The IMEI serves as a device's "digital fingerprint" for cellular networks. Networks use it to validate legitimate devices, block stolen equipment, and enforce regulatory compliance. Quectel modules ship from the factory with a pre-programmed, unique IMEI burned into the device's non-volatile memory (EFS/EFS2 partition).
AT+EGMR=1,7,"NEW_IMEI" AT+NVM=2 AT+REBOOT
The most commonly cited command in technical forums for older or development-unlocked Quectel firmware is AT+EGMR . AT+EGMR=1,7," " Use code with caution. : Indicates a write command. 7 : Indicates the target is the IMEI storage slot. quectel change imei
: Some countries require specific IMEI prefixes for IoT devices rather than phone prefixes.
After reset, AT+CGSN will return the new IMEI. The IMEI serves as a device's "digital fingerprint"
Comprehensive Guide to Quectel IMEI Modification: Methods, Commands, and Legal Implications
The IMEI was written to temporary volatile cache rather than the permanent OTP (One-Time Programmable) memory or secure NVRAM block. 7 : Indicates the target is the IMEI storage slot
Insert SIM card and verify network registration with AT+CREG? and AT+CGREG? .
If you face connectivity issues or legitimate regulatory requirements, your best course of action is to pursue official support channels from Quectel or your device vendor. They can provide compliant solutions. For users considering a change, it's essential to thoroughly evaluate these risks against their specific use case, as outlined in this guide. For other technical questions or support with Quectel modules, the official manufacturer website and documentation remain the most reliable sources of information and guidance.
