Current and Voltage
Korea’s standard voltage is 220 volts at 60 Hertz, and its power outlets feature two round holes. If you lack a multi-voltage travel adapter, you can request one from your hotel’s front desk or purchase one. Airports, retail shops, major duty-free stores, and convenience stores also carry them.
Mobile Phone Rentals and Roaming Services
Korea’s primary airports, such as Incheon, Gimpo, Gimhae, and Jeju International Airports, host roaming centers run by local telecom providers. Visitors can connect their devices for roaming with a simple registration process. Roaming services, SIM cards, Wi-Fi egg rentals, and smartphone rentals are also available. For more details on fees and locations of roaming centers, check the service provider’s official website.
Roaming services from leading carriers
- KT Roaming Center: roaming.kt.com (Korean, English, Japanese, Chinese)
- SK TELECOM Roaming Center: www.sktroaming.com (Korean, English, Japanese, Chinese)
- LG U+ Roaming Center: www.lguplus.com (Korean, English, Japanese, Chinese)
SIM Card Acquisition (Korean SIM Card)
Travelers can obtain a SIM card for their personal devices, enabling unlimited data and a personal number while in Korea. These prepaid SIM cards often cost less than roaming services and provide unlimited data for durations ranging from 1 to 90 days. Purchase options include CU convenience stores at Incheon International Airport, 7-Eleven stores in major cities, and the official Korea SIM Card website. For optimal convenience, it’s advisable to purchase a SIM card online or at the airport ahead of time.
SIM Card Retail Outlets
- Convenience Stores (airport, city center, etc.): CU at Incheon International Airport and select 7-Eleven branches across the country
- Korea SIM Card & eSIM website: krsim.net (Korean, English, Japanese, Chinese)
- eSIM Korea: Prepaid eSIMs can be purchased online easily. The digital eSIM operates by scanning a provided QR code to install the prepaid data plan. You will receive the eSIM plan via email, eliminating the need to visit a physical store.
- eSIM website: esimkorea.net (English)
Internet Connectivity
In Korea, Internet access is widely available through complimentary public Wi-Fi in places like airports, subway stations, train stations, and some bus stops. PC rooms and cafes are also excellent options, with many PC rooms open 24/7.
Public Wi-Fi: www.wififree.kr (Korean, English)
Postal Services
Travelers often wish to send postcards or letters to family and friends back home. While mailboxes used to be prevalent on nearly every street, they have become less common due to the rise of online communication. If you’re unable to locate a mailbox, you can ask your hotel front desk to send your letters or postcards, or you may visit a nearby post office. More details regarding post office locations and rates are available on the Korea Post website.
Korea Post
www.koreapost.go.kr (Korean)
www.koreapost.go.kr/eng/index.do (English)
Public Telephones
With the widespread use of mobile phones and devices, the number of public phone booths in Korea has diminished. Nevertheless, they can still be found in heavily trafficked areas. Public telephones typically offer local and international calling options, accepting payment via cash or phone cards. Some booths may also accept payments through transportation cards or credit cards, though this is not uniformly available, so it is advisable to verify beforehand.
Domestic Long-distance Calls (Area Codes)
Metropolitan Areas
- Seoul (02)
- Incheon (032)
- Gwangju (062)
- Busan (051)
- Daegu (053)
- Daejeon (042)
- Ulsan (052)
- Sejong (044)
Provinces
- Gyeonggi-do (031)
- Gangwon Province (033)
- Chungcheongbuk-do (043)
- Chungcheongnam-do (041)
- Jeonbuk Province (063)
- Jeollanam-do (061)
- Gyeongsangbuk-do (054)
- Gyeongsangnam-do (055)
- Jeju-do (064)
International Calls
- ① To call Korea from abroad, first dial the international carrier code from your country, followed by 82 (Korea’s country code) + Area code (omit the leading 0) + the number you wish to dial.
- ② To make an international call from Korea, dial one of the international phone carrier numbers listed below, followed by the country code, area code, and the number you are calling.
* International Phone Carriers: 001, 002, 005, 008, etc.
* Prepaid Phone Cards are available at convenience stores and major supermarkets.
This page was last updated on August 21, 2025, and therefore, the information presented here may differ.
Klook.com