Why Xiaomi does not come SMS: all the reasons and solutions

You're waiting for an important message, but it's not coming to your Xiaomi? SMS delivery is one of the most common complaints of smartphone users. Unlike instant messengers, which show the status of the send, regular text messages can get lost without notice. In this article, we'll look at all the possible reasons why Redmi, POCO or Black Shark don't get SMS, from trivial setting errors to hidden MIUI firmware bugs.

The peculiarity of the problem is that it can manifest itself in different ways: sometimes messages do not come only from certain contacts, sometimes from everyone, and in some cases, the message is not received. SMS We're not going to just stick with standard tips like "reset your phone" (although they sometimes work), but we're going to go into technical details, including settings. APN, Dual conflict SIM If you've tried the obvious solutions, read on, here you'll find unique diagnostics that are not offered by support.

1.Problems with SIM-Map: from mechanical damage to incompatibility

The first thing you need to check is yourself. SIM-Even if it looks normal on the outside, it doesn't guarantee that it's going to work. SIM-Cards to another slot (if you have duality) SIM). If messages start to arrive, the problem is in the first slot (possibly contacts have oxidized or the connector is damaged).

Less noticeable is the incompatibility of standards. Modern Xiaomi (especially models with support) 5G) They may conflict with the old ones. SIM-cards issued before 2018, such as the Redmi Note 12 Pro+ It does not always work correctly with Mini-SIM cards, even if they are trimmed to Nano-SIM:

• 🔄 Form factor SIM: Use only the original Nano-SIMs, not hand-cut ones.
• 📡 Support for standards: Check with the operator if yours is compatible SIM with VoLTE and ViLTE (this affects the SMS).
• ⚡ Speed of operation: If SIM-card over 5 years old, it can slow down the processing of messages.

⚠️ Note: If you have recently changed operator and used eSIM, check if the service is activated «SMS above IP» (Without it, messages may not reach some Xiaomi models, such as Xiaomi. 13T Pro.

How to check SIM-card?

Turn on flight mode for 30 seconds, then turn off.

Try sending an SMS to yourself from another phone.

Check if IMSI cards are determined in Settings → About phone → General information → SIM status

Set another one. SIM-The card (knowingly working) in the same slot-->

2. APN settings errors: why the operator does not deliver SMS

APN (Access Point Name) is not only responsible for the Internet, but also for routing SMS. If the settings are lost (for example, after updating MIUI or resetting), messages can go nowhere, especially on POCO F5 and Redmi K60, where Xiaomi sometimes automatically substitutes the wrong values.

How to check and fix the APN:

1. Go to Settings. → SIM-maps and mobile networks → [yours SIM] → Access points (APN).
2. If there are several profiles, choose the one that matches your operator (for example, Internet.beeline.ru for Beeline).
3. Click on the profile and check the following settings: MMSC should be specified (e.g. http://mmsc). APN type should be default,mms,supl. MMS port is usually 8080 or 9201.

If the profile is not available, create it manually (options can be found on the operator's website).

If SMS still do not come after editing APN, try resetting the network settings:

Settings → System and device → Additional → Resetting settings → Resetting mobile network settings

⚠️ Attention: On some firmware MIUI 14 after dumping APN You can't edit the settings manually, and then you can just flash it or go to the service center.

3.Dual SIM Conflicts: Why One Card "Muffles" Another

If you have Xiaomi with two SIM-For example, the Redmi Note 11 Pro+ or POCO X5 Pro, the problem may be a priority conflict. MIUI single-handed SIM-card SMS, If it is inactive (for example, there is no network), the messages may not reach the second one.

How to set up Dual SIM correctly:

• 📶 Network Priority: Go to Settings → SIM-maps and mobile networks → Priority SIM-Call cards and select “Always Ask” or prioritize the card you want to see. SMS.
• 🔄 Standby mode: In the same menu, check if Dual is enabled. SIM Dual Standby (DSDS). If not, turn on, or one card will turn off when the other is active.
• 🚫 Operator Blocking: Some operators (e.g. Yota or virtual operators) MVNO) block SMS second SIM, If it is not the “main” tariff.

Another nuance: Xiaomi with MediaTek (like Redmi 10C) sometimes gets SMS routing between slots, so to reset it, do:

Settings → Applications → Application Management → Three points (menu) → Show system → Find “Phone” → Storage → Clear cache

Redmi (Series Note, A, K, etc.)

POCO (F, X, M, etc.)

Black Shark

Xiaomi (flagships: 13, 14, etc.)

Other-->

4. SMS blocking by the operator: how to check and what to do

Mobile operators can block SMS delivery for several reasons, and they don't always notify the user.

• 💰 Unpaid bill: Even if you have enough money on your balance sheet, the operator may limit your balance. SMS due to late payment (relevant to contractual rates).
• 🔒 Suspicion of spam: If you sent a lot of messages in a short period (such as a newsletter), the operator may temporarily block incoming messages. SMS.
• 📵 Unsupported region: When roaming, some operators turn off delivery SMS to save traffic (for example, MegaFon in some CIS countries).
• 📱 Incompatible tariff: Tariffs such as “Internet card” or “For tablet” often do not support SMS.

How to check the lock:

1. Call the operator’s short number (e.g. *111# for MTS) and request the status of the services.
2. Try sending an SMS to another number – if it doesn’t, the problem is on the operator’s side.
3. Put it in. SIM-card to another phone (not Xiaomi) and check if messages are coming.

If the lock is confirmed, contact operator support and clarify the reason.

• Payment of debt (even if it is 1 ruble).
• Confirmation of identity (passport data).
• Change the tariff plan to a supportive SMS.

💡

If the operator refuses to unlock the SMS, try sending a complaint through an official application (for example, “My MTS” or “My Beeline”).

5. Software glitches: from cache to MIUI bugs

MIUI is not just a shell, but a whole host of system services that can conflict with each other, and if SMS doesn't come, it could be:

• 🗑️ Clogged cache of the application “Messages” or “Phone».
• 🔄 Update conflict (for example, after upgrade from the MIUI 13 on MIUI 14).
• 🛑 Errors in the work of com.android.telephony - the system process responsible for calls and SMS.

Step-by-step instructions for elimination:

1. Cache Cleanup: Settings → Applications → Application Management → Messages → Storage → Clear the cache The same thing is done for the Phone application.
2. Reset network settings (see the section on APN).
3. Check system updates: Settings → About phone → System update If an update is available – install it, even if it weighs several gigabytes.
4. Recoil to factory settings (extreme case): Settings → The phone. → Resetting settings → Resetting all settings ⚠️ Note: Before reset, save a backup through Settings → Additionally. → Backup and reset.On Xiaomi with Snapdragon 8 Gen 2 (like Xiaomi 13 Ultra), resets can take up to 15 minutes - don't interrupt the process!

If the problem has occurred after the MIUI update, check out the reviews on forums (like 4PDA or MIUI SU).It may be a known bug and Xiaomi has already released a patch.

6. Hardware malfunctions: when the "iron" is to blame

If all the software methods have been tried and SMS still fails, the problem may lie in the phone's hardware.

• 📶 The communication module (antenna or chip) is damaged RF). Often occurs after falling or getting moisture.
• 🔌 Oxidation of contacts SIM-Maps, even if the phone sees the network, SMS They may not be able to get through due to poor contact.
• 🔋 Malfunction of the motherboard (for example, burnt tracks to the module) IMEI).

How to diagnose a hardware problem:

1. Check the phone's IMEI: *#06# If Null or Invalid is displayed instead of a 15-digit code, the communication module is faulty.
2. Test the network: Settings → SIM-maps and mobile networks → [yours SIM] → Type of network if the phone does not catch 4G/LTE (only 3G or 2G), This is an indirect sign of problems with the module.
3. Examine the SIM-slot for oxidation or contamination. Use alcohol and a soft brush to clean.

If you have any suspicions, please contact the service center.

⚠️ Note: Xiaomi with Snapdragon 888 chip (such as Black Shark 4 Pro) often encounters a bug in which the phone “loses» IMEI After overheating, in which case only the flashing through the EDL-regime.

7 Third-party applications and viruses: who interferes with SMS

Few people know, but some applications can block or intercept SMS without your knowledge.

• 🔒 Antiviruses (e.g. Avast or 360 Security).
• 📊 Optimizers (type) DU Speed Booster or Clean Master).
• 📱 Launchers (for example, Nova Launcher or Microsoft Launcher).
• 🕵️ Spyware (if the phone was previously in the wrong hands).

How to find and resolve conflict:

1. Launch your phone in Safe Mode: Press the Shutdown button → Additional → Safe Mode If SMS comes in this mode, one of the installed applications is to blame.
2. Check Application Rights: Settings → Applications → Permissions → SMS Make sure that only system applications have access to SMS.
3. Scan your phone for viruses with Malwarebytes or Kaspersky Mobile.

Pay particular attention to applications that requested ADMIN or SMS permissions when installing, such as Truecaller or GO SMS Pro, which may conflict with the standard Messages app.

💡

If the problem occurs after you install a new app, delete it and restart your phone, which solves the problem with SMS in 70% of cases.

8. Features of firmware and custom ROM

If you use informal firmware (like LineageOS, Pixel Experience, or custom MIUI from third-party developers), the problem with SMS may be related to:

• 🔧 Lack of proprietary drivers for the communication module.
• 📡 Incorrect settings RIL (Radio Interface Layer).
• 🔄 A kernel conflict (for example, if the firmware is built under Snapdragon, and you have MediaTek).

How to diagnose:

1. Check the firmware version in Settings → About Phone → MIUI version.
2. Check if your model supports official updates on MIUI Download.
3. If the firmware is custom, look for a theme on XDA Developers – there are often patches to fix SMS.

For owners. POCO F3 or Redmi K40 firmware MIUI EU There's a known bug: SMS They don't come if you have Wi-Fi Calling enabled, so the solution is to disable that feature in Settings. → SIM-maps and mobile networks → [yours SIM] → Wi-Fi Calling.

If you are not sure about your skills, it is better to return the official firmware through the Mi Flash Tool.

1. Download the official firmware for your model from the Xiaomi website.


2 Unlock the bootloader via fastboot oem unlock.




3. Run your phone in EDL mode using the Mi Flash Tool.

FAQ: Frequent questions about SMS issues on Xiaomi