Owners of Xiaomi, Redmi and Poco smartphones often face an intrusive notification that the advanced chat features (RCS) This message can appear even on modern devices with excellent communication, giving the false impression of hardware incompatibility. MIUI HyperOS and Google’s services for multimedia transmission.
The error is that the standard message application cannot properly activate the RCS (Rich Communication Services) protocol, which is designed to replace outdated SMS and MMS. Instead, the system blocks the ability to send high-quality photos, stickers and typing indicators, leaving the user confused. The error "chat functions are not available" is not fatal and is solved by software methods without the need for flashing.
The solution requires a series of steps to clean the cache, update the profiles of operators and, in some cases, manually activate hidden functions through ADB. Below we will discuss in detail all effective ways to restore the functionality of the messenger.
The causes of the error on Xiaomi smartphones
The main culprit is often not the phone itself, but the desynchronization of data between the Google Messages application and the operator’s servers. Android security system on Xiaomi devices can aggressively restrict the background operation of Google services, which leads to failures when registering a number in the RCS network.
The problem may also be caused by an outdated version of the messaging app or Google Play services themselves. If you haven’t updated system components in a long time, the encryption protocol may not match the server’s requirements, and some carriers have not certified their profiles to work with specific models of Chinese versions of smartphones.
It is worth considering the influence of third-party optimizers built into the MIUI shell. They can forcibly close the chat process, considering it to be consuming battery power, which interrupts the connection to the server at the most inopportune moment.
- 📱 Conflict of Google Messages and System Libraries.
- 📶 Unstable Internet connection at the time of registration.
- 🔒 Aggressive energy saving that blocks background processes.
- 🌍 Regional restrictions by the operator.
⚠️ Note: If you use third-party launchers or modified firmware, standard recovery methods may not work without additional access rights settings.
Compatibility check and component updates
The first step should always be to check the software's relevance.Make sure your messaging app is updated to the latest version through the Google Play Store.Often, developers will release patches that fix compatibility errors with specific carriers.
You also need to update three key system components: Google Play Services, Google Play Store and Messages. In some cases, updating only one of them does not work, requires a comprehensive approach. Go to the app store settings and check the App and Device Management section.
After updating all components, it is recommended to restart the device, which is necessary to ensure that new versions of the libraries correctly integrate into the system process and replace the old configuration files.
☑️ Verification of updates
If automatic updates don't work, try to clear the app data. Go to Settings → Apps → All apps → Messages and select Clear Data. Don't worry, your correspondence, if synced with your Google account, will save, but your chat settings will reset.
Setting up Google Messages and resetting RCS
The most effective method of fixing the error is to completely reset the chat state. Open the Google Messages app, click on the three dots in the upper right corner and select Settings → Chat Functions. Here you will see the connection status.
If the status is on "Connect..." or if it gives an error, you need to turn off the "Enable Chat Features" slider. Then wait a few seconds and turn it on again. The system will try to re-register your number on the Google server.
It is important to make sure that Google Messages is the default SMS app, not the standard MIUI Messaging app. Xiaomi shell often tries to return its settings, which causes conflict. Check this in the Apps section → Application Management → Three dots → Default apps → SMS.
| Action. | Where to find out. | The result |
|---|---|---|
| Shutting down the chat | Settings → Chat functions | Resetting the current session |
| Change of annex | Settings → Applications by default | Google Transfer of Control |
| Clearing the cache | Info about the application → Memory | Deletion of temporary files |
| Status check | Chat functions → Status | Indication "Connected" |
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If the status hangs on the "Connection..." for a long time, temporarily turn on the flight mode for 10 seconds, then turn it off and try again to activate.
Working with the profile of the communications operator
Sometimes the problem lies in the cached operator profile, which contains incorrect data about the support of RCS. In the settings of the chat functions, find the section "Company operators" or "Profile operator." If there is a possibility to update the profile, use it.
Some versions of Android have an engineering menu hidden to reset your network settings. You can try typing ##4636## into the dialer. From the menu that opens, select Phone Information and find the Update Profile or Refresh Profile button.
If standard methods don’t work, removal and re-installation can help. SIM-Turn off the phone, remove the tray, wipe the contacts. SIM-And then you put it back in, and when you turn it on, the phone will re-request the network configuration from the operator.
- 🔄 Updating the operator profile in chat settings.
- 📞 Use of the USSD-code-resetting.
- 🔁 Physical reset SIM-map.
- 📡 Switching between modes 4G/LTE and 5G.
⚠️ Note: When resetting network settings through the engineering menu, saved Wi-Fi passwords and Bluetooth device settings can be deleted.
Using ADB for Forced Activation
For advanced users who are not helped by standard methods, there is a way to activate via computer and debug over USB, which allows you to force the registration service to run, bypassing some system checks.
You will need to turn on the developer mode on your smartphone (7 times click on the build number in Settings → About phone) and activate “Debugging by USB”. Then connect the phone to a PC with ADB installed.
In the computer command line, enter a command to clean up the RCS service data:
adb shell pm clear com.google.android.gmsOnce you have completed the command, restart your phone. This step resets Google Play Services service data, which often shakes up stuck sign-up processes. Beware, after which you may need to re-authorize some Google services.
What if ADB can’t see the phone?
Alternatively, you can use the command to reset your message settings if you don’t want to touch the entire Google Play service:
adb shell pm clear com.google.android.apps.messagingThis method is more secure and affects only the messaging application without disrupting the operation of other services.
Alternative solutions and conclusions
If none of the above methods worked, it is possible that your carrier does not support RCS in your region or for your plan, in which case it is worth contacting the operator’s technical support for RCS support.
You can also consider installing the beta version of Google Messages through Google Play Beta. Often new features and fixes arrive there earlier than in the stable version. However, remember that beta versions may contain bugs.
In extreme cases, if you need RCS, and Xiaomi does not work consistently, you can use third-party applications that support this protocol, although Google Messages remains the most optimized option for the Android system.
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In 90% of cases, the problem is solved by a combination of: update the application + clean up the data + re-activate chat functions.
Following these instructions, you can return to your smartphone the functionality of modern messengers. Remember that the stability of work depends on a combination of factors: version of the software, operator settings and network status.