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Port your number in South Korea

Looking to switch carriers in South Korea? This guide covers the essential regulations and procedures for keeping your number while moving between SK Telecom, KT and LG Uplus.

How the process works

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Phased implementation: initial portability from dominant operator; later expanded to other operators

Technical Switch

The migration is overseen by Government/Information Ministry (historical rollout) and telecom regulator framework using the .

Service Benchmarks

Mobile Timing

Operational window 10:00–20:00 (excl. holidays); internal controls: donor non-response timeout 60s; time-out notice at 120s; authentication request time-check 30 min (per KTOA 운영지침).

Downtime

Minimal

Market Intel

Coverage Scope Mobile (phased rollout across operators in 2004–2005)

Regulator Government/Information Ministry (historical rollout) and telecom regulator framework

Consumer Fees Standardized

Major Networks

SK Telecom

LG Uplus

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Expert Guidance

Portability was introduced in phases due to market structure; treat KR as mature portability market operationally.

Common Questions

Is number porting possible in South Korea?

Yes, South Korea currently has Y status for number portability, covering Mobile (phased rollout across operators in 2004–2005) services.

How long will I be without service during the switch?

The maximum allowed service interruption is typically , with the total process usually taking Operational window 10:00–20:00 (excl. holidays); internal controls: donor non-response timeout 60s; time-out notice at 120s; authentication request time-check 30 min (per KTOA 운영지침)..