How do you tell if your iPhone-to-Android text is actually encrypted — and what does the little padlock mean?

With iOS 26.5, iPhone-to-Android RCS chats can be end-to-end encrypted in beta on supported carriers — and the padlock icon is the only reliable way to tell. Here is what the lock means, and what to do when it is missing.

You text your green-bubble friend a joke about your bank login, a photo of your kid, and your home address — and somewhere between your two phones, who else could read all that along the way? Short answer: With iOS 26.5, iPhone-to-Android RCS chats can finally be end-to-end encrypted — in beta, on supported carriers — and the padlock icon in the chat is how you know. Encrypted means only the two phones can read the conversation, not the carriers carrying it.

No padlock means that chat is NOT end-to-end encrypted yet, even if it is RCS. It is on by default where supported, but both sides have to qualify: the iPhone on iOS 26.5, the Android phone on the latest Google Messages, and both carriers supporting RCS Universal Profile 3.0. Why it matters: old cross-platform texts travelled like postcards — readable in transit.

This encryption, built with the GSMA on the MLS protocol, turns them into sealed letters, and the upgrade also brings message editing, deleting and inline replies across the iPhone–Android divide.1. Update both phones. Put the iPhone on iOS 26.5 (Settings > General > Software Update) and update Google Messages on the Android side.2.

Look for the padlock. Open a green-bubble RCS chat and check the compose area for the lock icon or ‘RCS – Encrypted’ wording.3. Confirm the toggle is on.

On the iPhone, check Settings > Apps > Messages for the RCS encryption setting and leave it on.4. No padlock, no secrets. Do not send sensitive codes or documents in an unencrypted chat — make a call or use an encrypted app instead.5.

Check every chat. Group chats and business chats can behave differently from a one-to-one thread, so verify each one.Pro tip: The bubble stays green either way — green tells you nothing about encryption. Only the padlock does.Ad’s take: I am glad the green-bubble penalty is finally shrinking.

Check for the lock once, teach your family what it means — and stop texting passwords to anybody, padlock or not.