Xiaomi phone doesn't see SIM-MTS map: causes and solutions

You put it in. SIM-MTS card in the slot of the Xiaomi smartphone, but the phone stubbornly does not see it - instead of the usual strips of the network, the inscription "Without a network" or «SIM-Card not found? the problem is familiar to many Redmi owners, POCO And Mi, especially after a firmware update or mechanical impact on the device, and 80 percent of the time, the malfunction is solved by software, but sometimes it's the hardware failure or the SIM card itself.

In this article, we will discuss all possible reasons why Xiaomi does not catch the MTS network, from banal contamination of contacts to errors in the settings of the communication module. MIUI 12/13/14 And HyperOS, the SIM card compatibility table, and the answers to the frequent questions, and if you read the problem, there's a checklist at the end of the article to diagnose a malfunction at the service center.

1. SIM card and slot check: mechanical causes

Before digging into your phone’s settings, make sure the problem isn’t the one in itself. SIM-In 30 percent of cases, the problem is due to physical factors, such as contamination of contacts, improper insertion or chip damage.

Here's what we need to do:

• 🔄 Reboot the phone. Sometimes the system MIUI «It's buggy and it doesn't recognize the SIM card after it's turned on. A simple reboot helps in 15 percent of cases.
• 📱 Remove and re-insert. SIM-Make sure it's set with gold pins down and before the click. On hybrid slot models (like the Redmi Note 11), check if the microSD interferes with the device.
• 🧹 Clear the contacts. Take an eraser or a napkin dipped in alcohol, and clean the contacts gently on the SIM card and in the phone slot. Don't use metal objects - this will damage the coating!
• 🔍 Check the SIM card on another phone, if it doesn't work there, there's a problem in the card (possibly operator lock or physical damage).

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If you have a Xiaomi with two SIM cards, try inserting the MTS into another slot, and sometimes one of the modules fails and the other one works fine.

If the SIM card is good but the phone can't see it, move to the next section. If the card doesn't work on other devices, contact the MTS salon for a replacement.

• 💳 Expired expiration date (on nano)-SIM It's on the plastic holder).
• 🔒 Suspicious activity (such as mass mailings) SMS).
• 📡 Technical work on the operator side (check the network status on the official website).

2. Network settings: why MTS does not catch the network on Xiaomi

Even if the SIM card is good, the phone may not see it because of the wrong network settings, most often after an update. MIUI Or reset to factory settings. Let's look at the key parameters that you need to check.

Open the Settings. → SIM-Maps and mobile networks and follow the following steps:

Make sure the switch is near the SIM-MTS card is active (blue color)|Select the network mode: for 4G — «LTE/3G/2G (car), for 5G — «5G/LTE/3G/2G»|Check that roaming is enabled (even if you are in your home region)|Turn off and turn on the "Data Transfer" mode again»

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If the network does not appear after these manipulations, try to manually select the operator:

1. Go to Settings. → SIM-maps and mobile networks → Choice of network.
2. Turn off the “Automatic” option and wait for the available networks to be found.
3. Find it in the list. MTS or MTS (sometimes displayed as MTS RUS) and choose her.

If the phone says “Unable to connect” or “Network unavailable”, the problem may be in the APN-Delete all current profiles APN And create a new one:

1. Open the Settings. → SIM-maps and mobile networks → Access points (APN).
2. Press on «+» or add APN».
3. Fill in the fields according to the table below (leave the rest by default).

3. Software failures: resetting settings and firmware update

If mechanical checks and network settings fail, the problem may lie in the software, and failures in the communication module often occur after:

• 📱 Updates MIUI or hyperos.
• 🔄 Installation of custom firmware (for example, LineageOS).
• 🛠️ Incorrect recovery from the backup.

Start with the safest method – reset network settings:

1. Open Settings → System and device → Resetting settings.
2. Select “Reset Network Settings” (not to be confused with a full reset!).
3. Confirm the action and restart the phone.

If that doesn’t help, try updating the firmware:

• 📲 Go to Settings. → The phone. → Updating the system.
• If a new version is available, install it. After upgrading to HyperOS on some models (Redmi Note 12, POCO X5) You may need to re-configure APN.

In extreme cases, perform a full reset to factory settings, but note:

⚠️ Attention! This will delete all data from your phone, including photos, contacts and apps. → Google → Backup or Mi Cloud backup.

Firmware updates|Installation of the annex|Falls/blows|On his own.|The other.-->

4. Hardware malfunctions: when you need help from the service

If none of the previous methods worked, the problem is likely hardware.

• 📶 Communication module (can burn out when overheated or short circuited).
• 🔌 Slot SIM-cards (contacts are drained or oxidized).
• 📡 Antenna block (damaged by falls).

Here’s how to diagnose a hardware malfunction:

1. Check the network indicator. If the phone doesn't see any SIM cards (including the second one), the problem is in the communication module.
2. Look at the slot. Light it up with a flashlight, and if the contacts are bent or covered with green coating (oxidation), the slot needs to be repaired.
3. Call the antenna. The service center does this with a tester, but you may notice that the phone stopped catching the network after the fall.

Typical “symptoms” of hardware problems:

⚠️ Attention! If you don't have experience in electronics repair, don't try to solder your contacts or disassemble your phone. IP-certification (for example, Xiaomi 13 Pro) disassembly without special tools will lead to loss of tightness.

The cost of repairs in official service centers Xiaomi:

• 🔧 Slot replacement SIM-maps: 800-1500 ₽.
• 📡 Replacement of communication module: 1500–3000 ₽ (model-wise).
• 🔌 Repair of contacts on the board: from 2000 ₽.

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If the phone is warranty, do not open it yourself! Contact the authorized service center Xiaomi - repair warranty will cost free.

5. Problems on the side of the MTS operator

Sometimes it's not the phone that's the fault, it's the operator. SIM-limit or limit access to the network for the following reasons:

• 📵 Technical work on the station base (check the status on the MTS website).
• 💰 Negative balance (even if you have unlimited, some services may be blocked).
• 🔒 Blocking at the request of law enforcement agencies (less often, but sometimes).
• 🆔 Data inconsistency (for example, if you changed your passport but did not update the data in the cabin).

To check the status of your SIM-map:

1. Call the short number *111# and select Balance Check.
2. If the balance is in the negative, replenish the account (even by 10). ₽) and reboot the phone.
3. If services are blocked, contact the MTS salon with a passport.

Also check if you have activated a service called MTS Control (parental control), which may restrict access to the network.

• Through the personal account on the MTS website.
• Call the 0890 hotline (free call).

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If you recently changed the rate, wait 24 hours - sometimes the changes do not apply immediately.

6. Features for specific Xiaomi models

Some Xiaomi models have unique bugs that don’t make them visible. SIM-MTS cards. Let's look at the most common cases:

Redmi Note 10/11/12 Pro and POCO X3/X4

These phones often get VoLTE settings (voice communication via a phone) down. 4G), What's causing the network to go down:

1. Go to Settings. → SIM-maps and mobile networks → Challenge 4G (VoLTE).
2. Turn off the option, restart the phone and turn it on again.

Xiaomi 12/13/14 HyperOS

There's a bug in the new HyperOS firmware that identifies the operator «SIM-Unidentified map, try it out:

1. Install regional firmware (for example, Russia instead of Global).
2. roll back MIUI 14 via Fastboot (instructions on the official website).

Redmi 9A/9C and budget models

Cheap smartphones often have antenna plumes.

• The network only appears if you hold your phone at a certain angle.
• The sound in the speaker begins to wheez when calling.

The solution is only to replace the plume in the service (cost) ~1000 ₽).

7. Alternative solutions: if nothing has worked

If you’ve tried all the methods, but Xiaomi still doesn’t see MTS, here are a few more non-obvious ways:

• 🔄 Activate flight mode for 30 seconds, then turn it off. This resets the network connection.
• 📶 Manually register online via the engineering menu: ##4636## → Phone information → Select a network: «LTE only»
• 🛠️ Reverse to the old firmware if the problem has occurred after the update. Use the Mi Flash Tool (instructions on the official website).
• 📱 Try another one. SIM-If it works, the problem is blocking the MTS.

If that doesn't work, there are two options:

1. Contact the service center (the address is on the Xiaomi website).
2. Replace the phone under warranty if the hardware and phone malfunction on warranties.

⚠️ Before visiting the service, back up your data via Mi Cloud or Google Account. wizards can reset your phone to factory settings for diagnostics.

FAQ: Answers to Frequent Questions