Until now, every single text you sent from an iPhone to an Android phone could be read by someone in the middle.
It could be your carrier, a network operator, or anyone with the right tools sitting on the right server. That was just the reality of cross-platform messaging, and most people had no idea.
With iOS 26.5 now available, that changes. Apple and Google actually worked together on this, which is already a strange sentence to type, and the result is end-to-end encrypted RCS messaging between iPhones and Android devices.
Meaning the message scrambles on your phone and only unscrambles on your friend’s phone. Nobody in between can read it.
What Made This Technically Possible
This did not happen because two companies shook hands. Apple and Google co-led a broader industry effort through the GSM Association, the body that sets global mobile standards.
The result was RCS Universal Profile 3.0, which baked encryption directly into the protocol using a protocol called Messaging Layer Security.
That is the same foundational approach used by other secure platforms, now standardized across carriers and devices.
The catch, and there is always a catch, is that both your carrier and your contact’s carrier need to support this newer version of RCS.
Apple is rolling it out gradually, and it is technically still tagged as beta inside iOS 26.5. You will know it is working when a small lock icon appears on the conversation. The toggle to manage it sits inside Settings under Messages.
Why This Gap Existed for So Long
iMessage between two iPhones has been encrypted for years. WhatsApp has offered end-to-end encryption since 2016.
The glaring holdout was the green bubble conversation, which ran on RCS or older SMS infrastructure with no encryption at all. A billion-plus cross-platform conversations are happening daily, completely exposed at the network level.
RCS Universal Profile 3.0 also bundles additional features that smooth out the iPhone-Android experience.
These include the ability to edit and delete sent messages, react with Tapbacks across platforms, and reply to specific messages inline.
Android users need the latest version of Google Messages for any of this to work. If your contact has not updated, the lock icon will not appear, and the conversation will run without encryption just as before. Worth checking before you assume the padlock is there.
