Question: In a USIM, if multiple MSISDN numbers are stored and the Mobile Equipment (ME) displays these numbers during initialization, which one is displayed with priority?
Option 1: The most recently added MSISDN number
Option 2: The MSISDN associated with the primary bearer capability
Option 3: The MSISDN stored in the first record of EFMSISDN
Option 4: The MSISDN with the shortest alpha-identifier (X bytes)
Explanation: According to USIM application specifications, when multiple MSISDN numbers are stored and the ME displays them during initialization, priority is given to the MSISDN stored in the first record of EFMSISDN. This ensures a consistent display behavior across different ME implementations, highlighting the importance of record ordering in EFMSISDN for subscriber identity presentation.