Why Xiaomi does not send SMS: a full analysis of the problem and 10 ways to fix

SMS problems on Xiaomi, Redmi or POCO smartphones are one of the most common malfunctions users experience. Messages can freeze during the sending stage, leave with a delay of several hours or disappear from the chat without notifying the error. In 80% of cases, software failures, operator errors or incorrect settings are to blame. But how to distinguish a time glitch from a serious problem?

In this article, we will discuss all the possible reasons why SMS is not sent to Xiaomi, from the banal lack of network to hidden bugs in the MIUI firmware. You will get step-by-step diagnostic instructions, checklists and a table of compatibility of models with operators.

Important: Some solutions require super-user rights (root), but we will highlight such cases separately. Most methods work without additional rights and are suitable for all models, from the Redmi Note 10 to the flagship Xiaomi 14 Ultra.

Basic parameters verification: network, SIM-map

Before you dig deeper, rule out the obvious reasons. Start by checking three key components:

• 📶 Network signal level: If the status bar shows E (Edge) or H+ instead 4G/LTE, SMS They may be delayed or not at all. 3G network-setting.
• 📱 Situation SIM-Even a microscopic shift of contacts can interrupt communication. Remove the tray, check the map for scratches and insert back with a characteristic click.
• 💰 Account balance: Some operators (e.g. Tele2 or Yota) have a sending SMS Blocked with a negative balance even if credit is included.

Pay special attention to the flight mode. On Xiaomi, it is sometimes activated accidentally through Quick settings or gestures. You can swipe it from top to bottom, and the icon of the airplane should not burn orange.

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If you have two-sim Xiaomi, try sending it to the user. SMS other SIM-This will help to localize the problem: if the messages leave the second card, the operator of the first card is to blame, not the phone.

It is also worth checking the operator’s limits, for example, MTS and Beeline have restrictions on the number of SMS per minute (usually 5-10 pieces), exceeding the limit leads to a temporary blocking of the sending.

2. failures in the Messages app and MIUI cache

Xiaomi’s Messages app is known for bugs, especially in MIUI 13-14 versions. If SMS isn’t sent but calls and the internet are working, the problem is most likely in the messenger itself.

1. Cache cleanup. Go to Settings → Applications → Application Management → Messages → Storage → Clear cache.
2. Reset. In the same menu, click Reset (does not delete SMS, only returns settings to factory settings).
3. App update. Go to Google Play and check for updates for Messages.

If the problem persists, try an alternative messenger. Install Google Messages or Textra SMS and try sending SMS through them. If the messages go away, the standard Xiaomi app is to blame.

Critical error in MIUI 14.0.5-14.0.8: after updating, some users lose the ability to send SMS to short numbers (for example, 112 or 900), the solution is a rollback to MIUI 14.0.4 or waiting for a patch.

3. Conflicts with Dual SIM and network settings

Xiaomi smartphones with support for two SIM-Cards: Redmi Note 12 Pro+, POCO X5 Pros and others often face conflicts when sending SMS. The problem usually manifests itself in one of three scenarios:

• 🔄 Automatic switching SIM. If the option to request when sending is enabled in the settings SMS, The phone can "forget" the last card used.
• 📡 Incompatible network standards. One SIM work 4G (VoLTE, and the second in 2G, resulting in failure.
• 🚫 Some tariffs (for example, "For tablet" at MegaFon) do not support SMS.

To fix this:

1. Go to Settings. → SIM-maps and mobile networks → Settings SIM-map.
2. Turn off the option of automatic SIM for SMS.
3. For each SIM, manually select 3G Only or 2G Only (Experimental Mode).

Turn off automatic SIM selection for SMS|

Set the same network standard for both cards (e.g, 3G)|

Check the balance on both SIM|

Reboot your phone after the changes

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If the problem persists, try to disable the second. SIM For this, go to Settings. → SIM-Deactivate one of the cards if SMS It will go - the fault of the Dual settings SIM.

Blocking by the operator: blacklists and technical works

Mobile operators can block SMS sending for several reasons:

Most often, virtual operators (Tinkoff Mobile, SberMobile) rent networks from large providers, and when channels are overloaded, SMS can be discarded.

1. Try sending an SMS to another operator’s number (e.g., from Yota to MTS).
2. If the message is gone, the problem is routing inside your carrier’s network.
3. Call support and ask about the status of SMSC (SMS Service Center).

MTS|

Beeline |

MegaFon |

Tele2.|

Iota |

Tinkoff Mobile|

SberMobile |

Other-->

In 2023-2026, cases of blocking increased SMS - because of the number swapping, if you've recently changed SIM-If you had a card or a number, the operator could temporarily limit the functionality, and the solution was to visit the communication salon with your passport.

5. Software glitches: from MIUI to Android

MIUI firmware is known for its surprises, and SMS is no exception. Here are the most common software reasons:

• 🤖 Telephony service glitch. is responsible for communication and sometimes "hangs" after updates.
• 📦 Conflict with the shell MIUI. Especially relevant for POCO custom-made.
• 🔄 Wrong. APN-Even if the Internet works, SMS may not be sent.

For diagnosis:

1. Restart your phone in Safe Mode (press the power button → long tap on "Switch off" → "Safe Mode"). If the SMS goes away, the third-party app is to blame.
2. Check it out. APN. Path: Settings → SIM-maps and mobile networks → [choose SIM] → Access points (APN). The settings should be in line with the operator’s recommendations.
3. Reset network settings. In Settings → System → Reset settings → Reset mobile network settings.

If the problem occurred after the MIUI update, try to roll back to the previous version.

1. Download the full firmware version with Xiaomi Firmware Updater.
2. Rename the file to update.zip and place it in the root of the phone’s memory.
3. Go to Settings → About Phone → System Update → Three Dots → Select a firmware file.

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A firmware rollback will erase all data unless you use the official method through System Update. Always back up through Settings → Additional → Backup and Reset.

Hardware malfunctions: from antenna to motherboard

If none of the software methods worked, the problem could be the hardware.

• 📡 Damage to the antenna module, often after falls or moisture.
• 🔌 Oxidation of contacts SIM-It manifests as a periodic loss of the network.
• 🔧 Radio chip malfunction (Qualcomm module) RF or MediaTek MT6xxx).
• 🔋 Power problems of the communication module (bloated capacitors on the board).

How to diagnose:

1. Check IMEI. Dial *#06# – if Null or 0000 is displayed instead of a 15-digit code..., the communication module is faulty.
2. Test it. SIM-If it works, the problem is your Xiaomi.
3. Look at the tray. Signs of oxidation: green coating on the contacts, black dots, difficulty extracting.

For a temporary solution, you can try switching to eSIM (if the model supports it). SIM-But if the radio chip is to blame, the only thing that helps is repair.

⚠️ Warning: If the phone has fallen into water or been hit hard, don't try to disassemble it yourself. corrosion on the board may spread to other components, exacerbating the problem.

7. Alternative ways to send SMS

If standard methods do not work, use the workarounds:

• 🌐 Online services of the operator. MTS, Beeline and MegaFon have web versions for sending. SMS via personal office.
• 📧 E-mail to the SMS. Some operators support sending to species addresses 79XXXXXXXXX@sms.beeline.ru.
• 🤖 Bots in messengers, like a bot. @SMStoBot Telegram allows you to send SMS via the Internet.
• 📱 Bridge apps. Pulse. SMS Or MightyText synced. SMS via Google account.

It is suitable for corporate users. SMS-lockway API. For example, SMS.ru or TurboSMS allows you to send messages from your computer by linking a phone number.

If you need to send an urgent SMS and your phone is completely inoperable, use another gadget:

1. Put it in. SIM-card USB-modem.
2. Use the SMS function via Bluetooth (available on some Samsung and Huawei models).
3. Activate SMS forwarding service from the operator (redirects messages to another number).

FAQ: Frequent questions about SMS on Xiaomi