What is the ICCID number and why is it relevant to cellular IoT?

What is the ICCID number?

The barcode on the back of a SIM card holds more significance than meets the eye. Encoded within it is a unique and non-duplicable number known as the ICCID (Integrated Circuit Card Identifier). The ICCID serves as an identification code for the SIM card, consisting of either 19 or 20 digits. Each ICCID is distinct, ensuring its uniqueness among SIM cards. This identifier plays a crucial role in accurately identifying and managing SIM cards within the mobile network infrastructure, enabling seamless connectivity and service provisioning.

• The first two digits of the ICCID of the SIM card are 89, which means that it comes from the telecommunications industry, as the ICCID number is also used for other integrated circuit cards, such as ID cards, credit cards, etc.
• Then comes the country code, which is either 2 or 3 digits long, regardless of the region. The country code is determined by the International Telephone Union (ITU) and is different from the Mobile Country Code (MCC) used in IMSI.
• The next number is the telecommunications network code (MNC), which is the identifier of the telecommunications network that issued the SIM card, usually 1-4 digits
• After the MNC, the ICCID numbers of SIM cards are unique numbers to identify the uniqueness of each card
  

How many digits does the ICCID number have?

The ICCID (Integrated Circuit Card Identifier) number typically consists of 19 or 20 digits. However, it's important to note that the exact length of an ICCID can vary depending on the specific SIM card and mobile network operator. In general, most ICCIDs adhere to the 19 or 20-digit format.

What is an ICCID number used for?

The ICCID (Integrated Circuit Card Identifier) number is a unique numerical code assigned to each SIM card as a unique identifier from other cards. Similar to social security numbers, ICCIDs allow cellular network providers to track and manage individual SIM cards within their network, providing accurate identification, authentication, and service provisioning for each card. ICCID plays a vital role in ensuring the correct connection and management of SIM cards in mobile communication systems.

Why is ICCID relevant to cellular IoT?

The ICCID is an integral part of the communication between IoT devices and cellular network providers. The ICCID of your SIM card determines which cellular networks your device can access, your local network operator will need to be able to recognize them. Therefore, this identifier is essential for cellular network connectivity.

How do I find my ICCID number?

Usually, the ICCID number is printed on the back of the SIM card itself or on the packaging. When you buy a new SIM card, it usually comes with a plastic holder or packaging with the ICCID number clearly displayed for your convenience.

Also, depending on the type of device you are using, you can also find the ICCID number in the user interface or in the settings menu. For mobile phones, accessing the ICCID number is usually simple. Open the Settings menu and navigate to the section related to your SIM card or cellular network. Look for options like About Phone, About Device, or SIM Status. In this section you should be able to find details about your SIM card, including the ICCID number.

What is the difference between ICCID and IMEI numbers?

The IMEI (International Mobile Equipment Identity) and ICCID (Integrated Circuit Card Identifier) numbers serve different identification purposes in telecommunications. The IMEI is a unique number assigned to a mobile device, such as a smartphone or tablet, used for identifying the device itself on a network. In contrast, the ICCID is a unique serial number assigned to a SIM card, used to identify the subscriber's account information for network services. While the IMEI is associated with the device hardware, the ICCID is linked to the mobile subscriber identity provided by the SIM card.

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