| How to make a call |
| Intermational calls(Korea → Overseas) |
 |
| Local calls(to another phone) |
 |
| Receiving a call from overseas |
 |
| International Call Access Numbers |
| Country | Country Code | Country | Country Code |
| USA | 1 | Australia | 61 |
| Japan | 81 | Canada | 1 |
| China | 86 | Netherlands | 31 |
| Hong Kong | 852 | Russia | 7 |
| Germany | 49 | United Kingdom | 44 |
| France | 33 | Italy | 39 |
| Singapore | 65 | Malaysia | 6 |
| 6 | 886 |
| Domestic Area Code |
| Area | Code | Area | Code | Area | Code |
| Seoul | 02 | Busan | 051 | Jeju | 064 |
| Incheon | 032 | Daegu | 053 | Daejeon | 042 |
| Ulsan | 052 | Gwangju | 062 | Gyeonggi | 031 |
| Gyeongnam | 055 | Gyeongbuk | 054 | Jeonnam | 063 |
| Chungnam | 041 | Chungbuk | 043 | Jeonbuk | 043 |
