Yeah, this seems to be happening to a few people after updating to iOS 18.7.1 RCS just disappears from the carrier section even though it’s still toggled on in Messages.
Here are a few things you can try that have helped others:
1 Check your carrier settings update
After an iOS update, sometimes the carrier settings don’t install automatically.
Go to Settings › General › About - wait a few seconds and see if you get a pop-up asking to update carrier settings. If you do, tap Update.
2. Toggle RCS off and on again
Go to Settings › Apps › Messages › RCS and turn it off for about 30 seconds, then turn it back on.
Give it a minute to reconnect sometimes it takes a little while for it to re-register with your carrier.
3. Check your SIM or eSIM status
If you’re using eSIM or recently switched SIMs, make sure your line is active and set as the default for Messages.
Go to Settings › Cellular › Your Line › Network Selection, and make sure your carrier is showing up properly.
4. Update or reinstall carrier profile manually
You can contact your carrier and ask them to push a fresh carrier configuration to your iPhone. A few users said that fixed the “Voice & SMS only” issue where RCS disappeared.
5. Reset iMessage & FaceTime connection
Turn both iMessage and FaceTime off, restart your phone, and turn them back on.
It sounds unrelated, but sometimes it refreshes the messaging network connection that RCS relies on.
6. Contact your carrier support
If none of that works, it might be on the carrier’s side. Some carriers are still rolling out RCS updates that match the latest iOS build, so their servers may need to re-register your number.
TL;DR
RCS disappearing under Carrier → About after iOS 18.7.1 is most likely a carrier profile issue, not your phone itself. Try a carrier settings update or reach out to your carrier for a push configuration — that usually brings RCS back.
Hope This Works:)
