Why not send messages from the phone Xiaomi: a complete guide to troubleshooting

You clicked "Send" and SMS still hangs in the status "Send" or disappears without a trace? The problem with sending messages on Xiaomi smartphones is one of the most common complaints of users, but its causes are not always obvious. Unlike messengers like WhatsApp or Telegram, SMS depends on the operator, phone settings and even the version of the MIUI firmware. And if the messages stopped suddenly, it can be both software and hardware.

In this article, we will explore all the possible reasons why Xiaomi phones don’t send messages (including the Redmi Note 12, POCO X5, Mi 11 and others), and give step-by-step diagnostic and correction instructions, from basic checks (balance, network) to deep settings (APN, IMS reset), no water – only working solutions with the features of MIUI 14/15.

⚡ Spoiler: 60 percent of the time, it's 5 minutes to reset your network or update your firmware, but if it's a hardware failure (like a damaged modem), you might need a service center.

1. Checking the basic parameters: network, balance, SIM-map

Before digging deep into the settings MIUI, Make sure that the problem is not on the operator’s side or SIM-These three items eliminate 30 percent of all non-functional cases. SMS:

• 📶 Network signal strength if the indicator shows 1-2 If you divide or not, you're not going to leave your message. Try moving to a better coverage area or switching to a better coverage area. 2G/3G manually (sometimes) 4G VoLTE is glitching with SMS).
• 💳 Account balance: Some operators (e.g. Tele2 or Yota) have a sending SMS You can pay even at unlimited rates. USSD-command (e.g. *100# for MTS).
• 🔄 Reboot. SIM-Get the tray out of the map. SIM, Wash the contacts of the card carefully with a dry wipe and insert back in. Sometimes oxidation or dust disrupt communication with the modem.

If it's with the network and SIM All right, but the messages still don't go away, so move on to the next section. 9A) activate two SIM-map SMS You can only leave the main one:

Settings → SIM- Maps and Mobile Networks → Selection SIM for SMS

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If you use eSIM, try to temporarily disable it and leave only the physical SIM. MIUI 14 has a bug that causes eSIM to block SMS sending on some carriers.

2.APN settings: why they get confused and how to fix

APN (Access Point Name is the address that connects the phone to the operator's network, SMS They may not be able to go, even if the Internet is working. MIUI APN Sometimes they get lost after a firmware update or change SIM-map.

To check and reset the APN:

1. Go to Settings. → SIM-maps and mobile networks → [choose SIM] → Access points (APN).
2. Click on the three dots in the top right corner and select Reset to default values.
3. If the reset didn't work, create a new APN manually, and you can find the settings on your carrier's website (for example, for Beeline, this is Internet.beeline.ru).

🔍 Signs of incorrect APN:

• 📵 Messages leave but do not reach the recipient (Sent status, but no answers).
• 🌐 The Internet works, and SMS — No, or vice versa).
• ⚙️ In the settings APN displays a warning “Not saved” or “Authentication error».

If after resetting the APN problem remains, try to manually prescribe the settings for SMS. For most Russian operators, the following settings are suitable:

IMS and VoLTE malfunctions: how it affects SMS

Modern Xiaomi smartphones (starting with the Redmi Note 10 and later) use IMS (IP Multimedia Subsystem) technology to transmit voice calls and SMS over 4G (VoLTE and ViLTE). If this service does not work correctly, messages can get stuck in the sending status or leave with a delay.

🔧 How to check and reset IMS:

1. Open the dial and type ##4636##.
2. Select Phone Information → scroll down to the IMS Service Status block.
3. If you are Disconnected or Error, try:

• ✅ Turn on/off VoLTE in the settings SIM-map.
• 🔄 Reboot the phone.
• 📱 Reset your network settings (see the next section).

Critical information: On some Xiaomi models (e.g. POCO F4), the bug with IMS appears after upgrading to MIUI 14.1. In this case, only a rollback to the previous firmware version or manually installing a patch through TWRP will help.

If the IMS is working normally but the SMS is still not leaving, check if the Wi-Fi Calling mode is activated, sometimes it conflicts with sending messages:

→ SIM- Maps and Mobile Networks → [select SIM] → Wi-Fi Calling → Disable

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If after the VoLTE shutdown SMS They did, but they lost calls through 4G — You can go to the operator, maybe yours. SIM No VoLTE support activated.

4. Network reset and factory reset

If previous methods didn’t work, it’s time for “heavy artillery” — resetting network settings or completely resetting the phone — to eliminate 90% of the software failures associated with SMS.

⚠️ Warning: Network reset will delete all stored Wi-Fi passwords, Bluetooth settings and mobile internet data.

Resetting:

Settings → About phone → Resetting → Resetting Wi-Fi, mobile network and Bluetooth settings

Hard reset (if nothing helps):

Settings → About phone → Resetting → Delete all data (reset to factory settings)

After discharge:

Insert SIM-map and wait for registration on the network|Check the balance of the account|Update the firmware to the latest version|Set up APN manually (unless automatically pulled up)|Send a test. SMS on the second number-->

If, even after a complete reset, the SMS does not go away, the problem may be in the hardware (damaged modem, antenna) or blocking by the operator (for example, due to suspicion of spam), in which case contact the service center or the operator.

5.Firmware problems: MIUI bugs and how to get around them

MIUI is a customized shell from Xiaomi, and some versions of it have critical bugs that prevent sending SMS.

• 🐞 V MIUI 13.0.4 for Redmi Note 11 was a bug that caused messages to leave only after the reboot.
• 🔄 V MIUI 14.0.2. POCO X4 Pro SMS They stopped sending after activating the second slot. SIM.
• 📱 V MIUI 15 (beta) some users complained about “sending” messages when Wi-Fi Calling was enabled.

How to check and correct:

1. Update your firmware to the latest stable version: Settings → About Phone → System Update If there are no updates, check manually on the MIUI Downloads website.
2. If the bug appears after the update, try to roll back to the previous version via Fastboot or Recovery.
3. Install an alternative SMS application (like Google Messages or Textra) – sometimes the standard Messages app in MIUI doesn’t work properly.

🔍 How to find out the version MIUI:

Settings → The phone. → Version. MIUI

If your version matches one of the “problems” (see the list above), try to find a patch on the 4PDA or XDA Developers forums.

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Before rolling back the firmware, back up through Settings → Additional → Backup and Reset → Local Backup. This will save your SMS and contacts.

6. Blocking by the operator: spam, restrictions, technical works

If you've ruled out all the technical reasons, but the SMS still doesn't go away, it could be the carrier's fault.

• 🚫 Blocking for spam. If you sent a lot of messages to short numbers (for example, for voting or services), the operator could temporarily restrict the sending. SMS notified.
• 🔒 Tariff restrictions: Some tariffs (for example, "For tablet" at MegaFon) do not support sending SMS. Check the conditions with the operator.
• 🔧 It's rare, but sometimes the operator has a malfunction. SMSC (centre SMS). Check the status of services on the operator's website.

⚠️ Note: If you are using a virtual SIM (For example, from Tinkoff Mobile or SberMobile, make sure that the service is available. SMS It's on in your personal account. Some virtual operators default to disabling the sending. SMS.

How to check the lock:

1. Call the operator hotline (numbers: MTS - 0890, Beeline - 0611, MegaFon - 0500, Tele2 - 611).
2. Send. USSD-Request for status checks (for example, *111*0887# for MTS).
3. Try sending an SMS from another phone to your number – if it doesn’t come, the problem is definitely on the operator’s side.

7. Hardware malfunctions: when to carry in the service

If none of the software methods worked, the cause could be a physical breakdown of the phone.

• 📡 Poor network reception even in areas with good coverage (may indicate a damaged antenna).
• 🔌 The phone can't see. SIM-card or sees it only after rebooting (modem or slot problem).
• 🔥 Overheating in the area of the upper part of the phone (may indicate a malfunction of the modem chip).
• 💥 Messages don’t go away after falling or getting moisture (even if the phone is turned on).

🛠️ What you can do on your own:

• Check it out. SIM-map on another phone.
• Try another SIM in your Xiaomi.
• Reset your phone to factory settings (see below if it doesn’t help).

If the problem persists, take the phone to the service center.

⚠️ Warning: If the phone was in water, don't turn it on and try to dry it with a hair dryer! Oxidation of contacts can aggravate the problem.

FAQ: Frequent questions about SMS on Xiaomi