The International Mobile Equipment Identity (IMEI) is a unique identifier assigned to a mobile device, including cellular modules like Quectel. It's used to identify a device on a cellular network.

Changing an IMEI is a criminal offense in many countries, often treated as tampering with telecommunications equipment [2].

While technical inquiries exist regarding modifying the IMEI of Quectel modules, this action is restricted by the manufacturer and often legally sensitive. The best practice is to interact directly with for any legitimate IMEI management needs to avoid breaking device functionality or violating network regulations.

Type AT+CGSN to note the factory IMEI. Execute Write Command: Enter AT+EGMR=1,7,"860434041234567" . Receive Confirmation: The module should return OK .

(including the US, UK, EU nations, China, and others) because IMEI numbers are unique identifiers used to track stolen devices, block blacklisted phones, and for lawful interception. Modifying an IMEI can be a criminal offense punishable by fines or imprisonment.

Use the command AT+GSN to check the current IMEI.

: In some regions, certain data plans are locked to specific device types (e.g., "tablet-only" plans). Users sometimes attempt to match the IMEI of a supported device to maintain connectivity. The "Catch": Security and Permanence Modern Quectel modules (like the ) have increasingly robust security. Security Commands

Incorrectly flashing or using the wrong AT command can lead to a permanently bricked modem.