No network signal on Xiaomi phone: what to do and how to return the connection

You've taken your Xiaomi, and instead of the usual sticks, the void or the words "Not on the grid"? The problem with the lack of mobile communication on smartphones of this brand is more common than you think. The reasons can be in both trivial settings and hardware malfunctions. In this article, we will analyze all possible scenarios, from the simplest to those that require the intervention of the service center.

It's important to understand that if the signal went missing suddenly, without any previous drops or hits on the phone, 80 percent of the time it's the software or the operator's settings that are to blame, but if the phone fell, got wet or disassembled, it's probably the hardware, and we can help diagnose the problem and tell you what to do in each case.

Don't rush to repair the machine: many malfunctions are solved in 5 minutes on their own, start with the most obvious reasons and gradually move on to more complex ones.

1. Checking the basic settings: SIM-map and flight mode

The first thing you need to do is make sure that the problem isn't the basics, and often users forget about the flight mode that's on or the flight mode that's not installed correctly. SIM-Let's go through the main points:

• 📶 Flight mode: Check the top notification curtain -- if the airplane icon is illuminated, tap it to turn it off. → SIM-maps and mobile networks → Flight mode.
• 📱 SIM-card: remove the tray and make sure the card is inserted correctly (chip down, beveled corner matches). On some Xiaomi models (e.g. Redmi Note 10 Pro), the second slot is hybrid - check if the memory card locks the memory card.
• 🔄 Reboot: sometimes it helps to switch off and turn on the phone. Press the power button for 10 seconds, wait for vibrations and turn on the device again.

If the signal doesn't appear after this manipulation, we'll move on to the next step, and note that some MIUI firmware (especially custom ones) may be losing network priority.

Mobile network settings: operator choice and type of communication

Incorrect mobile network settings are the second most common cause of signal failure, especially for phones that have recently been updated, reset to factory settings, or used with a mobile phone. SIM-maps of different operators.

Open the Settings. → SIM-Maps and mobile networks and check:

• 📡 Network selection: tap your operator's name (e.g., "MTS" or "Beeline"). If it says "Manually selected", try installing Automatically. If the network does not find the operator in automatic mode, manually select it from the list.
• 🌐 Network type: In the "Preferred Network Type" section, set 4G/3G/2G (In some models, in some models (POCO X3 Pro, Mi 11) There may be a separate switch for VoLTE – turn it on if the operator supports the technology.
• 🔄 APN: point (APN) Sometimes they get lost after updates. Click "Access points (APN)» → «Reset to default values. If this does not help, enter the settings manually (you can find them on your operator's website).

A critical mistake many users make: when you manually select the network, the phone can stick to the base station with a bad signal. If after manual selection, the network disappears, return the settings to automatic mode and restart the device.

3. Software glitches: reboot, reset and updates

If the basic settings are fine but the network is still missing, the problem may be in the software. MIUI is known for its "glitches", especially after updates or custom firmware installation.

• 🔄 Soft reset: Press the power button and turn up the volume for 10-15 seconds until the phone restarts.This clears the system cache without losing data.
• 📱 Reset Network Settings: Go to Settings → System and device → Resetting settings → Resetting Wi-Fi, mobile network and Bluetooth settings, which will delete all stored networks and passwords, but can return the signal.
• 🔧 Firmware Update: Check for Updates in Settings → The phone. → System updates. Sometimes network bugs get fixed in new versions. MIUI.
• 🚨 Hard reset: If nothing helps, make a full reset to factory settings (Settings) → System and device → Resetting settings → Write down all the data. Attention: this will delete all files from your phone, so back up first.

After a hard reset, the phone will turn on as new. Remember to re-enter the APN settings and manually select the carrier if the automatic search fails.

⚠️ Note: if you have installed custom recavers (for example, TWRP) Or unofficial firmware, factory resets can cause a phone to "brick" (inoperability), which requires flashing through Fastboot.

Hardware problems: antenna, communication module and damage

If the software methods didn't work, the problem could be the hardware, and the most common ones are:

• 📡 Antenna module: responsible for receiving the signal. When falls or impacts, the antenna contacts can move away from the motherboard. On the surface, this manifests as a complete absence of the network or a "jumping" signal (i.e., no).
• 🔌 SIM-: on some models (Redmi) 9A, POCO M3) contacts tray oxidized or bent, because of which the phone does not recognize SIM-Try to clean the contacts with alcohol or bend them slightly.
• 🔋 Battery: A bloated battery can push the motherboard, disrupting the connection of the antenna module. If the phone is discharged faster or the body is "burning", this is an alarming sign.

Checking the hardware fault can be as follows:

1. Put it in. SIM-Card to another phone – if you have a network, the problem is your Xiaomi.
2. Try another one. SIM-If there's no signal on your phone, it's the machine.
3. Call the phone from another device if the call doesn't pass (even if it's not a phone call). SIM-map is recognized, there may be problems with the communication module.

⚠️ Note: if the phone falls into the water or has been subjected to severe vibrations (for example, in a car without a mount), there is a high probability of microcracks on the board.

5. Problems on the operator’s side: blocking, technical work

Sometimes it's not the phone that's the fault, it's the mobile operator.

• 🚫 Lockdown SIM-card: if you have not used the number or have not replenished the account, the operator could block the card.
• 🔧 Technical work: operators periodically update equipment, which can lead to temporary interruptions.
• 📵 Regional restrictions: if you are travelling, make sure roaming is enabled (Settings) → SIM-maps and mobile networks → Roaming is paid and requires connection at some rates.

To avoid operator problems:

1. Call the hotline (for example, for MTS - 0890, for Beeline - 0611).
2. Put it in. SIM-card to another phone and check if the network is available.
3. Check with the operator whether towers are being repaired in your area.

If the operator confirms the problem on his side, we just have to wait, and usually the work lasts no more than a day.

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If you often lose your network in the same place (e.g. at home or at work), try using a repeater (repeater), which amplifies the mobile network signal in the room, starting at 3,000 rubles.

6.Firmware issues: custom ROMs and "curved" updates

Xiaomi users who install unofficial firmware (LineageOS, Pixel Experience) or update via TWRP often face a lack of network.

• 📲 Incompatible firmware: if you have stitched the phone with firmware from another model or region (for example, you have installed a new firmware). EU ROM On the Chinese version of the phone, the communication module may not work.
• 🔄 Incomplete update: if during the update TWRP There was a failure, could be damaged system files responsible for the network.
• 🚫 Absence IMEI: After an incorrect firmware can fly IMEI (A unique phone ID, without which the network will not work.

How to check and correct:

1. Make sure the IMEI is in place: type in the phone app *#06#. If the number is empty or "null", you need to restore.
2. If you don’t have an IMEI, use tools like Maui META or SN Write Tool (requires skills and an IMEI backup).
3. Flash your phone with the official firmware via the Mi Flash Tool (instructions in the spoiler above).

⚠️ Attention: recovery IMEI On some models (Redmi Note 8 Pro, Mi) 9T) It can shut down the network forever if you don't do it right.

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If you lose a signal after you've run the firmware, never try to fix it with patches or mods, and the only reliable way is to return the official firmware with the correct communication module drivers.

7. Diagnostics and repairs in the service center

If you've tried all the ways, but the network never came along, it's time to go to the service.

• 🔍 Diagnostics of the board: checking the power chains of the antenna module, searching for microcracks or detached contacts.
• 📡 Replacement of the antenna module: if the antenna is damaged, it is changed to a new one. The cost is from 1,500 to 4000 rubles depending on the model.
• 🔧 Interconnection module: if the problem is in the chip itself (e.g. Qualcomm Snapdragon) X50 on Mi Mix 3 5G), needing to be soldered or replaced.
• 📱 Firmware through test points: in difficult cases (for example, after unsuccessful unlocking of the bootloader), the firmware is poured directly through the contacts on the board.

Average cost of repair:

Before you bring your phone to the service, make sure you have:

• All important data is stored (after repair, a reset may be required).
• There is a check or a warranty card (if the phone is on the warranty).
• Mi Account lock is disabled (if firmware is required).

FAQ: Frequent questions about missing signal on Xiaomi