The ability to modify an International Mobile Equipment Identity (IMEI) on Quectel modules like the EG25-G, EC25, or EP06 is a common point of discussion for developers and advanced users. While technically possible via specific AT commands, it is a sensitive procedure with significant legal and operational implications. Technical Implementation: The AT+EGMR Command

TAC (Type Allocation Code): 8 digits identifying the device model and manufacturer.
SNR (Serial Number): 6 digits unique to the device.
Check Digit (CD): 1 digit (Luhn algorithm).

Prerequisites:

Sign Agreement: After signing relevant agreement terms, Quectel provides official AT commands and tools for the modification. 2. Common AT Commands for Identification

2. Background on IMEI and Quectel Architecture

2.1 IMEI Structure

An IMEI consists of:

Quectel strictly advises against unauthorized IMEI modifications to prevent network compatibility issues. To change it officially: Contact Support: Send an email to support@quectel.com.

AT+CGSN
867994056789012

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