RCS Stuck on "Connecting" or "Setting up"? Here's Why
Short answer
"Connecting" means your phone has asked your carrier to register your number for RCS and has not heard back. The registration happens on their servers, so there is usually nothing wrong with your phone and nothing you can do to speed it up directly. Give it a few hours before troubleshooting, then work through the six steps below in order — most cases are a data connection problem or a line that was recently ported or swapped.
What “Connecting” actually means
This is worth understanding before you start changing settings, because it explains why most of the advice you will find elsewhere does nothing.
When you switch RCS on, your phone does not enable a feature locally. It sends a request to your carrier’s messaging system asking to register your phone number for RCS service. That system checks your line, your plan and its own provisioning records, and eventually answers. “Connecting” or “Setting up” is your phone sitting in that gap, waiting.
So the delay is not on your device. It is on infrastructure you cannot see, run by a company you are not talking to. Restarting your phone does not make their server answer faster. This is also why the state can persist through reboots, factory resets and app reinstalls — none of those touch the thing that is actually stuck.
How long is normal? Usually minutes. Sometimes considerably longer — most of a day is not unheard of, and it is worth waiting through that before assuming something is broken. If it has been stuck for more than about a day, something genuinely is wrong and the steps below are the right order to attack it.
The six steps, in order
Do these in sequence. They are ordered by how often they turn out to be the answer, and the later ones are more disruptive than the earlier ones.
1. Confirm you have real mobile data
RCS registration needs a data connection, and on many networks it specifically needs mobile data rather than Wi-Fi for the initial registration. This trips people up constantly: they are sitting on home Wi-Fi with mobile data switched off to save battery, wondering why registration never completes.
Turn mobile data on. Leave Wi-Fi on too. Go somewhere with decent signal if you are in a basement. Then wait — do not immediately jump to step two.
2. Force the app to reconsider
Put the phone into aeroplane mode, wait about thirty seconds, and turn it off again. This tears down the network connection and forces a fresh registration attempt rather than leaving your phone waiting on a request that may have quietly failed.
This is the single most effective step and it costs you a minute. If it works, it usually works within a few minutes of coming back online.
3. Turn RCS off, restart, turn it back on
A clean re-registration. Go into your messaging app’s settings, find the RCS section, switch it off, and confirm it has actually turned off rather than gone back to “Connecting”. Restart the phone. Then turn it on again.
Restarting between the two matters. Turning it off and immediately on again often leaves the same stuck request in place.
4. Clear the messaging app’s storage
This is more disruptive, so it comes fourth. In your phone’s app settings, find your messaging app, open its storage section, and clear the cache first. If that does not do it, clearing the app’s storage entirely will reset its registration state.
Be careful here. Clearing storage on a messaging app can remove local message history if it is not backed up. Check that your messages are backed up before you do this, or accept the loss knowingly.
5. Check for a carrier settings update
Both platforms occasionally push small configuration updates from your carrier that change how the phone talks to the network. A pending one can leave messaging half-configured, particularly after you have changed networks or swapped a SIM.
On an iPhone, opening Settings and going to General, then About, prompts a carrier settings update if one is waiting. On Android the equivalent generally arrives on its own but a restart while connected to mobile data encourages it.
6. Contact your carrier, and ask the right question
If you are here, the problem is on their side, and the way you ask matters because front-line support often does not know what RCS is. Do not say “my texts aren’t working” — that gets you a SIM reseat and a goodbye.
Say this instead: “Is RCS provisioning enabled on my line?” That is the specific thing you need checked. If the person you are speaking to does not know, ask them to escalate to someone who does. Some lines simply are not provisioned, and no amount of work on your handset will change that.
Why new SIMs and ported numbers break this
If your problem started right after a SIM swap, an eSIM transfer, a new phone, or moving your number to a different carrier, you have almost certainly found your cause — and it is the reason this section exists separately.
RCS registration is tied to your line as it exists in one carrier’s system. When the number moves, the registration does not move with it. Worse, the old registration can linger on the previous carrier’s system for a while, and the two records disagree about who is responsible for your number. Your phone asks to register, and the answer is ambiguous or absent.
This normally resolves on its own within a day or two as the old registration expires. Step three above — a clean off, restart, on — noticeably speeds it up. What does not help is repeatedly toggling it, which just queues more requests behind the stuck ones.
The same thing happens on the dual-SIM case in a subtler form. If you have two lines and switch which one is your default for messaging, registration has to happen again for the new line, and the phone does not always tell you that clearly.
What is happening to your messages meanwhile
While RCS is stuck, your messages are going as SMS and MMS. They are arriving — this is not a delivery failure — but photos are being compressed hard, group chats have lost their features, and there are no read receipts or typing indicators.
There is usually a setting controlling whether messages automatically fall back to SMS when RCS is not available. Leave it on. Turning it off means messages that fail rather than messages that arrive in a degraded form, which is a much worse outcome.
When to stop trying
If you have worked through all six steps, waited a couple of days, and asked your carrier the specific question above, and it is still stuck — the honest answer is that your line probably is not provisioned for RCS, and that is a decision made by your carrier rather than a fault you can fix.
This is disproportionately common on prepaid and resold brands, where the host network’s RCS support does not automatically extend to the reseller’s lines. We keep what we know about that on one page, including our uncertainty about it. It is not satisfying, but it is better than spending another week clearing caches.
Check your own setup
While it is stuck, your messages are going as SMS. See exactly what that costs you in a conversation with a specific person.
Version facts on this page: not verified yet — the site-wide verification pass has not been completed. See the update log
Related guides
- How to Turn On RCS on iPhone (and What to Do If the Switch Isn't There)
- Does RCS Work on Wi-Fi Without Cell Service?
- "Not Delivered" to an Android Number: What It Actually Means
- The full feature-by-feature comparison
Published 1 September 2026. Last reviewed 1 September 2026. This guide depends on facts F13, F14, F17, F18, F19, F20 in our verification table — if one of those changes, this page gets rewritten and the change is logged in the update log.