Question: How does a Mobile Station (MS) handle a received Service-Centre-Time-Stamp if it has knowledge of its local time zone, according to 3GPP specifications for SMS?
Option 1: The MS automatically converts the received time to its local time and stores both the original and converted times.
Option 2: The MS may display the received time in its local time but stores the message with the original time unchanged.
Option 3: The MS ignores the Time Zone code and always displays the received time as is, without conversion.
Option 4: The MS requests the sending entity to resend the message with the time adjusted to the MS's local time zone.
Explanation: This option correctly reflects the specification that while the MS may choose to display the time in its local time zone for user convenience, it must store the original message (including any embedded times) without alteration. This ensures data integrity and consistency across different time zones.