Choose an operator in South Korea
Best cell phone service in South Korea
Who has the best cell phone service? It depends on exactly where you are. Sogudo lets you compare SKT, KT, LG U+ coverage at your own address - on a free map built from real antenna data - so you can see who actually has the best cell service in your area, not just nationwide averages.
The networks behind the map
What every operator in South Korea actually runs, counted from the same antenna data the maps are built on.
Operators compared
| Operator | Sites | 3G | 4G | 5G |
|---|---|---|---|---|
| SKT | 251,341 | 98,813 | 198,173 | 78,666 |
| KT | 191,890 | 54,329 | 152,682 | 66,892 |
| LG U+ | 188,035 | — | 166,112 | 67,232 |
Shared networks
- SKT: a reciprocal national roaming agreement with KT432 rural/coastal/farm villages (52 counties)
- SKT: a reciprocal national roaming agreement with LG U+432 rural/coastal/farm villages (52 counties)
- KT: a reciprocal national roaming agreement with SKT432 rural/coastal/farm villages (52 counties)
- KT: a reciprocal national roaming agreement with LG U+432 rural/coastal/farm villages (52 counties)
- LG U+: a reciprocal national roaming agreement with SKT432 rural/coastal/farm villages (52 counties)
- LG U+: a reciprocal national roaming agreement with KT432 rural/coastal/farm villages (52 counties)
Where 3G stands
- SKT still operates its 3G network.
- KT still operates its 3G network.
- LG U+ shut down its 3G network in June 2021.
Compare operators
Open an operator to see its coverage map and compare 4G and 5G areas at your address.
Which network has the best coverage near you?
There is no single best network at country level - coverage changes from street to street. One operator leads in the countryside, another in the city. The only answer that matters is yours: search your address above and compare them all at the exact place where you live, work or travel.
Frequently asked questions about cell phone service in South Korea
Who has the best cell phone service?
There's no nationwide winner - it depends on your address. Compare SKT, KT, LG U+ on Sogudo at your exact location to see who has the best coverage for you.
How many mobile operators are in South Korea?
South Korea has 3 mobile operators mapped on Sogudo: SKT, KT, LG U+.
Is 5G available in South Korea?
Selected operators in South Korea have started rolling out 5G in major urban areas. Switch the map to 5G to see covered zones.
How do I compare operators in South Korea?
Pick any operator from the list, then switch operators on the map to compare coverage at the same address.
Is the coverage map up to date?
The map is regenerated monthly from public mobile-antenna data. Sogudo is fully independent and not affiliated with any operator.