South Korea is 13 hours ahead of the Eastern time zone; 16 hours ahead of the Pacific time zone. Either arrange a time to call, or call during regular Korean daytime hours to prevent disturbing people late at night.
The code used for dialing an international call is 0-1-1.
The country code for South Korea is 82.
Each city in Korea has a unique city code, which you will have to identify. For example, Seoul is city code 2, Pusan is city code 51, and Inchon is code 32.
Dial the number for the person you wish to contact. Phone numbers in South Korea can have seven or eight digits.
An example of a South Korean phone number might be 011-82-(02)738-5836.