Multi-IMSI SIM
Updated
A multi-IMSI SIM holds several subscriber identities (IMSIs) from different home networks and switches between them, usually with an application on the SIM. It lets one card use the roaming agreements of several home operators.
In practice
Switching IMSI takes the device off the network for a moment and changes the identity it presents, so a fleet with multi-IMSI SIMs needs a platform that tracks the active IMSI of each ICCID. There is no single standard for the switching logic.
Reference
Related terms
- IMSI (International Mobile Subscriber Identity)
- SIM Application Toolkit (STK)
- Roaming
- Permanent roaming