Why Xiaomi is losing its network: reasons and solutions

You have noticed that your Xiaomi, Redmi or POCO And the antenna symbol becomes a cross, and the Internet stops working, even though it's not working. SIM-The card is inserted and the balance is positive, a problem that is familiar to many owners of the brand’s devices, from the budget Redmi Note 12 to the flagship Xiaomi 14 Ultra. In most cases, it can be fixed independently without going to the service center.

In this article, we will look at all possible causes, from the banal (incorrect settings) to the technical (damage to the communication module), you will learn how to diagnose a problem by characteristic symptoms, which parameters to check first, and what to do if the network disappears after the MIUI update. We also collected current data on models of 2022-2026, where the problem occurs most often.

Importantly, if the network disappears only in certain places (such as the subway or in the country), the problem is most likely due to the coverage of the operator. But if the signal disappears everywhere — even where it used to work stably — read on.

1.Problems with SIM-map: from the banal to the critical

Start with the simplest – check. SIM-Even if it looks good, the contacts could oxidize and the map itself could fail:

• 🔄 Reboot your smartphone. Sometimes the network goes missing because of a temporary failure of the communication module. A simple reboot helps in 30% of cases.
• 📱 Remove and insert. SIM-Before doing this, gently wipe the contacts of the map and tray with a dry cloth (no alcohol!) on Xiaomi 13T Newer tray models can be tight – don’t put too much effort into it.
• 🆔 Check the card on another phone. If the network doesn't show up, the problem is SIM — Contact the operator for a replacement.
• 🔧 Activate the "Only" mode 4G» (If supported, go to Settings → SIM-maps and mobile networks → [Yours. SIM] → Network type and select 4G (on some firmware MIUI This item is hidden - use the search by settings.

⚠️ Note: If after removal SIM-The smartphone stopped seeing it at all (even after the reboot), possibly damaged SIM-A tray or a motherboard pin, and that's where the repairs will help.

2. Failures in the firmware MIUI: how to fix software

One of the most common explanations for why Xiaomi is missing is the MIUI firmware bugs, especially for devices that have recently received a major update (e.g., switching from MIUI 13 to MIUI 14).

• The network disappears after switching to aircraft mode and is not restored.
• The antenna symbol flashes or shows No network, although SIM-card.
• The problem appeared immediately after the update.

Decisions:

1. Reset your network settings. Go to Settings. → SIM-maps and mobile networks → Reset mobile network settings. This will delete the stored access points. APN And it'll bring the parameters back to the factory.
2. Update your firmware manually. Sometimes automatic updates are error-prone. Download the latest version of MIUI for your model from the official website and install it through Settings → About Phone → MIUI Update → Select a firmware file.
3. If the problem has occurred after the update, return to the old firmware via Fastboot (instruction below).

⚠️ Attention: On models POCO F5 Redmi Note 12 Pro+ post-rollback MIUI 13 may be missing support 5G. This is due to the hardware limitations of the new Snapdragon 7 chips.+ Gen 2.

3. Wrong APN settings: why is the internet and no calls (and vice versa)

If the smartphone catches the network, but can not make a call or connect to the Internet, the APN (Access Point Name) settings are to blame. They can get lost after an update, change of operator or reset.

• 📞 Calls pass, but mobile internet is not available (or vice versa).
• 🌐 Badge H+/4G/5G There are, but the pages are not loaded.
• 📧 They don't come. MMS-message.

How to set up your APN correctly:

1. Go to Settings. → SIM-maps and mobile networks → [Yours. SIM] → Access points (APN).
2. Click on the three dots in the top right corner and select Reset to default values.
3. If that doesn't work, add the access point manually.

After saving the new access point, restart the phone and check the network. If the APN is not saved or disappears after the reboot, this may indicate that the system files are damaged - you will need to flash it.

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Some MIUI firmware has hidden APN menu items, and to see them, search for "APN" in the settings.

4. Hardware malfunctions: when without repairs can not do

If the software methods didn’t work, the problem could be hardware, and here are the most common hardware reasons for Xiaomi’s network failure:

• 📡 The antenna module is damaged, often after falls or moisture is injected, and the network disappears when the phone is tilted or in certain positions.
• 🔌 Malfunction SIM-If the contacts are oxidized or bent, the phone will not be able to read the card stably.
• 🔋 Power problems in the communication module: Some models (e.g. Redmi Note 10 Pro) fail after prolonged use of the chip responsible for supplying voltage to the modem.
• 📱 The worst case scenario is that you need to have a complicated repair or replacement.

A critical sign of hardware failure: the network goes missing when the phone is heated (e.g., while charging or playing) and this indicates problems with soldering of the modem chip or capacitors, 90% of the time only soldering in the service center helps.

How to check the hardware on your own:

1. Call your phone from another device, if the call passes, but there is no network on the screen, the problem is in the display or firmware.
2. Try inserting. SIM-If the network appears, the first connector malfunctions.
3. Check your phone in Safe Mode (press the power button → Safe Mode). If the network is running, it's third-party software that's to blame.

Try another one. SIM-map

Check the operation in safe mode

Examine the tray for damage-->

5. Application conflicts: who is to blame and what to do

Sometimes the network on Xiaomi is lost due to third-party applications, especially those that work with mobile Internet or change system settings.

• 🔒 VPN-clients (e.g. NordVPN, ProtonVPN) can block the connection if the server is not available.
• 🛡️ Antiviruses and firewalls (Avast, Kaspersky, NetGuard) often block access to the network “for security».
• 📱 Internet Speed Master (Network Signal Booster) applications can disrupt modems.
• 🔄 Change programmes IMEI. Their use is not only dangerous, but often leads to a network lock.

How to find and resolve conflict:

1. Run your phone in safe mode (as described above) If the network is working, it's third-party software.
2. Remove suspicious apps starting with the latest ones installed.
3. Check application permissions in Settings → Apps → Permissions → Mobile data. Disable network access for unnecessary programs.

⚠️ Attention: On firmware MIUI Down below version 14, some applications (like DualSpace for app cloning) can block the network completely. MIUI or give them up.

6.Problems with the operator: blocking, restrictions, technical work

Sometimes the problem isn't with the phone, it's with the operator.

• 🚫 Lockdown SIM-cards for non-payment or on request (for example, if the card is issued for other people's data).
• 📵 Restriction of services (e.g., internet shutdown at zero balance).
• 🔧 Technical work at the operator's station (usually lasts no more than 2-3 hours).
• 🆕 Change in tariff, when options are not connected (for example, mobile Internet).

How to check:

1. Call the operator’s short number (e.g. *111# for MTS) and request the status of the services.
2. Try inserting. SIM-If the network doesn't show up, the operator has a problem.
3. Check the balance and active options through the personal account or mobile application of the operator.

💡 Tip: If you recently changed the tariff, wait 24 hours - sometimes the changes do not take effect immediately. SIM-Check if the settings for each card are mixed (for example, mobile Internet can only be activated for slot 1).

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If the network is lost on only one SIM-card (with two active cards), the problem is almost always related to the operator’s settings or the card itself.

7. Features of specific Xiaomi models

Some Xiaomi devices have unique network problems related to their hardware or firmware, and these are the most common cases:

For Xiaomi 13/14 series and Redmi Note 12 with Snapdragon 8 Gen 2/3 chips, the problem is when the network disappears when the power saving mode is activated.

1. Go to Settings → Battery and Performance → Energy Saving Mode.
2. Turn off the option or add the Phone app to exceptions.

FAQ: Frequent questions about the missing network on Xiaomi