For years, texting between an iPhone and an Android phone meant falling back to old-fashioned SMS: blurry photos, no typing indicators and no privacy. That’s changed. RCS has replaced SMS as the standard for texts between the two, and in 2026 those messages gained end-to-end encryption.
What is RCS?
RCS stands for Rich Communication Services. It’s the modern replacement for SMS and MMS, built into your phone’s normal Messages app. Compared with SMS, it adds:
- Typing indicators and read receipts
- High-quality photos and videos
- Better group chats
- Messages over Wi-Fi or mobile data
- Reactions, replies to specific messages, and the ability to edit and unsend
Android phones have had RCS for years through Google Messages. Apple added it to the iPhone in 2024.
What’s new: end-to-end encryption
Until 2026, RCS chats between iPhone and Android weren’t encrypted. Apple and Google worked together on a shared standard, and with iOS 26.5 in May 2026, end-to-end encrypted RCS began rolling out between the two platforms.
End-to-end encryption means only you and the person you’re messaging can read the messages. Not your mobile network, not Apple, not Google.
When a chat is encrypted, you’ll see a lock icon in the conversation.
What you need
For an encrypted RCS chat, both people need:
- iPhone: iOS 26.5 or later
- Android: the latest version of Google Messages
- A mobile network that supports the latest RCS standard
- RCS switched on
The rollout has been gradual, so not every chat will show the lock straight away.
How to check RCS is on
iPhone: Settings → Apps → Messages → RCS Messaging
Android (Google Messages): tap your profile picture → Messages settings → RCS chats
When your texts still aren’t private
This is the important part. Your phone will fall back to SMS if RCS isn’t available, for example if the other person has an older phone, has RCS turned off, or has no data connection.
SMS is not encrypted. It can be read by networks and intercepted.
So before you send anything sensitive:
- Look for the lock icon.
- On iPhone, the text box says “Text Message · RCS” or “Text Message · SMS”, so you can tell which you’re using.
- If in doubt, use an app that’s always end-to-end encrypted, such as WhatsApp, Signal or iMessage (between Apple devices).
What about blue and green bubbles?
On an iPhone:
- Blue bubbles are iMessage, between Apple devices, always encrypted.
- Green bubbles are RCS or SMS, to Android phones. They’re still green, but RCS ones now work much better and may be encrypted.
Should you stop using WhatsApp?
No need. WhatsApp, Signal and iMessage remain excellent, and are encrypted by default in every chat. But it’s good news that the built-in texting app is finally catching up, especially for messaging people who don’t use the same apps as you.
💡 Tip: never send passwords, card details or one-time codes by text, encrypted or not. And remember that your bank will never ask you to read out a code they’ve sent you.
Wrapping up
Texting between iPhone and Android is now richer and, increasingly, private. Make sure RCS is switched on, keep your phone updated, and look for the lock before sending anything sensitive.
Next in the series: Own Your Cloud: The Rise of Home NAS Storage
Sources: Apple Newsroom: End-to-end encrypted RCS messaging begins rolling out · MacRumors: iPhone–Android RCS conversations are end-to-end encrypted in iOS 26.5 · gHacks: Apple adds end-to-end encryption for RCS
