IMSI (International mobile Subscriber Identity)

Unique Identifier for Mobile Network Users

The International Mobile Subscriber Identity (IMSI) is a unique number associated with all cellular networks' user subscriptions. Stored in the SIM card, IMSI is used by the network to identify the user while roaming and authenticating the subscriber. It plays a vital role in mobile network security and management, ensuring that the right subscriber gets access to the network and services.