Today, we’re diving into three that you might encounter: CSN, CSN2, and EID. While they sound similar, they represent different identifiers used in mobile devices and SIM cards.
What is CSN and CSN2?
The Card Serial Number (CSN) is a unique identifier for SIM cards, aiding mobile network operators in identifying and authenticating SIMs on their network. Found on the SIM card and in device settings, the CSN is key to mobile security. Meanwhile, the CSN2 or ICCID includes the CSN and extra data like the country and network codes. This longer identifier helps manage SIMs, prevent fraud, and facilitate easy device switching for users without losing data. Essentially, CSN and CSN2 are crucial for maintaining network integrity and enhancing user experience.
Understanding EID Explained
The Embedded Identity Document (EID) is essential for eSIM technology, enabling digital SIMs built directly into devices, thus removing the need for physical SIM cards. It uniquely identifies each eSIM for network authentication, simplifying the process of switching mobile networks and managing mobile plans remotely. Found in device settings or through network operators, the EID enhances eSIM security and user convenience, marking a significant shift in mobile device management.
ICCID vs. CSN: Clearing Up Confusion
You might have encountered the term “CSN” (Card Serial Number) alongside ICCID. While they might seem related, CSN is a more generic term for a unique identifier assigned during card manufacturing. In the context of mobile phones, CSN isn’t widely used. The ICCID incorporates the manufacturer’s CSN but adds additional information specific to the mobile network.
