Question: Under what conditions must a Mobile Equipment (ME) delete all stored Temporary Mobile Subscriber Identity (TMPI), International Mobile Subscriber Identity (IMPI) pairs from non-volatile memory?
Option 1: When the ME is powered off, or when the BSF initiates a new bootstrapping procedure.
Option 2: - The UICC is removed while the ME is powered on, - A different UICC is inserted during ME power-up, - No UICC is present at ME power-up.
Option 3: When the BSF updates its (TMPI, IMPI) pairs or when the ME's storage capacity is reached.
Option 4: Daily, as part of routine maintenance, or when the user changes their SIM PIN.
Explanation: This option correctly outlines the specific conditions under which an ME must delete stored (TMPI, IMPI) pairs, ensuring security and proper functionality when there are changes in the UICC's presence or identity during power cycles of the ME.