Three fundamental terms in the SIM card world are:

• Integrated Circuit Card Identification (ICCID)
  ICCID is the number that identifies the SIM card.
• International Mobile Subscriber Identity (IMSI)
  IMSI uniquely identifies all Global System for Mobile Communications Association (GSMA) mobile phone subscribers.
• International Mobile Equipment Identity (IMEI)
  IMEI is a unique number that signifies the type of mobile device or hardware.

Let’s take a closer look at ICCID, IMSI and IMEI and what they mean for your global deployment.