MI RCS Xiaomi Redmi: What it is, how it works and why it will work in 2026

Have you ever noticed the Xiaomi messenger inscription «MI RCS» near SMS-Or suddenly your messages in the standard Messages app are blue-checked, like messengers? It's not a bug or a virus, it's the technology. RCS (Rich Communication Services, which Xiaomi has integrated into its Redmi smartphones under the brand MI RCS.

In this article, we will understand what is MI RCS, How it differs from the usual SMS/MMS, How to turn it on (or off) on Redmi Note 12, Redmi 13C And we'll solve some of the most common problems, from no connection to sending errors. If you're using a Xiaomi smartphone and you want to get advanced messaging without installing third-party messengers, this guide is for you.

What is it? MI RCS and how it works.

MI RCS — It's the implementation of the standard. RCS (Rich Communication Services, from Xiaomi, built into the standard Messages app (com.android.mms «SMS New generation, which adds functions of messengers:

• 📧 Read Notices (Blue ticks, like WhatsApp)
• 📸 Large file transfer (up to 100 MB vs. 300 KB) MMS)
• 🎬 Video calls directly from chat (on some models)
• 🔄 Group chats with advanced features
• 🔒 Encryption (not end-to-end, but better than the SMS)

It's important to understand: MI RCS — It is not a separate application, but a function within a standard application. SMS-It operates through the operator's mobile network (as a SMS), But it uses the Internet to transmit data, and if you have mobile Internet or Wi-Fi on, the messages will be sent over the Internet. RCS; If not, they will leave as usual. SMS.

The technology is supported by most modern Xiaomi Redmi smartphones (starting with the Redmi Note 8 on the market). MIUI 12 and newer), but her work depends on three factors:

1. Support RCS your mobile operator (in Russia – MTS, Beeline, MegaFon, Tele2).
2. Activated function in the settings of the smartphone.
3. Availability of Internet connection (3G/4G/5G or wifi).

Differences MI RCS from SMS, MMS messenger

To understand whether it is worth using MI RCS, Compare it to the alternatives:

Key advantage MI RCS — It's not necessary to install additional applications. All functions work in the home. SMS-The phone is automatically pulled from the phone book, but there are also disadvantages:

• ⚠️ Operator Dependence: If your operator does not support you RCS, function won't work.
• ⚠️ Limited cross-platform: Messages between Xiaomi and Samsung can be sent as a RCS, But with the iPhone, just like that. SMS.
• ⚠️ Traffic consumption: although small (about 1-2 MB per month), but it is.

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If you often talk to iPhone users, MI RCS It will not give you any benefits – Apple still does not support it. RCS system level (at the time of 2026).

How to turn it on MI RCS Xiaomi Redmi: step-by-step instructions

Activation. MI RCS It takes less than a minute, but the path to settings may vary depending on the version. MIUI. Consider the universal method for most models (Redmi Note 11, Redmi 12, POCO X5 etc.):

1. Open the Messages app (the envelope icon).
2. Slip on three dots in the upper right corner → select “Settings”.
3. Go to the section "Additional Chat Functions" (names may vary).
4. Find the item "Chat functions" RCS» or «MI RCS» and switch on the switch.
5. Confirm activation through SMS (The confirmation code will come).

If the paragraph «MI RCS» Not in the settings, try it:

• 🔄 Update the Messages app via Google Play.
• 🔄 Update MIUI Up to the latest version (path: Settings) → The phone. → Updating the system).
• 🔄 Establish an alternative RCS-Customer (e.g. Google Messages) if your carrier supports RCS Google.

Available. SIM-support-card RCS|Smartphone connected to the Internet|Annex “Messages” updated|Version. MIUI less than 12-->

After activation, the message will appear next to the message “Chat” or «RCS», And the files that you send will be marked with a cloud icon:

⚠️ Note: Some Xiaomi firmware for China (e.g. China) ROM) function MI RCS It can be disabled at the system level, and only flashing to the global version will help. ROM).

Why? MI RCS Not working: Common mistakes and decisions

Even after the switch on MI RCS It may not work. Here are the most common problems and how to fix them:

1. Messages are sent as SMS, not RCS

Causes and solutions:

• 📶 No Internet: RCS It requires a network connection. Check the mobile Internet or Wi-Fi.
• 📱 Interlocutor doesn't support RCS: If your phone is old or your phone doesn’t support the technology, your messages will go away. SMS.
• 🔄 Sync failure: Reboot your phone or switch plane mode for 30 seconds.

2. “Chat functions failed to be activated” error

What to do:

1. Check if your operator supports you. RCS (list).
2. Update the Messages app to the latest version.
3. Clear the app cache: Settings → Apps → Messages → Storage → Clear the cache.
4. If nothing works, try using Google Messages instead of the standard client.

3. Messages do not reach or take a long time to send

Possible causes:

• 🌐 Poor Internet connection: RCS It's sensitive to network quality. Try switching from Wi-Fi to mobile Internet.
• 📵 Blocking by the operator: some operators restrict RCS-Call support for traffic.
• 🔋 Battery savings: Turn off optimization for the Messages app in the battery settings.

If the problem persists, check the settings. APN (access points:

1. Go to Settings. → SIM-maps and mobile networks → Access points (APN).
2. Choose. APN your operator (for example, Internet.mts.ru for MTS).
3. Make sure that the field "Type" APN» contains the rcs parameter (e.g. default,supl,rcs).
4. Save the settings and restart the phone.

MI RCS Google Messages: What’s Best for Xiaomi

Many Xiaomi users are faced with the dilemma of using the native Messages app with the MI RCS Or go to Google Messages (formerly Android Messages:

When to choose Google Messages:

• 🔄 If your operator does not support you MI RCS, supportive RCS Google.
• 📱 If you use multiple Android devices (such as a smartphone and tablet).
• 🔒 If you need additional features like a spam filter or backup.

When to stay MI RCS:

• 🎨 If you want full integration with the shell MIUI (topics, animations, notifications).
• 📶 If your operator works better with the native implementation RCS.
• 🔋 If you want to save resources (the native app consumes less battery).

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Google Messages – a universal solution for RCS, but MI RCS It's better optimized for the Xiaomi ecosystem. If you're having activation issues, try both.

How to turn off MI RCS Xiaomi Redmi

If you decide that MI RCS You don’t need it (for example, due to excessive traffic or unstable work), it’s easy to turn it off:

1. Open the message» → «Settings» → «Additional functions».
2. Find the item "Chat functions" RCS» or «MI RCS» and turn off the switch.
3. Confirm disconnection (resending may be required) SMS).

After the shutdown:

• All messages will be sent as normal. SMS/MMS.
• Read notifications and input indicators will disappear.
• Group chats will be limited (maximum 10 members, no history).

⚠️ Note: Some Xiaomi models (e.g. Redmi 10 with custom firmware) disable MI RCS may cause a malfunction of the work SMS. In this case, restart your phone or reset the settings of the Messages app».

If you want to remove the trace completely RCS from the system, you can reset the network settings:

1. Go to Settings. → SIM-maps and mobile networks.
2. Select “Reset Network Settings” (this won’t delete your data, but will reset it). APN and network parameters).

The future MI RCS: What to expect in 2026-2026

Technology RCS Xiaomi is growing rapidly and is not going to be left out:

• 🌍 Expanding support for operators: even small regional operators will start to connect RCS.
• 🔒 Improved encryption: it may be end-to-end encryption similar to Signal.
• 🤖 Integration with AI: automatic responses, chat summarization and other functions based on Xiaomi HyperOS.
• 📱 Cross-platform: Apple’s pressure could force it to support it RCS iPhone.

Xiaomi is testing new features in beta versions MIUI:

• Editing messages (like in Telegram).
• Responses to messages (emoji reactions).
• Cloud-based backup of chats.

If you want to stay up to date, follow the announcements in the official Xiaomi community or check for new features after the update. MIUI (Path: Settings → The phone. → Updating the system).

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MI RCS — It is not a temporary solution, but a future. SMS. By 2026, most operators and manufacturers will switch to this standard, so it is worth mastering it now.

FAQ: Frequent questions about MI RCS Xiaomi Redmi