iSIM is an integrated eSIM which maybe integrated into the SoC design ready for use via the tamper resistant OS as and when ready. This is very useful for example with the right to repair movement and white goods; at present the call our charge for white goods can make them hard to repair, and a dedicated eSIM per device not worth it, hwever when there is a fault the iSIM can obtain an IMSI and send over the air what the fault is and not only make replacement easier but also monitor parts and ultimately make devices that need less repair, have spare parts that fail available at the right locations, etc.