Xiaomi smartphone owners in the Luhansk People’s Republic often face the need to manually adjust network settings when changing operators or buying a new device. LUGACOM provides coverage in the region, but the automatic configuration of messaging services is not always correct, due to the features of MIUI and HyperOS firmware, which may not have relevant profiles for local operators.
The inability to send or receive text messages can be a critical issue, especially when you need to confirm your login to banking applications or obtain authorization codes. In this detailed guide, we will discuss all the stages of setting up, from installation to installation. SIM-The manual parameters of the message center are prescribed before the card is written, and careful follow of the instructions will avoid common errors and restore full functionality of the communication center.
Before you start to complex manipulations in the engineering menu, you need to make sure that the device is ready. SIM-The card is active, the balance sheet has the means to test the shipment, and the phone itself is in the zone of confident reception of the signal, sometimes the problem lies not in the settings of the smartphone, but in the status of the service on the operator's side.
Primary installation SIM-mapping and signal-checking
The first step is to physically install the communication module. In modern Xiaomi models, the tray for the communication module is designed to be used. SIM-The cards are usually paired with a memory card slot or are located on the end of the case. Use a special clip from the kit to remove the tray. It is important to set the card up with a chip, keeping the cutout shape so as not to damage the contacts.
If you see a 4G or H+ icon next to the LUGACOM operator name, the basic registration on the network has been successful, but the lack of ability to send SMS while the Internet is running indicates that the message center (SMSC) settings are incorrect.
If the phone says "No network" or "Only emergency calls," try restarting the device. In rare cases, retrieving and re-installing the SIM card when the phone is off helps, and make sure the tray is tightly closed and has no backlash.
⚠️ Note: Do not attempt to send a text message if the signal indicator is completely missing or the red cross is on, in which case you must first solve the problem with the coverage or integrity. SIM-map.
Check if you're on yours. SIM-map PIN-If you turn on your phone, Xiaomi will ask you to enter it, and if you enter it incorrectly three times, the card will be blocked, and you will need to enter it. PUK-code that can be found on a plastic card holder issued when buying a SIM.
Automatic setting through incoming message
The easiest way to activate services is to use the automatic configuration. LUGACOM often sends greeting messages with settings when you first register a new device on the network. SIM-cards, wait. 5-10 minute.
If you receive a message suggesting you set up the Internet and MMS, follow the instructions on the screen. MIUI usually recognizes the profile itself and prompts you to apply the settings, you will need to enter the confirmation code specified in the text of the message, or just click the "Accept" button.
If an automatic message does not arrive, you can request it forcefully, often just send an empty SMS to a special service number or call support, but manually configuring through the phone menu is a more reliable and versatile method.
- 📱 Wait for an incoming message from the operator with configuration options.
- ✅ Click "Accept" or "Install" in the window that appears.
- 🔒 Enter a security code if required (usually 0000 or 1234).
- 🔄 Reboot your smartphone to apply changes.
It is worth noting that automatic settings may not update the SMSC setting, which is critical for text messages, so even after a successful automatic setup, it is recommended to check this setting manually by following the instructions in the next section.
Manual Message Center Configuration (SMSC)
The most common reason you can't send a text message to Xiaomi is because you have the wrong message center number, which is the address on the operator's network that all your text messages go through, and if it's wrong or empty, the message won't go away.
To check and change your settings, open the standard Messages app. Click on the three dots in the upper right corner (or menu button) and select Settings. Next, look for "Additional" or "Settings" SIM-map".
In the control menu SIM-Select your LUGACOM card with the card. Find the Service Center field. This should have an international number. +380643900999 If there is another number or a field is empty, enter this one manually and save it.
+380643900999After entering the number, be sure to click on the "Save" or "Install" button. If the system does not allow you to save the changes, try temporarily switching the network mode to "2G Only", save the number, and then return "4G/3G/2G".
☑️ Checking settings SMSC
⚠️ Note: Enter the message center number strictly in an international format, starting with a plus. Using eight instead of country code can lead to a delivery error.
Configure APN settings for multimedia messaging
Although conventional text SMS does not require Internet access, sending and receiving MMS (pictures, voice messages in some implementations) requires the correct setting of the APN access point. Without this, attachment messages will come as links or will not be downloaded at all.
Go to the Settings menu → SIM-maps and mobile networks. SIM-Map LUGACOM and click "Access Points (APN)". In the upper right corner, click plus or "New Access Point".
Fill in the fields below. The remaining fields can be left blank or by default. Pay special attention to the APN type field, where the case of letters can have a value.
| Parameter | Meaning |
|---|---|
| Name. | LUGACOM MMS |
| APN | internet |
| User name | (leave empty) |
| Password. | (leave empty) |
| Type APN | default,supl,mms |
After filling in all the fields, click the menu (three dots) and select Save. Then be sure to activate the created access point by placing a marker next to it, rebooting the device will fix the result.
Some HyperOS firmware may require a reboot after a new hotspot is created. If the Internet is available but MMS is not working, try to prescribe only mms in the APN Type field, keeping the profile as separate, and switch to it if necessary.
Diagnostics of problems with sending messages
If the messaging center and APN settings are correct but SMS is not sent, the problem may lie in an application conflict or system failure. Xiaomi's standard Messages app sometimes accumulates cache errors.
Try to clear the application data. Go to Settings → Apps → All apps, find Messages (or Mi Messaging). Select Clear → Clear All data. This won't delete your texts if they're synced to the cloud or saved to SIM, but it will reset the application itself.
Also, check if the security service is blocked, and the Security app (green icon) has an Antispam feature, and make sure that your number or short carrier numbers are not blacklisted by mistake.
- 🧹 Clear the cache and data of the application "Messages".
- 🛡️ Check the lock lists in the Security app".
- 📶 Make sure that no “Do Not Disturb” mode is enabled for contacts.
- 🔄 Reset network settings to factory (via the settings menu).
An important aspect is the format of the message. If you send a long text, it can break into several parts. Make sure that there is enough money on the balance sheet to send a series of messages, since the operator charges each part separately.
The specifics of the Mi services and two SIM-map
Xiaomi smartphone owners with two SIM-The cards often have confusion when choosing a card to send. In the message settings, you can set the default card for SMS and for calls separately.
Check that the SMS card is selected by LUGAKOM in the "Send SMS" field, if it is used for this, and if you have the "Always Ask" option, the phone will request confirmation every time, which can be inconvenient.
Also worth mentioning is Mi Message, which is the equivalent of iMessage, which works over the Internet. If it's activated, the phone can try to send messages over Wi-Fi using Internet traffic. To work properly with regular SMS, it's better to turn off this feature in the message settings so that the phone uses a classic GSM channel.
⚠️ Note: Mi Message can consume traffic and battery.If you are not actively using the Xiaomi ecosystem, turn off chat functions in the Messages app settings.
Remember that when you're in active flight mode or when your signal is weak, your messages can be saved to your outbounds. Check the Send folder to make sure the message isn't stuck there. If it happens, turn on and off flight mode to re-register.