Transceiver disabled on Xiaomi: 7 ways to turn on without a service center

Modern smartphones Xiaomi are complex devices, where the communication is responsible not only for the SIM-map, but also a whole complex of modules: Wi-Fi, Bluetooth, NFC, When a "Transceiver is off" notification appears on the screen or the network disappears, many users panic. In practice, 80 percent of the time, the problem can be solved by themselves without visiting the service center or even flashing the flash.

The reasons for disabling the module range from software failures to hardware malfunctions. For example, after an upgrade to the MIUI, the configuration of the radio module can fly off, and physical damage to the antenna (for example, after a fall) leads to complete loss of signal. It is important to understand that a disabled transceiver is not always a verdict. In this article, we will discuss all working methods for restoring communication, from basic (reboot) to advanced (ADB commands and engineering menu).

Why the transceiver is turned off: top-5 cause

Before you try to turn on the module, you need to understand what caused the failure.

• 📱 Software failure after an update. Often occurs when you upgrade to a new version MIUI (Especially on beta firmware. The communication module can hang in an uncertain state.
• 🔋 Battery savings: Aggressive optimization settings (such as in Ultra Battery Saver mode) sometimes turn off radio modules to extend autonomy.
• 🛠️ Wrong settings APN. If the parameters of the access point in the operator’s network are lost, the smartphone can “think” that the network is not available, and deactivate the transceiver.
• 🌡️ Overheating or hypothermia. At extreme temperatures (below) -10°C or higher +50°C) some Xiaomi models are forced to disable the communication module for protection.
• 🚨 Hardware malfunction, antenna damage, contact oxidation SIM-card or radio chip failure (for example, after falling or getting moisture).

Interesting fact: on devices with a Qualcomm Snapdragon chipset (for example, Xiaomi 12 Pro or POCO F4), the transceiver is more likely to suffer from software failures, whereas on MediaTek (for example, Redmi Note 11), problems are more often associated with unstable modem software.

⚠️ Warning: If your smartphone stops catching the network after a fall, water or mechanical impact, do not try to turn on the transceiver programmatically. This can aggravate the damage.

Method 1: Basic reset and verification SIM-map

Start with the simplest, physical reboot, which helps in 30 percent of cases where the transceiver has shut down because of a temporary MIUI failure.

1. Press the power button for 10-15 seconds until the shutdown menu appears.
2. Select “Reboot” (or “Restart” on global firmware).
3. After turning on, wait 1-2 minutes – the communication module needs time to initialize.

If the reboot didn't help, check it out. SIM-map:

• 📳 Remove the tray for SIM-cards (use a paper clip or special key).
• 🔍 Check the contacts for oxidation or contamination, and clean them with a lasticle if necessary.
• 🔄 Reinstall. SIM-card to another slot (if there are two of them) or try another card.

Check network visibility on another device (e.g., a second phone)

Make sure that SIM-The card is active (not blocked by the operator)

Try another one. SIM-map in the same smartphone

Restart your phone in safe mode-->

If the network does not appear after these manipulations, proceed to the next method.

Method 2: Enabling the transceiver through MIUI settings

Sometimes the communication module is disabled due to a failure in the MIUI settings.

1. Open "Settings» → «SIM-Maps and mobile networks (or mobile network»).
2. Choose yours. SIM-card (if there are several).
3. Make sure that the mobile data switch is active.
4. Check the "Preferred network type" setting. It is recommended to install 4G/3G/2G (auto).
5. If you have the option “Enable radio”, activate it.

On some firmware (e.g. MIUI 14 for the global version), the path may be different: Settings → Connection & Sharing → SIM cards → [select SIM] → Mobile data.

Method 3: Resetting network settings

If a transceiver is disabled after updating or reconfigurating, resetting the network settings can return it to working condition, which deletes all stored Wi-Fi, Bluetooth devices and mobile network settings, but does not affect personal data.

Instructions:

1. Go to Settings → About Phone → Settings → About Phone → Reset options.
2. Select "Reset Wi-Fi, Mobile & Bluetooth".
3. Confirm the action by entering PIN-code.
4. After the reboot, wait for the automatic activation of the mobile network (can take up to 5 minutes).

⚠️ Note: On some models (Xiaomi Mi) A3, POCO M2) Network reset may also reset settings APN. After the procedure, check that your operator's access point settings have loaded automatically. If not, add them manually (instructions are available on the operator's website).

💡

Before resetting your network, save your Wi-Fi passwords, which can be done by taking a picture of the network list in your settings or using applications like WiFi Password Viewer (root rights required).

Method 4: Engineering menu and service codes

For advanced users, it is possible to turn on the transceiver through an engineering menu or special ones. USSD-This method doesn't work on all models, but it can help if the standard settings don't work.

First, try the universal codes:

• 📞 ##4636## - opens the testing menu where you can check the status of the radio module.
• 📞 ##7594## - Forced reset of radio module (operated by MediaTek).
• 📞 ##225## - Check the signal level and status of the transceiver.

If the codes didn’t work, try the engineering menu (for Qualcomm):

1. Enter #36446337## (or #ENG## on some models).
2. Go to RF Band Selection or Network Select.
3. Choose Enable Radio or Turn On Modem.
4. Save the settings and restart the device.

💡

Service codes may vary depending on the region and version MIUI. If the code doesn’t work, don’t re-enter it – it can lead to blocking. SIM-map.

Method 5: ADB-command

If previous methods have failed, you can try activating the transceiver via the Android Debug Bridge (ADB), which requires a computer and minimal technical skills.

Step-by-step:

1. Put the debugging on. USB on a smartphone: Settings → The phone. → Version. MIUI (Press 7 times until the message “You became a developer” appears. → Additionally. → For developers → Debugging by USB.
2. Connect your smartphone to your PC and open Command Prompt (Windows) or Terminal (macOS/Linux).
3. Check the device connection: Adb devices should display your Xiaomi’s serial number.
4. Execute the command to turn on the radio module: adb shell am broadcast -a android.intent.action.ANY_DATA_STATE --es The "on" phone is an adb shell service call phone. 1 i32 1
5. Reset the device.

If the commands don’t work, try resetting the modem settings:

adb shell am broadcast -a android.intent.action.RADIO_OFF


adb shell am broadcast -a android.intent.action.RADIO_ON

⚠️ Attention: Misuse of the right ADB-If you don't know what commands you're going to use, you don't have to type in commands, and if you don't know what you're going to do, you don't have to reset the phone to the factory.

Method 6: Update or roll back firmware

If the transceiver is disabled after the MIUI update, the problem may be a firmware bug, in which case there are two options:

1. Update to the latest version (if a newer firmware is available where the bug has been fixed).
2. Reverse to the previous stable version (if the failure appeared after the last update).

How to update MIUI:

• 📲 Go to Settings. → The phone. → Updating the system.
• 🔍 Click on “Check Updates” and install the available version.
• 🔄 After the update, reset the network settings (see Method 3).

The firmware rollback will require:

1. Download the desired version of MIUI from the official Xiaomi website.
2. Go to Settings → The phone. → Updating the system → Threefold (⋮) → Select a Service Package.
3. Specify the path to the downloaded file and confirm the installation.

Method 7: Hardware diagnostics and service center

If none of the software methods worked, the problem is likely hardware, and here are the signs that a physical malfunction is occurring:

• 📵 Complete absence of network signal (even after flashing).
• 🔌 SIM-The card is not defined or defined as an "Unknown card".
• 🔥 The phone overheats in the antenna area (upper part of the body).
• 💧 A moisture notification appears on the screen (even if the phone hasn’t sunk).

In such cases, a professional diagnosis is required, and here's what the service center will check:

Before the service visit:

• 📋 Write it down. IMEI Your device (dial *#06#).
• 🔄 Backup your data (via Mi Cloud or computer).
• 🛡️ Check whether the warranty is maintained (on some models, self-opening the case cancels the warranty obligations).

FAQ: Frequent questions about Xiaomi transceiver