How to change the IMEI on Xiaomi phone: methods and consequences

Changing a mobile device’s unique identifier is a complex technical procedure that requires a deep understanding of the architecture of the Android operating system. IMEI (International Mobile Equipment Identity) is a 15-digit code assigned to each cell device in the factory and serves as its digital passport in communication networks. Owners of Xiaomi, Redmi and Poco smartphones are often interested in the possibility of modifying this parameter for various reasons, ranging from recovery from software failures to the desire to bypass the carrier lock.

However, the process of changing the identifier is not a regular function and carries serious risks: errors in interfering with system partitions of memory can lead to complete inoperability of the device, turning it into a “brick”. In addition, it is necessary to take into account the legal aspect: in many countries, including the Russian Federation, changing the factory number of the device without the permission of the manufacturer or authorized bodies can be considered as a violation of communication laws.

This guide is purely informative and describes the technical aspects of working with the engineering menu and debugging interfaces. We will look at the software methods available for devices based on MediaTek and Qualcomm processors, and analyze the potential consequences of such actions for the guarantee and stability of the gadget. IMEI may result in the device being blocked by the operator if cloning is detected.

Legal aspects and technical risks of changing the identifier

Before any manipulation of system parameters, it is necessary to clearly understand the responsibility. In the Russian Federation and several other countries, reflashing or changing the IMEI serial number is equivalent to making a device with changed identification features, this is regulated by articles of the criminal code concerning illegal trafficking of special equipment or fraud in the field of communication, if the purpose is to bypass locks of stolen phones.

Technically, Xiaomi's smartphone has several layers of security: ID data is stored in a secure NVRAM (Non-Volatile Random Access Memory) partition that has a special signature. When you try to change this data with standard methods, the system can detect a checksum mismatch, which often leads to the communication module not functioning correctly, the network, Wi-Fi or Bluetooth disappears.

⚠️ Attention: Change IMEI On a phone that is under warranty, automatically cancels the manufacturer's warranty obligations. Xiaomi service centers easily detect the fact of interference with the program code during diagnosis.

Also worth mentioning is the problem of cloning. If you set a number on your phone that already belongs to another active subscriber, both devices can be blocked by the carrier. 4G and 5G networks have sophisticated mechanisms for tracking such anomalies in real time, so the use of random or other numbers is strongly discouraged.

Preparation of the device and necessary tools

The first step is to get the advanced access rights to Root. Without superuser rights, no program can write new data to system files. For Xiaomi devices, the standard method is to unlock the bootloader through the official Mi Unlock site and then install a customized backup, such as TWRP.

The second important condition is that you have ADB (Android Debug Bridge) and Fastboot drivers on your computer, which allow you to send commands directly to the operating system or phone bootloader, and you will also need to install the drivers of a specific chipset (MediaTek Preloader or Qualcomm USB Driver) so that the computer correctly identifies the smartphone in debugging mode.

Make sure to back up your data. The process of modifying system partitions carries a high risk of losing personal information. Use Mi Cloud services or local copying on your PC. Make sure that the battery is at least 70%, as a sudden power outage during recording in NVRAM is fatal for the modem.

Method of Change through Engineering Menu (MediaTek)

Xiaomi smartphones, built on MediaTek processors (Helio, Dimensity), often have an affordable engineering menu called through special code. This is the easiest software method that does not require a connection to a PC, but it does not work on all versions of the firmware. In newer MIUI and HyperOS updates, access to this menu is often closed software.

To enter the engineer's menu, dial the code ##3646633##. If the menu is opened, go to the Connectivity tab, then select the CDS You can then select Radio Information, which is the input field that appears (usually called Radio Information). AT+) You need to enter a command to change the number. SIM-The team looks like a map AT+EGMR=1.7," YOUR NEW_IMEI".

It is important to follow the syntax: the number should be enclosed in quotation marks, and between the parameters, commas are put without spaces. AT. The phone can restart or simply confirm execution by the team. OK. For the second SIM card, a team is used AT+EGMR=1,10,"Your new_IMEI_2".

⚠️ Warning: This method doesn't work on Qualcomm-powered devices. Attempting to type commands can lead to unpredictable modem behavior.

If the code doesn’t work or the menu doesn’t open, it means the manufacturer has blocked access at the firmware level, which requires the use of specialized software on a PC, such as Maui Meta or SN Writer, which work in boot mode (BROM mode), but these tools require a precise version matching for a specific model of the chip.

Use of apps and Root rights on Android

For devices with Root rights, there are specialized applications that automate the replacement process. One popular solution is Xiaomi IMEI Changer or universal utilities like Device ID Changer. These programs work by directly writing to system files where the modem settings are stored, usually files in the /data/misc/radio/ directory or similar.

The process is as follows: once launched, the application requests the superuser's rights. Then the user enters the desired 15-digit number. The application generates a checksum (Luhn algorithm) to check the correct input. After confirmation, the program overwrites the original data and requires the device to restart.

The disadvantage of this method is its instability: security updates Google Play Protect can mark such applications as malicious and remove them.In addition, on new versions of Android, the partition that stores IMEI is often read-only, even for the root user, which requires additional manipulation with the file system mounting.

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Before using any IMEI change app, take a screenshot or write down the original number, which is listed on the phone box and on the sticker under the battery (if it's removable), which will help you get everything back to normal if necessary.

Shift. IMEI via computer and ADB-team

The most reliable but challenging method is to use the command line on a PC, which requires a USB cable and an installed SDK Platform Tools package. First, you need to enable USB debugging in the Developer menu on your phone. Connect the device to your computer and open the terminal (CMD or PowerShell).

Enter adb devices to check the connection. If the device is displayed, you can go to shell commands. However, direct writing through ADB is often blocked. A deeper method involves using the QPST utility (for Qualcomm) or SP Flash Tool (for MediaTek). In the case of QPST, after connecting the phone in QDLoader 9008 mode, you can edit the modem configuration file through the QCN Writer program.

Algorithm for advanced users:

• 📱 Back up the section. EFS/NVRAM through TWRP.
• 💻 Open the backup file in HEX-PC editor.
• 🔢 Find a line with the current one IMEI Replace it with a new one, keeping the byte structure.
• 💾 Write the changed file back to your phone.

This method requires precision. A single byte error can permanently disrupt the radio module, and there is a risk of a RPMB (Replay Protected Memory Block) trigger that prevents the rollback or change of critical security data.

Possible problems and ways to solve them

After the procedure, users often face a problem of “No network” or constant search for a signal, which indicates that the new IMEI was not validated in the hardware base or was entered with an error in the checksum.

Another common problem is disappearance. IMEI After you reset your settings or update your firmware, it's because the standard ones are OTA-Updates often restore original factory data from hidden partitions by overwriting user changes. To avoid this, you need to modify the update scripts, which further complicates the operation of the device.

⚠️ Attention: If after the shift IMEI phone stopped seeing SIM-map, try resetting the network settings (Settings) → Connection and sharing → Reset Wi-Fi, mobile networks and Bluetooth.If it didn't help, probably damaged partition NVRAM, and will require restoration from backup.

There may also be an increased battery drain, and if a modem tries to log in with a left-handed ID, it causes constant search for the base station and power surges, and the only way out is to return to factory settings.

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The safest way to restore the network after a failed IMEI change is to restore the full backup of the NVRAM/EFS partition made before the manipulation.

Frequently Asked Questions (FAQ)