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To turn on RCS on an iPhone, go to Settings > Apps > Messages > RCS Messaging and enable RCS Messaging. You need iOS 18 or later and a carrier plan that supports RCS on iPhone; availability varies by carrier and region. A green message bubble alone does not confirm RCS is in use.
Before you turn on RCS
- Check your iOS version: RCS on iPhone requires iOS 18 or later. Update iOS if needed.
- Check carrier eligibility: Your carrier must support RCS on iPhone for your region and line. Apple notes that availability varies; consult its wireless-carrier feature listings for the relevant region, then confirm with your carrier if needed.
How to turn on RCS messaging on iPhone
- Open Settings.
- Tap Apps, then Messages.
- Tap RCS Messaging.
- Turn on RCS Messaging.
These are Apple Support’s current instructions in its RCS setup guide. Apple says there may be a slight delay after you first turn on RCS; allow time for activation rather than assuming the setting failed immediately.
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How to check whether RCS is working
First, make sure the RCS Messaging switch is on. Then send a message to someone whose carrier supports RCS. RCS is carrier-provided and is used when the conversation is not using iMessage; it can use Wi-Fi or cellular data.
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Do not use bubble color as the deciding test. Apple says iMessage messages appear blue, while RCS, SMS, and MMS messages appear green. A green bubble tells you the message was not sent as iMessage, but it does not distinguish RCS from SMS or MMS. RCS supports features such as delivery and read receipts and typing indicators that SMS/MMS do not provide, but their presence alone should not be treated as conclusive proof of the protocol.
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- DESIGNED BY APPLE — Ideal for charging, syncing, and transferring data between USB-C devices, this 1-meter charge cable is made with a woven design and has USB-C connectors on both ends.
- FAST AND CONVENIENT CHARGING — Supports charging of up to 60 watts and transfers data at USB 2 rates. Pair the USB-C Charge Cable with a compatible USB-C power adapter to conveniently charge your devices from a wall outlet and even take advantage of the fast-charging feature on select iPhone models.
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Why you might not see RCS Messaging in Settings
- Your iPhone is running an older iOS version: Update to iOS 18 or later.
- Your carrier or region does not support RCS on iPhone: Support varies. Check Apple’s carrier feature listings for your country or region and ask your carrier whether RCS is available on your specific line and plan.
What to do if RCS activation or messages fail
- Confirm that Wi-Fi or cellular data is available.
- Restart your iPhone and check that the RCS Messaging switch remains on.
- If you just enabled RCS, wait briefly for activation.
- Test with a recipient whose carrier supports RCS.
- If the option is missing or messages still cannot be sent or received, contact your carrier to verify RCS support and provisioning on your line. Apple’s message troubleshooting guidance also recommends checking connectivity and carrier support.
Does turning on RCS mean messages are encrypted?
No. Do not assume every RCS conversation is end-to-end encrypted. Apple documents end-to-end encrypted RCS as a beta on iOS 26.5 with participating carriers, and all participants’ carriers must support it. When encryption is active, the conversation displays “Encrypted” and a lock icon. See Apple’s comparison of iMessage, RCS, and SMS/MMS for its current explanation of message types and security.
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- WHAT’S IN THE BOX — Apple USB-C Woven Charge Cable only. Power adapter sold separately.
- CABLE LENGTH — 2 meters (6 feet).
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