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Compromised in the SKT hack? Here's how to sign up for a new SIM.

Published: 28 Apr. 2025, 20:27 Updated: 30 Apr. 2025, 14:22

CHO YONG-JUN
[email protected]

SK Telecom's webpage for free SIM replacement [SCREEN CAPTURE]

SK Telecom is offering users free SIM card replacements after their system suffered from a malware attack, which led to customer SIM data leaks.

SK Telecom's stores are low on SIM cards, but the carrier has opened a website where users can join a waitlist for replacements.

The website only supports Korean as of press time, though the carrier told the Korea JoongAng Daily Wednesday that it was "looking to support" English and other languages.

Below are step-by-step instructions to join the replacement SIM card waitlist.

Click the purple button to start the reservation process for SK Telecom's SIM card replacement [SCREEN CAPTURE]

Step 1: Open SK Telecom's SIM replacement website (https://care.tworld.co.kr/usim/) and click the big blue button.

Step 2: Enter your legal name and the first seven digits of your Korean Resident Registration Number or Alien Registration Card number.

Enter necessary information, including your legal name and the first seven digits of your Korean Resident Registration or Alien Registration Card number SCREEN CAPTURE]

Step 3: Clear the captcha. Once your enter the correct Captcha code, the Captcha section will be grayed out and you will automatically be moved to a section where you can put your phone number down. Enter your SK Telecom phone number and press the circled text to request an authentication code.

Step 4: You'll be redirected to a section where you'll be prompted to enter a six-digit authentication code; do so within three minutes. If necessary, click the circled button for a new authentication number that also resets the timer.

The compulsory terms and conditions checkbox, which is subject to providing your name, phone number, your carrier information, date of birth, gender and other related data to SK Telecom, for authentication purposes and to prevent users from applying for SIM replacement multiple times.[SCREEN CAPTURE]

Step 5: Agree to the compulsory terms and conditions checkbox (it's the only one on the page), which is subject to providing your name, phone number, your carrier information, date of birth, gender and other related data to SK Telecom for authentication purposes and to prevent users from applying for SIM replacement multiple times. Once you click the checkbox, a purple rectangle will appear. Press it to advance to the next step.

This page allows the user to locate specific SK Telecom stores, which can be searched by their name or address. Typing the district name, such as Jung District, may narrow the results down. Search for an SK Telecom store that is convenient for you to visit and click the gray rectangular button to select it .[SCREEN CAPTURE]

Step 6: This page allows you to locate specific SK Telecom stores, which can be searched by their name or address. Typing the district name, such as Jung District, may narrow the results down. Search for an SK Telecom offline store that is convenient for you to visit and click the gray rectangular button to select it.

Click the purple button to complete your reservation. Click the optional tickbox if you also want to replace the SIM cards in your smartwatch or tablets. [SCREEN CAPTURE]

Step 7: The next page will confirm the store that you selected and provide an additional optional tickbox, which you should click if you also want to replace the SIM cards in your smartwatch or tablet.

The page you should see when you have joined the SIM replacement waitlist [SCREEN CAPTURE]

Step 8: Finally click the blue button to join the SIM replacement waitlist. You will receive a text message when your SIM card is ready.

While waiting for the SIM replacement, customers should also sign up for SK Telecom's SIM Protection Service, which prevents SIM cards from working on any other phones but yours.

This requires the users to sign up on https://m.tworld.co.kr/product/callplan?prod_id=NA00008634, which, as of press time, subjects users to a long wait before granting them access.

BY CHO YONG-JUN [[email protected]]