The set command requests product serial number identification.
Syntax:
+CGSN[=<snt>]
The set command parameters and their defined values are the following:
Response syntax when <snt>=0
(or
omitted):
<sn>
Response syntax for other
<snt> values:+CGSN: <string>
where <string> can be <imei>, <imeisv>, or <svn>.
The following command example reads the serial number:
AT+CGSN
352656100367872
OK
The following command example reads the IMEI:
AT+CGSN=1
+CGSN: "352656100367872"
OK