You're trying to send SMS, But the message persists, and the "failed to send" or "no network" error appears on the screen? 90% The problem is incorrect settings. SMS-The center is a special number through which all your text messages are routed. On Xiaomi smartphones (including the Redmi line, POCO and Mi) the path to these settings is not always obvious, especially after updating to MIUI 14/15 Android 13/14, where the menu interface has been changed.
In this article, we will not only show you where the settings are hidden. SMS-center on different versions of firmware, but also explain why they can get lost (for example, after changing the firmware). SIM-You'll also learn how to manually write a number. SMS-It's a center for any Russian operator, from Beeline to Tele2, and what to do if the standard methods don't work. SIM-cards and give a checklist for diagnosing problems with sending SMS.
Why Xiaomi is not going to Xiaomi SMS What's in it? SMS-centre
Before looking for settings, it is important to understand how the messaging system works. SMS-centre (SMSC) — This is your mobile operator’s server that handles all outgoings. SMS. If the center number is not specified, is not current or blocked, the messages simply “hang” in the phone’s memory, without reaching the addressee.
Typical causes of failure:
- 🔄 Resetting to factory settings – erases all user settings, including the number SMSC.
- 📱 Replacement SIM-cards (for example, switching from MegaFon to MTS) – the new operator requires a different center number.
- 📡 Firmware update (MIUI Android or Android – sometimes resets your communication settings.
- 🛠️ Manual editing of system files (e.g., through ADB or MTK Engineering Mode).
On Xiaomi, the problem is complicated by the fact that in the latest versions of MIUI, the path to SMSC settings is hidden deeper than that of competitors (for example, Samsung or Honor), and in some models (for example, the POCO F5 or Redmi Note 12 Pro+), the menu may be absent altogether – it has to be “call” through an engineering menu or third-party applications.
Standard Method: Where to Find SMS-center in Xiaomi settings
If your smartphone runs MIUI 12-15 (or Android 11-14), try the following algorithm. Note that the path may vary slightly depending on the model and regional firmware.
- Open the Messages app** (an envelope icon, usually on the home screen).
- Put three points on it (⋮) in the upper right corner and select Settings.
- Scroll down to Additional or Advanced Settings (on some models – Settings) SIM-map).
- Select Settings SMS → Centre SMS (or SMS-centre).
- In the field, enter the center number for your operator (see the table below) and save the changes.
If the SMS Center item is not on the menu, then your firmware is hiding it, in which case, move to the next section with alternative methods.
☑️ Checking before change SMS-centre
SMS-center numbers for Russian operators (2026)
The table below shows the current SMSC numbers for major mobile operators in Russia. If your operator is not on the list, check the number from the support or on the official website.
| Operator. | Number. SMS-centre | Notes |
|---|---|---|
| MTS | +79160000000 | For all regions except Crimea and Sevastopol (+79780000000) |
| Beeline | +79030000000 | Relevant for new SIM-map (format) +7903...) |
| MegaFon | +79260000000 | For the Moscow region. in other cities may differ (for example, +79220 billion for the Urals) |
| Tele2. | +79500000000 | Single number for the whole of Russia |
| Yota | +79990000000 | It uses the infrastructure of MegaFon, but with a separate SMSC |
⚠️ Note: If you enter the number manually, make sure it starts with +7 (international format), not 8 or 7 without a plus, otherwise the system may not recognize the center.
💡
If, after entering the number, SMS-So if you're not sending a message at the center, you can try to add a symbol at the end of the number; (a semicolon: +79160,000,000; This helps on some firmware MIUI.
Alternative ways: how to find SMS-center, if it is not on the menu
On some Xiaomi models (especially custom firmware or MIUI Global), the standard path to SMSC settings can be disabled.
1. through the Engineering Menu (MTK Engineering Mode)
This method works on devices with MediaTek processors (e.g. Redmi 9A, POCO M3).
- Open the Phone app** and enter the combination: ##4636###.
2. Through USSD-team
Some operators allow you to know or reset the number SMSC assisted USSD-- You can try it:
- 📞 For MTS: dial *111*33# and follow the instructions.
- 📞 For Beeline: *110*111# (may differ by region).
- 📞 For MegaFon: *105*00#.
⚠️ Attention: USSD-If the request does not work, check the current command on the operator's website or through support.
3. Through third-party applications
If none of these methods worked, install one of the specialized SMS management applications:
- 📲 SMS Center (available on Google Play) – allows you to edit manually SMSC.
- 📲 Network Signal Info – shows the current center number (if given).
What to do if the app does not see SIM-map?
Features of setting up SMS-center on Xiaomi with two SIM-cards
On Xiaomi smartphones with Dual support SIM (For example, Redmi Note 11 Pro or Xiaomi 13T) Each slot has its own SMS-This means that if you use two SIM-maps of different operators, you will have to adjust SMSC separately.
How to do this:
- Open “Messages”** and go to settings.
- Select Settings SIM-maps (or Management) SIM).
- Put it on the right foot. SIM-map (e.g., map, SIM 1 SIM 2).
- Find the SMS Center and enter the number for the corresponding operator.
- Repeat the steps for the second. SIM-map.
⚠️ Attention: If you send SMS erroneous SMSC, The message will go through the center of another SIM-Cards (if configured) This can lead to additional tariffs or delivery errors.
💡
On smartphones with two SIM-Always check which card is selected by default for sending. SMS. This can be done in the settings of the “Messages” application in the section «SIM-default-card».
Frequent Mistakes and How to Avoid Them
Even after the right setup SMS-Xiaomi users are facing problems, and here are the most common mistakes and solutions:
- 🚫 No Network Error: Check if mobile data is enabled SIM-cards (in mobile network settings). Sometimes, disabling data transfer blocks and sending SMS.
- 🔄 Messages leave but don't reach: Make sure you have enough funds in your account (some operators block the service). SMS negative-balance).
- 📵 No number is saved. SMSC: This could be a firmware bug. Try resetting your network settings (Settings) → SIM-maps and mobile networks → Resetting network settings).
- 🔒 Access to the engineering menu is blocked: On some firmware (MIUI China) Engineering menu disabled, in which case only rooting or installing a global version will help. MIUI.
If neither of these methods worked, try temporarily installing the other. SIM-card (such as a friend or relative) and check if they are sent SMS. This will help to localize the problem: is it your phone or your carrier to blame.