It seems there are eCall dedicated SIM cards, which cannot be used for other purposes. Though I'm confused why it is required at all, as you don't need any SIM

It seems there are eCall dedicated SIM cards, which cannot be used for other purposes. Though I'm confused why it is required at all, as you don't need any SIM card to call 112 emergency number. >The in-vehicle system has a valid SIM that enables the provision of the eCall service. It is to be configured only for making an eCall, or it could also be used, in addition and as optional, for commercial service provision. In the first case, the IVS will be in a dormant mode (not traceable and active only in case of eCall triggering) https://eena.org/wp-content/uploads/eCall-and-open-issues-2018-revision.pdf https://eena.org/wp-content/uploads/eCall-and-open-issues-20...