met. Just keep your apps and your phone up to date.
Is a standard SMS end-to-end encrypted? No. The traditional SMS offers no end-to-end encryption. That is precisely one of the strengths of encrypted RCS over the good old text message.
Who can read an end-to-end encrypted RCS message? Only the sender and the recipient. Neither Apple, Google, nor the carriers can access the content.
In summary
With the arrival, in May 2026, of end-to-end encrypted RCS between iPhone and Android, the most common message type finally becomes one of the best protected. The technical framework exists (RCS Universal Profile 3.0), Apple and Google have adopted it, and it all switches on by default once the conditions are met. A question about your messages? Our FAQ and contact page are here. And for a simple, instant, sign-up-free message, you can always send a free SMS to a French mobile.
