MultiIMSI

MultiIMSI refers to a telecommunications technology that allows a single mobile device to store and utilize multiple International Mobile Subscriber Identities (IMSI). The IMSI is a unique identifier assigned to each subscriber in a mobile network, crucial for authentication and network access. Traditionally, a SIM card or eSIM holds one IMSI, linking the device to a specific subscriber profile and mobile network operator.

By incorporating multiple IMSIs, a device gains the capability to switch between different network operators or subscription plans seamlessly. This can be beneficial for various reasons, such as cost optimization by selecting the cheapest available network, improved coverage by connecting to the strongest signal regardless of the operator, or enhanced security through the use of different identities.

The implementation of multiIMSI can vary. It might involve specialized hardware within the device or advanced SIM/eSIM technologies that can manage multiple IMSI profiles. Users can typically select which IMSI profile to use manually or configure the device for automatic selection based on predefined criteria like network availability, cost, or roaming status. This technology aims to provide greater flexibility and control over mobile connectivity for users.