Two external SIMs and software SIMs are supported with commands/API to support selection between the SIMs. SIM cards with ISO/IEC 7816-3 specified interfaces are supported and the supported UICC/eUICC interface is compliant with the following
- ETSI TS 102 221 – Smart Cards, UICC-Terminal interface, Physical and logical characteristics
- ETSI TS 103 383 – Smart Cards, Embedded UICC, Requirements Specification
The physical interface for the eUICC is the same as the removable UICC. Both class B (supply voltage 3.0 V) and class C (supply voltage 1.8 V) operation is supported. If two external SIMs are used, both must use the same class/voltage.
For eUICC, M2M SGP.02, Consumer SGP.22, and IoT SGP.32 SIM provisioning is supported.
SoftSIM is supported through a standard SIM API, available upon request.