Question: What action may a User Equipment (UE) take with its Universal Integrated Circuit Card (UICC) during an extended idle mode DRX cycle if the UICC does not support the UICC suspension mechanism, but the PIN of the USIM is disabled and deactivation of UICC is authorized in EFAD?
Option 1: Suspend the UICC without any additional conditions.
Option 2: Deactivate the UICC, then re-activate it before the end of the DRX cycle, re-initializing the USIM and verifying its identity through specific Elementary Files (EFs).
Option 3: Immediately terminate any ongoing transmission to conserve power.
Option 4: Enter a low-power state without altering the UICC's active status.
Explanation: When a UICC lacks suspension support but meets deactivation criteria, a UE may choose to deactivate the UICC during extended idle mode DRX cycles to reduce power consumption. However, to maintain connectivity and security, the UE must re-activate the UICC, re-initialize the USIM, and verify the USIM's identity by checking specific EFs (like EFICCID, EFIMSI, EFSUPI_NAI, EFLOCI, EFPSLOCI, or EFEPSLOCI) before the DRX cycle ends or prior to any network transmission. This ensures seamless operation and security upon returning to active state.