SK Telecom Refill

SK Telecom is South Korea's largest mobile operator, and its prepaid PPS lines run on a pay-as-you-go balance. A mobile top-up adds credit to the line and keeps the number active for longer.

• Calls and texts: Domestic voice calls and SMS are charged per second and per message, drawn straight from the prepaid balance on the line.
• Mobile data: Add data bundles from 100 MB up to several gigabytes and use them on SK Telecom's nationwide 4G LTE network.
• Line validity: Each top-up extends how long the prepaid number stays active, keeping a Korean 010 number reachable for incoming calls.
• Wi-Fi access: Prepaid smartphone plans include the T-Zone Wi-Fi hotspot network, which does not draw on the data allowance.
• Prepaid without a contract: Suited to short-term visitors, students and light mobile users in South Korea who would rather not sign a monthly plan.

1. Go to https://www.tworld.co.kr/ and sign in with the account linked to the SK Telecom prepaid number you want to top up.
2. Open MY, then go to 데이터/통화 ("Data/Calls").
3. Select 선불폰 충전 ("Prepaid phone top-up"), also shown as PPS 충전.
4. Choose the type of top-up you want: 음성충전 (voice/balance) or 데이터충전 (data).
5. At the first step, 선불이동전화카드 정보입력 ("Enter prepaid mobile card details"), type the card number and PIN from your voucher.
6. Confirm to add the amount to your prepaid balance.

Up to 5 codes can be combined, register them one after another to add their total value to the same line.

You do not have to use the credit in one go. Any amount you don't spend stays on your prepaid balance for later use.

The code can only be applied to an SK Telecom prepaid line, so make sure the number is active on SK Telecom before redeeming.