At+Cimi Request International Mobile Subscriber Identity - Quectel BC95 Manual

has the read form in addition to the execution/set and test forms.
Neul Hi2110 Implementation

When <state>=1, +COPS=0 is automatically selected.
 If a CGATT command is in progress, further execution of the CGATT command will return an "Uplink
busy" error.

3.12. AT+CIMI Request International Mobile Subscriber Identity

This command returns International Mobile Subscriber Identity (string without double quotes).
Execution command causes the TA to return <IMSI>, which is intended to permit the TE to identify the
individual SIM card or active application in the UICC (GSM or USIM) which is attached to MT.
Refer to Chapter 6 for possible <err> values.
AT+CIMI Request International Mobile Subscriber Identity
Execute Command
AT+CIMI
Test Command
AT+CIMI=?
Parameter
<IMSI> International Mobile Subscriber Identity (string without double quotes)
<err> TBD
Example
AT+CIMI
460001357924680
OK
BC95_AT_Commands_Manual
Response
<IMSI>
OK
+CME ERROR: <err>
Response
OK
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