What is the SIM card IMSI?

What is the SIM card IMSI?

Each SIM card can be identified on each operatior network by its international mobile subscriber identity or IMSI.

M2M One IMSI format is (15 digits):

  • First 3 digits are Mobile Country Code (MCC).
  • Next 2 digits are Mobile Network Code (MNC).
  • Followed by the mobile station identification number.

An example IMSI is 505010000011111.

Tech Tip:

The following AT command is used to read and identify the IMSI of the SIM card.

AT+CIMI
<IMSI>
OK


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