South Korea: Mobile Coverage & Carriers
South Korea has three major mobile network operators: SK Telecom, KT, and LG U+. All three support 3G, 4G/LTE, and 5G technologies. For LTE coverage, roaming eSIMs typically connect to bands B1 (2100 MHz), B3 (1800 MHz), B5 (850 MHz), and B7 (2600 MHz). 5G service uses bands n78 (3.5 GHz) and n257 (mmWave).
Local carriers in South Korea issue eSIMs, making digital activation straightforward for visitors. A roaming eSIM will generally access the same band infrastructure across the three operators, though specific band availability may vary by location and network.
| Connectivity | As publicly reported |
|---|---|
| Network generations | 3G, 4G/LTE, 5G |
| Main mobile networks (MNOs) | SK Telecom, KT, LG U+ |
| Key travel bands | B1(2100), B3(1800), B5(850), B7(2600), n78(3.5GHz), n257(mmWave) |
| Local eSIM support | Local carriers issue eSIMs |
| Region | Asia |
| Capital | Seoul |
| Calling code | +82 |
eSIM for South Korea → · eSIM vs roaming →
Compiled from public-record telecom facts (the MNO roster, commercially-launched 3G/4G/5G generations, deployed travel-relevant bands and local-eSIM support) and verified June 2026; see the source we compile this country from. How we compile this. Plan prices are supplied by the eSIM provider feed at publish time, not stored here.