The most utilized traditional solution is a Multi IMSI SIM applet – where numerous subscriptions (characterized by, at least, a specific IMSI value) are pre-loaded at card personalization while applet logic selects the most appropriate subscription depending on a location.

Such a pre-loaded stand-alone Multi IMSI applet solution is quite effective, but has a few drawbacks, two of these being quite important:

Newly acquired sponsored subscriptions (new IMSI ranges) are only effective for customers with new cards as these will be added to the pre-loaded list.
Each card “locks” all preloaded subscriptions during the full card’s lifecycle, with very low utilization levels per subscription.
Some MNOs and MVNOs focus on prompt distribution of new IMSI ranges, some focus on IMSI utilization level increases – while both focus areas lead to requirements towards dynamic OTA management of subscriptions used by a Multi IMSI applet on a card.

In order to meet these challenges, we introduced the IMSI Manager solution within our OTA Connectivity Suite. The product manages IMSI values used by a Multi IMSI applet.

It offers high flexibility in sponsored subscription management by defining several subscription attributes, linking rich profile data to each subscription and including numerous configurationally options.