You need an area code before making a call domestically in Korea.
Press the one of the following international calling codes. (001, 002, 005, 008, 00365, 00700, 00770)
Then, dial the country code followed by an area code and the telephone number.
E.g. In case you call internationally to the United States, dial one of the abovementioned international calling codes, the country code (+1), the area code (555), and the telephone number (123-4567). So, the format would be 001+1+555+123-4567.
When calling internationally to Korea, dial the international calling code of your country (if applicable), the country code of Korea (+82) followed by an area code (after removing 0), and the telephone number.
E.g. When you call from Australia to Seoul,
Upon arrival in Korea, you can rent a cell phone at the booths of the major mobile network operators such as LG, SK, and KT located in the lobby of Gimhae International Airport.
각 통신사는 약 3,000원/일을 청구하며 발신 전화 요금은 100원/10초입니다.
In order to do so, you must present your valid passport and credit card. The rented cell phone must be returned to the same rental booth. Each mobile network operator will charge you about KRW 3,000 per day while an outgoing call will cost KRW 100 every 10 seconds.
Incoming calls are free. Although the cost of mobile data varies, it will cost about KRW 5,000 per day in many cases. You can benefit from 3G and 4G services in most areas except for remote areas. For more information on cell phone rental, please refer to the website of each mobile network operator.
It is not easy to purchase a SIM card in a place other than the airport.
You may find one at some of the 7-Eleven convenient stores in downtown Busan. However, it is highly recommended you buy a SIM card at the airport since you may find it difficult to visit the store in person and communicate with a local vendor.
You can also purchase a prepaid SIM card online and pick it up upon arrival at Gimhae International Airport.
Payphones are available at the airport, subway stations, and major tourist attractions.
Payphones in Korea accept coins or cards, or coins, prepaid cards, and credit cards. If you want to use a payphone that only accepts cards, you must purchase a prepaid card (worth KRW 3,000, KRW 5,000, and KRW 10,000) or use a T-money card or a credit card.
When using a payphone that only accepts coins, you must insert KRW 10, KRW 50, or KRW 100. As for payphones that accept cards, you can usually use prepaid cards, T-money cards, or credit cards. Since most Koreans have a cellphone or a Smartphone, it is not easy to find payphones in certain areas.