No signal on Xiaomi phone – what to do if mobile Internet and calls are missing

You've picked up your Xiaomi Redmi Note 12 or POCO X5 Pro, and you've got a void on the screen instead of your usual sticks on the network. No calls, no SMS, no mobile Internet. This is familiar to many Xiaomi smartphone owners, and it can be caused by software failures and hardware failures. In this article, we'll look at all the possible scenarios why the phone stopped catching the network, and give you step-by-step instructions for restoring communications, from basic actions to advanced methods.

It's important to understand that not having a signal doesn't always mean a breakdown. 70% In cases, the problem is solved independently without going to the service center. 2026 year, considering the features of the firmware MIUI 14/15 Qualcomm communication modules Snapdragon/Mediatek. If Xiaomi doesn’t see the network after an update, drop, or change SIM-Maps – here you will find the solution.

Basic checks: what to do first

Before you dig deeper, rule out the obvious reasons. Start with these steps -- they take less than a minute, but often solve a problem.

• 📶 Check coverage: move to another location (like a window) or ask other subscribers of your operator if they have a network catching.
• 🔄 Reboot your phone: press the power button and select "Reboot." This will reset the temporary errors of the communication module.
• 📱 Activate flight mode for 30 seconds: turn it on in the notification curtain, wait half a minute and turn it off.
• 🔧 Check it out. SIM-card: remove the tray, clean the card contacts with a dry napkin and paste back.Make sure the card is inserted on the correct side (chip down).

If you don't get a signal after this manipulation, move on to the next section. SIM-In 2023-2026, cases when new nano-SIMs from operators had defective contacts increased, which is why Xiaomi simply did not see them».

2. Network settings: what could have gone wrong in the phone

Failures in software settings are the second most common cause of signal failure, and there are several pitfalls in MIUI that users often don’t know about.

The first thing to check is network mode. By default, Xiaomi can limit communication to 2G to save battery life.

1. Open the Settings. → SIM-maps and mobile networks.
2. Choose yours. SIM-card (if there are several).
3. Tap the network type and install 4G (recommended) or 3G/4G/5G (auto).
4. Activate the option to Enable VoLTE (if available) – this will improve the quality of calls.

If the menu does not include Network Type, your Xiaomi model will block manual configuration, in which case resetting the network settings (more on this below) will help.

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On some MIUI firmware, the network type option is hidden. To unlock it, type ##4636### in the Phone app, select Phone Information, and manually install your preferred network type.

3. Network reset: when and how to do

If a Xiaomi phone doesn’t catch the network after a firmware update or carrier change, resetting network settings often solves the problem, which removes all stored Wi-Fi networks, passwords and mobile Internet settings, but does not affect personal data.

Instructions:

1. Go to Settings → Memory and Reset → Resetting.
2. Select Network Reset (not to be confused with a full reset!).
3. Confirm the action and wait for the reboot.

Once reset, the phone will automatically connect to the available networks, but you'll have to re-enter the Wi-Fi passwords. If the signal never shows up, check if the antivirus or VPN is blocking network connections. For example, applications like Avast or Kaspersky sometimes interfere with the radio module.

Make sure you know the Wi-Fi passwords

Disable VPN (if used)

Close background annexes

Check the balance SIM-map-->

4.Problems with SIM-Card: from format to lock

Modern Xiaomi supports only nano-SIM, and even the slightest mismatch in size can lead to a lack of signal.

• 🔍 Incompatible format: if you cut the micro-SIM to nano, the contacts could be damaged.
• 🚫 Blocking by the operator: check the balance and status of the card through USSD-request (e.g. *100# for MTS) may be blocked for non-payment.
• 🔄 Old one. SIM: Cards older than 5 years may not support modern communication standards (e.g. VoLTE.
• 📱 Double. SIM: If you have a two-sim Xiaomi (for example, Redmi Note 11 Pro)+), Try to move the card to another slot.

Also check if the phone is activated “only” mode. 2G» (Sometimes it's turned on to save battery. Open Settings. → SIM-map → [yours SIM] → Network type and select 4G/3G/2G (motor-car).

5. Software glitches: from updates to viruses

If Xiaomi's phone stopped catching the network after the MIUI update, the firmware bug is most likely to blame. In 2026, such problems were recorded in the POCO F5 and Redmi 12 models after upgrading to MIUI 15.

• 🔄 Reverse to the previous version: If the update is installed recently, try resetting your phone to factory settings (first make a backup!).
• 📥 Install a patch: check on forums (for example, 4PDA Xiaomi Community – may have already been patched.
• 🛡️ Check for viruses: some malware blocks network modules. scan your phone via Google Play Protect or Malwarebytes.
• 🔧 Reset the settings. APN: Go to Settings. → SIM-map → [yours SIM] → Access points (APN) and click "Reset to factory».

If the failure occurred after manual intervention (for example, obtaining root rights or installing custom firmware), the modemst1 or modemst2 file is likely corrupted, in which case only flashing through Fastboot will help.

6. Hardware malfunctions: when without service can not do

If all the software methods have been tried and the signal is still missing, the problem may be in the hardware.

• 📡 The antenna module is damaged, often after falls or moisture, and the phone only catches the network in a certain position.
• 🔌 Out of contact. SIM-If the slot is damaged, the card is not fixed correctly.
• 🔋 Motherboard malfunction: if the phone does not see any SIM-The card may have burned the radio module (for example, the Qualcomm chip). QFE1100).
• 💧 Corrosion after water hits: Even if the phone is turned on after “bathing”, the contact oxidation may occur later.

Self-diagnose hardware breakdown is difficult, but there is a simple test: insert a working SIM-If it works, it's your Xiaomi problem. If it doesn't, it's the card or the operator's fault.

⚠️ Warning: Don't try to disassemble your phone yourself if you don't have experience. In Xiaomi models, antenna cables are attached with fragile latches that are easy to break, which will make repairs more expensive.

7. Features for specific Xiaomi models

Some Xiaomi smartphones have unique sores associated with lack of signal, and here are the most problematic models and their treatment:

Models with Mediatek Helio (e.g. Redmi 10A) have problems with VoLTE. If calls don't pass but the internet is working, check your settings:

1. Open the Settings. → SIM-map → [yours SIM] → Enable VoLTE.
2. If there is no option, update the firmware or contact the operator to activate the service.

8.When to contact the service center

If you have tried all the methods in this article, and the signal is still not, it is time to contact the specialists.

• 🔧 The phone doesn't see any of them. SIM-Card (including knowingly working).
• 📉 The signal disappears at the slightest movement (for example, if you tilt the phone).
• 🔥 A message appears on the screen. SIM-card damaged or insert SIM-map, though it's in place.
• 💦 The phone fell into the water or was subjected to severe mechanical stress.

In the service center Xiaomi diagnostics takes 1-2 days, the average cost of repair antenna module — from 1,500 to 4000 rubles (depending on the model), if the phone warranty, repair will be free, but only if the breakdown is not caused by mechanical damage.

⚠️ Warning: Before visiting the service, back up the data. When diagnosing, the wizard can reset the phone to factory settings.

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If the phone stopped catching the network after a fall or moisture, do not delay the repair. Contact corrosion can lead to a complete failure of the motherboard, and then the recovery will cost many times more.

FAQ: Frequent questions about the lack of signal on Xiaomi