SIM Cards

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A typical SIM card.

SIM-Subscriber Identity Module

A SIM has three major purposes:

Uses of SIMs

a large amount of information that the suspect has dealt with over the phone to be investigated.

In general, some of this data can help an investigator determine:

  • Phone numbers of calls made/received
  • Contacts
  • SMS details (time/date, recipient, etc.)
  • SMS text (the message itself)


  • Mobile Country Code (MCC): A three-digit code that represents the SIM card's country of origin

References