Turning on RCS Chat means flipping the switch in Google Messages on Android or in Settings > Apps > Messages on iPhone, assuming your carrier and device are compatible.
RCS Chat replaces the basic SMS bubble with typing indicators and read receipts. Turning it on takes about thirty seconds, but whether the switch actually shows up depends on your carrier and your phone. Here’s exactly how to enable RCS Chat on your device, along with common roadblocks and the one setting that trips everyone up.
What Exactly Is RCS Chat?
RCS stands for Rich Communication Services, an IP-based messaging standard developed by the GSMA. It works over mobile data or Wi-Fi, so it handles high-resolution photos, group chats, and read receipts much better than SMS or MMS ever could.
Google Messages calls the feature RCS chats. Apple calls it RCS Messaging. Under the hood it’s the same standard, and it gives you these features whenever both sides have it enabled:
- Read receipts — see when someone has read your message.
- Typing indicators — know when the other person is writing back.
- High-resolution media — photos and videos that don’t look like they were sent through a fax machine.
- Group chat — proper group conversations that don’t degrade into MMS chaos.
How To Enable RCS Chat On Android (Using Google Messages)
On Android, the only app that supports RCS Chat out of the box is Google Messages, and turning it on is a simple five-tap process inside the app’s settings.
- Open Google Messages.
- Tap your Profile picture (or initial) in the top-right corner.
- Tap Messages settings.
- Tap RCS chats (some older versions may still call it Chat features).
- Turn RCS chats on.
You’ll likely see a prompt to verify your phone number. Enter the 6-digit code sent via SMS, and the feature activates immediately. If the toggle for RCS chats is missing entirely, your carrier has disabled the feature on your line, and you’ll need to contact your carrier to request access.
How To Enable RCS Chat On iPhone (Apple Messages)
Apple added RCS support in iOS 18, and the toggle lives inside the main system Settings, not inside the Messages app itself.
- Open Settings.
- Tap Apps.
- Tap Messages.
- Tap RCS Messaging.
- Turn RCS Messaging on or off.
Once enabled, the Messages app will automatically use RCS for conversations with other RCS users. This setting only appears if your carrier plan and iPhone model support RCS. If it’s missing, check with your carrier or update to iOS 18.
RCS Chat vs. SMS vs. MMS
| Feature | RCS Chat | SMS / MMS |
|---|---|---|
| Read Receipts | Yes (built-in) | No |
| Typing Indicators | Yes | No |
| Media Quality | High-resolution, full-size | Highly compressed (MMS limits) |
| Network | Mobile Data or Wi-Fi | Cellular signal required |
| Encryption | Supported (Google Messages, Apple beta) | Not standard |
| Group Chat | Proper group management | Often breaks or sends as MMS |
Why Isn’t My RCS Chat Working? (Common Fixes)
RCS Chat usually fails for one of three reasons: your carrier blocks it, the recipient doesn’t have RCS enabled, or the app is stuck in a verification loop.
- Carrier blocks it. You can’t force it on. Contact your carrier or wait for them to support RCS. This is the most common gate on both Android and iPhone.
- Recipient doesn’t have it. Messages fall back to SMS or MMS automatically. No action needed, but RCS features won’t work for that conversation.
- Verification is stuck on “Setting up.” Go to Messages settings > RCS chats and turn RCS off. Wait 10 to 15 minutes, then turn it back on. If that fails, visit Google’s official support page for RCS chats to reset it from the web.
- You just switched phones. Disable RCS on the old device in Messages settings > RCS chats before setting it up on the new one. Otherwise, the old phone may still hijack RCS messages.
- iPhone-specific issue. Confirm the toggle for RCS Messaging is actually ON in Settings > Apps > Messages. Also confirm the other person is on iOS 18 or later.
RCS Troubleshooting Quick Reference
| Problem | What’s Happening | The Fix |
|---|---|---|
| “Setting up” stuck for days | RCS is trying but failing to verify your number | Turn RCS off, restart phone, turn it back on. Use the web portal if that fails. |
| Messages still going out as SMS/MMS | Recipient doesn’t have RCS on their device | RCS only works when both sides support it. No fix on your end. |
| Can’t find the RCS setting at all | Carrier or device doesn’t support RCS | Update your OS and check your carrier’s RCS support page. |
| New phone still showing “Activating” | RCS is linked to the old phone’s number | Disable RCS on the old device or use the web portal to unlink it. |
How To Disable RCS Chat (Temporarily or Permanently)
The same menu you used to turn RCS on lets you turn it off, and Google provides a web portal if you no longer have access to your old device.
- On Android: Open Messages settings > RCS chats and toggle it off. Google’s RCS deactivation web portal lets you disable it remotely before switching phones.
- On iPhone: Toggle RCS Messaging off in Settings > Apps > Messages.
Disabling RCS means your messages will fall back to SMS or MMS for everyone until you turn the feature back on.
Here’s your game plan:
1. Check if your carrier supports RCS.
2. Open your messaging app’s settings (Google Messages or Apple Messages).
3. Flip the RCS switch and verify your number if prompted.
4. That’s it. RCS will automatically activate for every compatible contact from that point forward.
References & Sources
- Google. “About RCS chats.” Official setup steps and troubleshooting for RCS in Google Messages.
- Apple. “Use RCS Messaging on iPhone.” Official support page for RCS in iOS 18 and later.