KT 4G and 5G mobile coverage map
Check the KT network before you sign up. Sogudo calculates 4G and 5G mobile signal propagation from the available antenna data, for every address on the map. Enter yours to see the expected signal.
KT map
- Last generated
- October 15, 2026
- Technologies modelled
- 3G · 4G · 5G
- Population density
- GHS-SMOD R2023AYes
- Terrain (line of sight)
- GEDTM30 v1.2Yes
- Resolution
- 30 m
How this map is built
Antenna azimuths are not published for South Korea: coverage is drawn as circles around each site.
0% of the sites have a published antenna height; the model assumes 35 m elsewhere.
Terrain: GEDTM30 v1.2 — Global Ensemble Digital Terrain Model, 30 m (CC BY 4.0). Built on Copernicus WorldDEM-30 (GLO-30), ALOS World 3D-30m (AW3D30).GEDTM30 © OpenGeoHub (CC BY 4.0), produced using Copernicus WorldDEM-30 © DLR e.V. 2010-2014 and © Airbus Defence and Space GmbH 2014-2018 provided under COPERNICUS by the European Union and ESA, all rights reserved, and ALOS World 3D-30m © JAXA
Population zones: GHS-SMOD R2023A (Global Human Settlement Layer, degree of urbanisation), epoch 2025, 1 km (CC BY 4.0).© European Union, 1995-2026 — GHSL, Joint Research Centre (CC BY 4.0)
Test the KT network at your address
- Interactive mobile network map
- 2M+ tests a year
- Multi-operator 4G and 5G
The network behind the map
Antenna data available for KT · South Korea
Antenna sites
188,452
- 3G
- 52,583
- 4G
- 151,963
- 5G
- 67,641
Frequency bands
How many KT sites use each band.
3G
| Band | Sites |
|---|---|
| 2100 MHz | 52,583 |
KT runs its 3G network on 2100 MHz.
4G
| Band | Sites |
|---|---|
| 800 MHz | 151,963 |
KT runs its 4G network on 800 MHz.
5G
| Band | Sites |
|---|---|
| 3500 MHz | 67,641 |
KT runs its 5G network on 3500 MHz.
Shared network agreements
Reciprocal roaming
Customers of KT and SKT can each use the other network where their own has no coverage.
Area: 432 rural/coastal/farm villages (52 counties)
Reciprocal roaming
Customers of KT and LG U+ can each use the other network where their own has no coverage.
Area: 432 rural/coastal/farm villages (52 counties)
KT compared with SKT, LG U+
Discover our comparison of mobile networks in South Korea. Compare the KT coverage map with SKT, LG U+ at the same address to see who delivers the strongest signal where you are.
Frequently asked questions about KT coverage
Does KT have good coverage in South Korea?
Coverage changes from one street to the next, so the answer depends on where you are. Search your own address on the map above to see the KT signal there.
Does KT offer 5G in South Korea?
Yes. KT runs 5G from 67,641 of its sites. Switch the map to 5G to see the covered areas.
Is the KT map up to date?
The map is built from antenna data dated October 2026, and the KT network facts were last verified on August 14, 2026. Sogudo does not resell KT data. Coverage accounts for each antenna's sectors, the terrain between you and the antenna, and the density of the built environment around it.
Is Sogudo affiliated with KT?
No. Sogudo is independent and computes coverage from public antenna data.