MNP is a system that allows mobile phone subscribers to keep their existing phone numbers even if they change operators, preventing customers' inconvenience caused by changing phone numbers, expanding the scope of choice of operators, and providing benefits through fair competition.
Number portability application service
Mobile phone service
Number portability restriction period
3 months from the date of number porting, new registration, and name change
Number portability operation hours
Operation hours: 10:00 - 20:00 (excluding holidays and regular PM days)
Closed on new year's day, lunar new year, chuseok, and sundays
Article 58 (Telecommunications Number Portability) of the Telecommunications Business Act
Notification of the Ministry of Science and ICT No. 2023-41 (Standards for the Implementation of Number Portability for Mobile Phone Services)
Mobile number portability
Find information on filing a complaint and business operation rules related to mobile number portability.
Customer Support Center 1588-0413
