Changing the IMEI (International Mobile Equipment Identity) on Quectel modules is often referred to as a "solid feature" because several of their modems, specifically those based on Qualcomm or Unisoc chipsets, support this through simple AT commands. While Quectel officially states they do not provide commands for IMEI modification and do not support it for customers, it is a widely documented procedure in developer communities for "repair" or device identification purposes. Common Modification Commands
The most frequently used command for modern Quectel modules (like the EG25-G, RM500U, or RM520N) is AT+EGMR: Query current IMEI: AT+EGMR=0,7 Write new IMEI: AT+EGMR=1,7,"[15-digit-IMEI]"
Reset to Factory IMEI: AT+QPRTPARA=3 (Note: This may erase all other configurations and should be used cautiously). Why This Feature is Used
IoT Card Compatibility: Some specialized IoT SIM cards are locked to specific device IMEIs. Users "spoof" the IMEI on a Quectel-based router to match an authorized device.
Network Compliance: In some regions, certain modules default to "Phone" IMEIs that carriers may reject for data-only plans; users change them to "Modem" type IMEIs to ensure registration.
Avoiding Throttling: Users may change the IMEI to make a router appear as a standard mobile phone to avoid data caps or speed throttling on unlimited mobile plans. Implementation Requirements
Serial Port Access: You must connect to the module's AT Port using tools like PuTTY, MobaXterm, or dedicated Qualcomm serial tools.
Driver Installation: Proper Quectel USB drivers must be installed to expose the COM ports in your device manager. quectel change imei
Interface State: Some users report that commands only succeed when the modem interface is not fully "up" or when certain WAN connections are disconnected. Legal and Safety Warnings Instructions to change the IMEI - PinePhone - PINE64 Forum
The International Mobile Equipment Identity (IMEI) is a unique 15-digit number used by cellular networks to identify and validate hardware devices
. While it is technically possible to modify the IMEI on many Quectel modules, it is important to understand the legal and technical implications before doing so. Legal and Ethical Considerations
: Changing an IMEI is illegal in many jurisdictions (e.g., the UK and parts of Europe) as it is often associated with bypassing network blacklists or using stolen hardware. Warranty and Support : Quectel officially states that customers are not allowed
to modify the IMEI and that doing so voids support guarantees. Network Integrity
: Using an "illegal" or unrecognized IMEI may prevent the module from registering with local carriers. Common Methods for IMEI Modification
If you have a legitimate reason—such as repairing a corrupted IMEI on a device you own—the following methods are frequently discussed in technical communities: Technical FAQs - Quectel Connect module in diagnostic mode (Diag port)
Changing or modifying the International Mobile Equipment Identity (IMEI) of a Quectel module is a sensitive topic that involves specific technical commands and significant legal considerations. While technically possible on certain models, it is generally not supported or recommended by the manufacturer. Technical Overview For many Quectel modules, such as the
, the IMEI is managed via AT commands through a serial port connection. Querying the IMEI : The command is standard for retrieving the current 15-digit identifier. Modification Command : Some users have successfully used the command AT+EGMR=1,7,"[NEW_IMEI]" to overwrite the identifier. Software Requirements
: The process typically requires connecting the module to a computer via USB and using a serial terminal like
set to the module's "AT Port" (often at a baud rate of 115200). Manufacturer Position Quectel officially states that customers are not allowed to modify the IMEI. Support Policy
: Quectel engineers generally do not provide commands for this purpose through public channels. Legitimate "Repair"
: For cases where an IMEI is corrupted or needs legitimate recovery (e.g., due to software damage), the manufacturer advises contacting Quectel Technical Support directly with your location and purpose for the change. Critical Risks and Legal Implications Instructions to change the IMEI - PinePhone - PINE64 Forum
Using Qualcomm tools:
00550 (IMEI) and 01942 (IMEI checksum).This method bypasses AT command restrictions but requires proprietary Qualcomm software.
While the technical capability to modify the IMEI on Quectel modules exists—facilitated by diagnostic interfaces, QMI protocols, and proprietary AT commands—it remains a highly restricted procedure. Legitimate applications are confined strictly to OEM manufacturing lines and authorized repair centers.
The unauthorized alteration of IMEI numbers undermines the integrity of mobile networks, facilitates the use of stolen hardware, and violates criminal statutes in most jurisdictions. Therefore, research into these mechanisms should be strictly limited to defensive security analysis and the development of anti-tampering technologies.
Disclaimer: This paper is for educational and informational purposes only. The author does not condone or encourage the illegal alteration of IMEI numbers. Tampering with device identifiers is a criminal offense in many jurisdictions.
Mobile networks maintain Equipment Identity Registers (EIR). If a Quectel module uses a cloned or invalid IMEI, it may be banned permanently (IMEI blacklist).
AT+EGMR=1,7,"YOUR_15_DIGIT_IMEI"