This covers Quectel cellular modules (e.g., EC25, EG25, EC21, BC95, etc.) used in embedded systems and USB modems. Exact commands and availability depend on module model, firmware version, and vendor lock.
AT+CGSN 867994056789012
Use a terminal emulator (like PuTTY, Tera Term, or QCOM) set to the correct COM port and baud rate (usually 115200). quectel change imei
→ Connect to the same port.
On older Quectel modules (like M95 or M66), a hidden AT command may work: This covers Quectel cellular modules (e