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Prepaid Data SIM

You can use KT SIM card exchange cheaply with your own mobile phone in Korea

Prepaid Data SIM

Get the KT SIM card, and you can use your own cell phone in Korea without paying a fortune!
Prepaid Data SIM (Data only) Simply insert the KT SIM card into your mobile phone to get unlimited access to data.
‘Free’ for incoming voice calls and text messages within the product-use period.

Use the phone you
brought from home

  • DATA

    Unlimited

  • VOICE

    Free for
    incoming

  • TEXT

    Free for
    incoming

After 3GB of data usage on a line in a day, you may still use data service unlimited at the speed of 5Mbps.
You get your daily 3GB every midnight.

Kinds of SIM cards

(※ Vat is included.)

Kinds of SIM cards
Kinds Period of use
6,600 KRW 1Day(24h)
27,500 KRW 5Days(120h)
38,500 KRW 10Days(240h)
60,500 KRW 20Days(480h)
71,500 KRW 30Days(720h)

Use Rates

Benefits available

Benefits available
DATA VOICE TEXT
Unlimited Free for incoming
voice calls
Free for incoming
text messages

SIM card purchase and use instructions

  • Confirmation of items prior to use of service.

    Step 1 Confirmation of items prior to use of service.
    • Before using the service, confirm if your country lock has been terminated by contacting your communication company!
  • Visit Roaming Center (Incheon/Gimpo/Gimhae)

    Step 2 Visit KT Roaming Center (Incheon/Gimpo/Gimhae/Busan Harbor)
    • Required Documents : ID cards(passport, residence card, etc.)
  • Receipt of SIM card /Test if it is usable or not / Payment

    Step 3 Receipt of SIM card /Test if it is usable or not / Payment
    • After receipt of SIMcard, test if it is usable or not.
    • Receipt by a third party is not possible.
    • Payment is possible with a credit card or a check.

Cautions

  • KT SIM does not support the personal authentication.
  • To use the prepaid SIM, your cellphone’s country lock should be terminated.
  • You are advised to confirm this through your communication company.
  • This service is possible at terminals with the WCDMA function.
  • Use may not be possible according to terminal model and frequency band.
  • After installation, the prepayment chip is identified by the cellphone turning itself on and off up to a maximum of five times, according to the terminal model.
  • Video calls may be unusable according to your mobile phone model.
  • For rental inquiries, contact KT Roaming Customer Center.
  • +82-2-2190-0901(free everywhere at KT mobile phone, press 7 for foreign customer)
      # for foreign customer : Mon~Fri, 9AM~6PM local time? (Except on holidays)

SIM Settings

  1. 1Turn off mobile phone power, install SIM into SIM card slot.
  2. 2Turn on power, set Wi-Fi flight mode to OFF and Data Network to ON.

  3. 3After double-re booting, confirm if the antenna is well indicated.
    • For indication of "Non-service area" : Re-boot until the antenna is indicated.
    • For indication of "no chip card" to the antenna : Check if SIM is properly set. If it fails to continue recognizing SIM, check if the terminal is unusable. (For exchange and refund, inquire into the store.)
  4. 4If the carrier “KT” is chosen, but there is no data access, check the APN setup.

    (Set-up → Show Networks → Mobile Network → Access Point Name)

    • In case of auto-identification : Select the relevant APN.
    • In case of non-auto-identification : Add menu button → new APN at APN. Input/save following items.
    APN (LTE)
    lte.ktfwing.com
    MCC
    450
    MMSC
    http://mmsc.ktfwing.com:9082
    MNC
    08
  1. 1Set Wi-Fi and flight mode to OFF and cell roller data to ON.
    • Post- iPhone6 models need setting to LTE activation → data exclusive use.
  2. 2Turn off mobile phone power and install SIM to chip slot.
  3. 3After double-rebooting, check if the antenna is well indicated.
    • For indication of "Non-service area" : Re-boot until the antenna is indicated.
      ※ Pre-iPhone4S models may take more than 15 minutes for the antenna to be indicated.
    • For indication of “no chip card” to the antenna : Check if SIM is properly set. If it fails to continue recognizing SIM, check if the terminal is unusable.
  4. 4If the carrier “KT” is chosen, but there is no data access, first try deleting the phone’s profile
    (Set-up → General → Profile) before turning on the device again.
    • ※ Once deleted, the profile cannot be restored. Only perform this step if you have tried all of the other previous options.
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