Which item is required when handling cases involving cellular telephones?

• A. Caller's complete cellular telephone number including area code
• B. Owner’s passport number
• C. Ship’s last port of call
• D. Crew manifest number

Answer: (A)

When handling cases involving cellular telephones, you need reliable contact information for the person who called in. The essential item to obtain is the caller’s complete cellular telephone number, including the area code. This allows you to reach them to verify details, gather any missing information, and coordinate follow-up or next steps. The area code is important because it ensures you can dial the number correctly and helps identify the caller’s region or routing needs, which can be crucial for timely communication and proper handling of the case.

The other items listed don’t serve this purpose. A passport number isn’t typically required for phone-related case handling and raises unnecessary privacy concerns. The ship’s last port of call and the crew manifest number relate to vessel operations, not to contact or verify information about a cellular-phone case.