AT+EGMR=1,29,"350123456789012"
AT+EGMR=2,7
The IMEI identifies the device to the network. It is used for: quectel ec25 change imei
This command is used to write the IMEI to certain chips, but on most Quectel EC25 firmware versions, it is either: quectel ec25 change imei
If you receive an ERROR , the command may be locked. Some firmware versions require a security password (usually provided to OEMs by Quectel) via AT+QPRTPW . quectel ec25 change imei
Some older Quectel firmwares require a checksum digit calculation (Luhn algorithm), but the module usually auto-generates the checksum if the first 14 digits are valid. However, it is best practice to generate a valid IMEI with the Luhn checksum included.