“Mobile Network Not Available” on Xiaomi: A Complete Troubleshooting Guide

You saw the words "Mobile network unavailable" on your Xiaomi screen -- and now the phone can't catch any calls or mobile Internet? This bug can appear on any model from the budget Redmi Note 12 to the flagship Xiaomi 14 Ultra. The reasons range from a banal software failure to hardware problems with the communication module. 80% of the time the malfunction is fixed on its own - without going to the service center.

In this article, we will analyze all possible reasons for the lack of a mobile network on Xiaomi, starting with the simplest (reboot, check). SIM-maps) and ending with complex (manual editing) APN, We'll focus on specific bugs. MIUI 14 that don't appear on other firmware. If you still have questions after reading, use interactive. FAQ end-of-article.

Basic checks: SIM-map, flight mode and reset

Before you dig deep into the settings, make sure the problem isn't on the surface. Start with these three steps:

• 🔄 Reboot your phone. Hold the power button for 10 seconds before the menu appears, then select "Reboot." This will reset the temporary errors of the communication module.
• 📶 Check flight mode. Swipe down from the top of the screen and make sure the airplane icon is not active. Sometimes it turns on accidentally.
• 📱 Remove and insert. SIM-Use a paper clip to remove the tray, then gently wipe the contacts of the card with a dry napkin (without alcohol!).

If the network does not appear after the reboot, check if the phone recognizes SIM-Go to the settings. → The phone. → Status SIM-If it's empty or it says, "No." SIM» — the problem is either in the card (damaged, inactivated) or in the phone slot. Try inserting the card into another smartphone to rule out malfunctioning.

⚠️ Note: Xiaomi with hybrid slots (e.g. Redmi Note 11 Pro)+) SIM-The card may not be detected if the second slot is occupied by a microSD.

2. Mobile network settings: APN, mode and operator

Incorrect APN settings or randomly altered network mode are common reasons for the lack of communication, and even if you didn't change anything, the settings could reset after the MIUI update.

First, check the network mode:

1. Open the Settings. → SIM-maps and mobile networks.
2. Choose yours. SIM-card (if there are several).
3. Click Network Type and install 4G (preferably) or Auto.

If that doesn’t work, reset your APN settings:

1. In the same menu, select Access Point Names (APNs).
2. Click on the three dots in the top right corner and select Reset to default values.
3. If the APN list is empty, add a new one manually (request the options from the operator or find it on its website).

⚠️ Attention: MIUI 14 there is a bug that causes the settings APN They're resetting after they're restarted. If that's your case, upgrade your firmware or roll back. MIUI 13.

The correct mode (4G/Auto) is selected |

APN reset to factory |

SIM-map is determined in status|

I tried to put the card in another phone.|-->

3. Software failures: cache, updates and network reset

If the basic settings didn't work, the problem could be in the system cache or outdated software. Start by cleaning the cache of the communication module:

1. Open Settings → Applications → Application Management.
2. Click on the three dots at the top and select Show System.
3. Find Phone Services (or Com.android.phone), open and click Clear Cache.
4. Repeat for Settings (Com.android.settings).

If the network does not appear after cleaning the cache, check for MIUI updates:

• 📱 Go to Settings. → The phone. → Updating the system.
• 🔄 Click on “Check Updates” and install the available packages.
• 🔧 If the upgrade weighs more than 1GB, connect to Wi-Fi to avoid download errors.

If that doesn’t work, reset your network settings (this will delete stored Wi-Fi and Bluetooth devices, but will not affect personal data):

Settings → SIM- Maps and Mobile Networks → Network Resetting → Reset settings

💡

Before resetting the network, save the Wi-Fi passwords in your notebook - after the procedure, you will have to enter them again.

Hardware problems: antenna, module and physical damage

If the software methods didn't work, the problem could be hardware, and here are the signs that it's hardware:

• 📵 The phone does not catch a network with any SIM-map (checked for 2-3 maps of different operators).
• 📶 The signal level is constantly flashing or showing 0 divisions.
• 🔌 The problem appeared after a fall, moisture or self-disassembly of the phone.

The most vulnerable components:

1. An antenna plume is a thin cable that connects the motherboard to antennas, often leaving after falls.
2. The communication module is the chip on the board that controls the mobile network, and it fails when it overheats or shorts.
3. SIM-tray – contacts may oxidize or bend.

For diagnosis:

1. Try inserting. SIM-card in another slot (if the phone supports 2) SIM).
2. Check if the phone is catching the network in a deserted place (such as in nature) – if so, the problem may be tower congestion.
3. Use the engineering menu to check the signal (see the next section).

⚠️ Warning: If the phone fell into the water, even after drying, corrosion could damage the antenna tracks, in which case only repairs to the service with a replacement plume or board will help.

5. Engineered menu and hidden settings Xiaomi

Hidden service menus allow you to check the status of the communication module, signal level and even force to switch networks.

If you enter the code ##4636### and see Unknown in the Network Type or Service Status section, this confirms a hardware malfunction of the communication module.

• 🔧 Try to check the phone (see section 6).
• 🛠️ Contact the service for payment diagnostics.

For forced network selection (if the phone is stuck on 2G):

1. Enter ##4636## and select Phone Information.
2. Scroll down to Set your preferred network type.
3. Select LTE only (4G only) or GSM/WCDMA/LTE auto (auto).

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If the engineering menu displays IMEI as 000000000000000000, this is a critical error that requires flashing or repairing the communication module.

6.Flashing and restoring IMEI

If all the previous methods didn't work, and you see zero IMEI or no network on the engineering menu, the problem could be the firmware.

• 🔄 Failed update MIUI.
• 📱 Custom firmware installations (for example, LineageOS).
• 🔧 Reset to factory settings without backup.

To restore the IMEI and the communication module:

1. Download the official firmware for your model from en.miui.com (select the Stable version, not the Developer version).
2. Install the Mi Flash Tool on your PC and connect your phone in Fastboot mode (clip Volume Down + Power when turned on).
3. Sweep through the phone with the Clean All option (this will delete all data!).

If the IMEI is reset (000000000000000000000), restore it using the engineering menu:

1. Enter ##36446337# (Engineer Mode).


2. Go to MTK Settings → Connectivity → CDS Information → Radio Information.




3 In the AT+ field, select the SIM- card (e.g., AT+EGMR=1,7,"IMEI_1").




4. Enter the command: AT+EGMR=1.7, "YOUR IMEI" (without quotes).




5. Press Send AT Command.




6. Reboot the phone.

⚠️ Attention: Recovery IMEI It is illegal to use the engineering menu in some countries. IMEI He did not take the place of another. IMEI!).

7.When to contact the service: signs of critical malfunctions

If you’ve tried all the methods in this article, but the mobile network is still unavailable, the problem is likely hardware.

• 🔌 The phone doesn't define any of them. SIM-card (even after checking on another device).
• 📵 On the engineering menu IMEI It is displayed as 000000000000000000000, and recovery does not help.
• 🔥 The phone overheats in the upper part (where the antenna is located).
• 💧 There were physical injuries: a fall, moisture, disassembly.
• 📡 Signal level in the engineering menu is always 0 or Unknown.

Cost of repair in the service:

Before the service visit:

• 🔍 Check if the service has original parts for your Xiaomi model.

FAQ: Frequent questions about the “Mobile network is not available” issue