KT - South Korea

Search Criteria
Carrier
KT
Country
South Korea Flag of South Korea View country details


KT (South Korea) uses 1 UMTS band, 3 LTE bands, and 2 5G NR bands. Find out if your unlocked phone or mobile device will work with KT (South Korea). See the tables below for details.

Check device compatibility

Carrier website: http://www.kt.com/

Last updated: 2024/08/04 - See latest updates

KT, also known as Korea Telecom, is South Korea's largest telecom carrier and a leader in the Fourth Industrial Revolution. It offers a range of innovative 5G technology and intelligent network services. Here are some key points about KT's mobile network:

  1. 5G Coverage: KT provides extensive 5G coverage across South Korea, including major cities like Seoul, Busan, Incheon, Daegu, Daejeon, Gwangju, Suwon-si, Goyang-si, Seongnam-si, Ulsan, Bucheon-si, Jeonju, Ansan-si, Cheongju-si, and Anyang-si.

  2. Bundle Plans: KT offers cellular, IPTV, and internet bundles, which can be customized to meet individual needs. These bundles often include options for different internet speeds (100 Mbps, 500 Mbps, 1 Gbps) and TV channel packages.

  3. Customer Service: For customer service, you can contact KT at +82-80-448-0100 for domestic calls and +82-2-2190-0901 or +82-2-2190-1180 for international calls.

  4. History and Structure: KT was once a fully state-owned entity but is now largely private. It has its own IPTV and internet services, which were developed from its original state-owned telephone operations. KT also has a subsidiary, KT Skylife, which provides satellite TV services.

  5. Coverage Maps: KT's network coverage and speed maps are available on nPerf.com, which provides real-time data from user tests. These maps are updated hourly for coverage and every 15 minutes for speed data.

Overall, KT's mobile network is well-established and offers a variety of services to meet different user needs.

Frequency Bands

UMTS

Name Interface Description
B1 (2100 MHz) UMTS

KT South Korea uses the UMTS frequency band B1 (2100 MHz).

Supported UMTS Protocols

Name Generation
UMTS 3G
HSPA+ 3.5G (4G speed)

LTE

Name Interface Description
B3 (1800 MHz +) LTE

KT South Korea uses the LTE frequency band B3 (1800 MHz +). This band was deployed in 2013.
B8 (900 MHz) LTE

KT South Korea uses the LTE frequency band B8 (900 MHz). The deployment of this band is not specified.
B1 (2100 MHz) LTE

KT South Korea uses the LTE frequency band B1 (2100 MHz). This band was deployed in 2013 as part of the LTE frequency auction results, where KT acquired additional 35 MHz (DL/UL = 20/15 MHz) in the 1800 MHz band.

Supported LTE Protocols

Name Generation
LTE 4G
LTE-A 4G

5G NR

Name Interface Description
N78 (3500 MHz) 5G NR

KT South Korea uses the 5G NR frequency band n78, which operates in the 3.42-3.7 GHz range. This band is used for both downlink and uplink transmissions. The deployment of this frequency band was part of the 5G spectrum auction held by the Ministry of Science and ICT in June 2018.
N257 (mmWave 28 GHz) 5G NR

KT South Korea has used the 28 GHz frequency band for 5G NR. The deployment of this band was part of the initial 5G spectrum auction in 2018. However, the use of this band was canceled by the government due to the lack of investment and failure to meet the deployment requirements.

Latest updates