Question: What is the primary condition for the presence of the EFePDGIdEm (Emergency ePDG Identifier) file in a USIM application?
Option 1: When the UE (User Equipment) is connected to a 5G network.
Option 2: If both service n°111 and service n°110 are 'available'.
Option 3: Upon initialization of the USIM application for the first time.
Option 4: When an emergency call is attempted without a valid IMSI (International Mobile Subscriber Identity).
Explanation: The correct answer highlights the specific condition under which the EFePDGIdEm file must be present in the USIM application, related to the availability of services n°111 and n°110, emphasizing service provisioning's importance in determining USIM configuration, especially for emergency services like ePDG identifiers.