Why don't you go? SMS Xiaomi phone: full analysis of causes and solutions

You are trying to send an important message, but SMS Does not leave the Xiaomi phone, and in the status hangs “Send” or “Error”? the problem is found on models from the Redmi Note 12 to the flagship Xiaomi 14 Ultra, and the reasons can be a dozen – from the banal lack of network to hidden failures in the firmware MIUI. In this article, we will not only list possible malfunctions, but also give specific instructions taking into account the features of Xiaomi phones, including hidden settings and diagnostic codes.

The problem is often selective: for example, SMS They don't just go to the numbers of certain carriers (MTS, Beeline) or when you connect to Wi-Fi, although calls work fine. We'll analyze all scenarios, from hardware breakdowns (damaged communication module) to software bugs (conflict with Dual Apps or the Internet). VPN). At the end of the article you will find FAQ Respond to rare cases that are not covered even in service centers.

1. Checking basic settings: what 90% of users miss

Before you sin on a firmware or iron malfunction, make sure that the problem is not in the basic settings. Experience shows that 7 out of 10 cases are not the problem. SMS not sent due to a disabled message center or incorrect selection SIM-map.

Start with the obvious, check the activity. SIM-map:

• 📶 Network signal: The status bar should display a coverage icon (e.g, 4G+ or 5G). If you have a cross or the words “Emergency Calls Only», SIM-card not registered online.
• 🔄 Reboot the communications module: turn on Flight Mode for 30 seconds, then turn off. This will reset the connection to the base station.
• 📋 Centre SMS-Messages: Go to Settings → SIM-maps and mobile networks → [yours SIM] → Message center. The field must contain a number in format +79991234567 (check it with the operator).

If the message center is empty or contains an incorrect number, enter the correct one (for each operator it is different). +79260000900 for Beeline — +79030009000 After saving try sending SMS freshly.

⚠️ Attention: On some firmware MIUI (especially on the Redmi 9A/9C) The message center field can be hidden. To open it, click on the line "Access point name» (APN) 5 successively.

Another nuance is priority. SIM-card SMS. If you have two SIMs, the system can automatically select the one that is not tied to the tariff with the SIM. SMS. To set priority manually:

1. Open the Settings. → SIM-maps and mobile networks.
2. Choose. SIM-map from which you want to send SMS.
3. Activate the option to use for SMS (on some models, by default for messages).

2 Failures in the firmware MIUI: how to fix without reset

If the basic settings are in order, but SMS They don't go anyway, it's the firmware's fault. MIUI It's known for its features, which sometimes break standard functions. Consider 3 typical scenarios:

Scenario 1: Conflict with Dual Apps (Cloning Apps)

Dual Apps (found on Xiaomi Mi) 10/11, Redmi Note 10 Pro) creates a copy of the messenger, which can block the sending SMS. To check:

• 🔍 Open the Settings. → Annexes → Dual Apps.
• 📱 Remove the Messages app clone (if any).
• 🔄 Reboot the phone.

Scenario 2: Messages app cache error

The cache may contain outdated data that prevents the shipment.

1. Go to Settings → Applications → Application Management → Messages.
2. Click Clear Cache (not data!).
3. If the option is not available, press Warehouse first.

Scenario 3: The failure of com.android.mms

It is a system process responsible for MMS/SMS. If he's "hanging," a forced stop will help:

1. Open the Settings. → Annexes → All applications (three dots at the top) → Show system-based).
2. Find com.android.mms (or Messaging).
3. Press Stop Stop. → OK.

Check out the Dual Apps|Clear the Message cache"|Stop com.android.mms|Update. MIUI last-minute-->

3.Problems with SIM-The card and slot: when the iron is to blame

If the software methods do not help, check the physical condition. SIM-Even a microscopic chip or contact oxidation can interrupt communication.

Signs of hardware problem:

• 📵 SMS They don’t send, but the calls work (or vice versa).
• 🔌 The phone can't see. SIM-post-reset.
• 📱 On the lock screen, a message is displayed. SIM-map, though it's in place.

What to do:

1. Extract. SIM-And look at the map, and it's got to be bright, it's got to be intact, it's got to be scratchless, it's got to be contactless.
2. Check the slot: gently blow it with compressed air (such as a can of keyboard cleaning).
3. Try another one. SIM-card (for example, from the second phone) if it is with it SMS They are going to go, the problem is in your SIM.
4. Switch the slot: if you have Xiaomi with two slots (like Redmi Note 11 Pro)+), insert SIM to another slot and check the sending.

⚠️ Attention: On Xiaomi models 12T/13 Lite second hybrid slot (SIM + microSD. If you use a memory card, the second slot is SIM It can be turned off automatically. Check the settings. → SIM-maps and mobile networks.

If you have all the manipulations, you may have a damaged communication module (an antenna switch or radio chip) that requires a diagnosis at a service center, but before you go there, try the diagnostic code to check the antenna.

##4636##

In the menu that opens, select Phone Information and see Service status SMS. If there is an Inaccessible or Error, this confirms a hardware malfunction.

4. Operator Block: Why SMS They don't go to specific numbers.

Sometimes the problem isn't with the phone, but with the carrier's restrictions.

• 📵 Lockdown SMS-traffic (for example, if you have a negative balance or suspected spam).
• 🔒 Restriction on international SMS (Even if the number is Russian, but registered abroad).
• 📡 Roaming problems (if you are in another country).

How to check:

1. Call the hotline of your operator (numbers: MegaFon - 0500, Beeline - 0611, MTS - 0890, Tele2 - 611).
2. Ask if there is a blockage. SMS-Check if the package is active on your number. SMS (On some tariffs they are paid).
3. Try sending it. SMS a short operator number (e.g. 111 for Tele2), if it leaves, the problem is routing to other numbers.

If the operator has confirmed the blocking, ask to unlock the service, sometimes it can be done independently through the personal account (Services or Locks section).

Special case: SMS Do not go to the numbers of other operators

This is a typical problem with firewall roaming, for example, if you are a MegaFon subscriber but you are in the coverage area of Beeline, SMS MTS numbers may not be delivered:

• Temporarily disable Automatic Network Selection in Settings → SIM-maps and mobile networks → [yours SIM] → Choice of network.
• Select your operator’s network manually (e.g., MegaFon-RU).
• If your operator doesn’t appear on the list, there’s a problem with the coverage (try moving elsewhere).

5. Conflict with VPN, firewall or antivirus

Security applications (Avast, Kaspersky, 360 Security) VPN (NordVPN, ProtonVPN can be blocked SMS-This is a very important part of the problem of traffic, which is that it's a potential threat. MIUI, where system permissions often conflict with third-party programs.

How to diagnose:

1. Turn it off. VPN (If it is on, try sending it. SMS.
2. Launch your phone in Safe Mode (click the power button) → Safe regime? If SMS They leave, one of the installed applications is to blame.
3. Check permissions for the Messages app: 📲 Go to Settings. → Annexes → Communications → Permits. 🔓 Make sure it's on. SMS, Telephone and Warehouse.

List of applications that are often blocked SMS:

If you use AdGuard or a similar ad blocker, check if traffic is filtered. SMS. In AdGuard settings, go to Filters → System applications and disable filtering for com.android.mms.

💡

On some firmware MIUI 13/14 The built-in firewall can block SMS. To turn it off, go to Settings. → Memory. → Autostart and add the Messages app to exceptions.

6. Network settings reset and extreme measures

If neither of these methods works, you have to reset your network settings or completely reset your phone, which is a radical measure, but it works in 95 percent of cases where the problem is caused by a software failure.

Reset network settings (does not delete data, but resets Wi-Fi, Bluetooth, mobile network):

1. Go to Settings. → SIM-maps and mobile networks → Resetting mobile network settings.
2. Confirm the action.
3. After restarting, re-enter the settings. APN (They should be automatically checked, but it is better to check manually).

Resetting instructions:

1. Go to Settings → About the phone → Reset settings.
2. Choose to erase all data.
3. Enter. PIN-code (if requested) and confirm.

⚠️ Note: On Xiaomi models with a blocked bootloader (Redmi) 9A, POCO M3) You may need to link to the Mi Account that activated the phone from the first time, and if you don't remember the data, don't reset, otherwise the phone will become a brick".

💡

Resetting network settings solves a problem 80% of the time if it is configuration-related APN or a conflict of communication protocols.

7. Alternative ways to send SMS if nothing helps

If the standard methods did not work, and there is no possibility to contact the service center, use alternative methods:

1. Online services of operators

Most operators are allowed to send SMS web-based:

• 🌐 MegaFon: Personal Account → «Communications».
• 🌐 Beeline: my beeline → «SMS».
• 🌐 MTS: MTS Personal Account → «Services» → «SMS».

2 Third-party messengers with SMS support

Apps like Google Messages or Textra SMS They can bypass system limitations. MIUI:

1. Install Google Messages from the Play Market.
2. Make it the default application for SMS In Settings → Annexes → By default.
3. Try sending a message.

3. USSD-teams to check balance and services

Sometimes. SMS They don't send because they don't have money in their account or they block the service. SMS:

• 💰 MegaFon: *100#
• 💰 Beeline: *102#
• 💰 MTS: *100#
• 📧 Television2: *155*1# (check-up)

If the account is zero, replenish the balance (even 1 ruble) - sometimes this is enough to unlock SMS.

FAQ: Responses to rare and specific cases