Tap the situation closest to yours and the answer appears right away. Based on N-Telecom guidance as of November 5, 2026.
Yes, prepaid can be activated even with unpaid bills at another carrier. Even if the phone is suspended, you can apply with a new number by using KakaoTalk or Toss authentication over Wi-Fi. PASS does not work on a canceled line. If you have unpaid KT bills and keep using that phone, choose LG. If it is a different spare or unlocked phone with no unpaid bills, KT works too.
Apply for activationYes. Prepaid is activated in your own name after identity verification, without a credit check. Whether you can apply yourself depends on whether you have a simple authentication certificate, not on rehabilitation. If you only have financial overdue bills and no telecom overdue bills, postpaid activation is possible, but in a credit delinquency situation, prepaid new sign-up goes more smoothly.
Apply for activationIf you used N-Telecom for 3 months or more, you can activate right after cancellation. If less than 3 months, you can activate one month after cancellation. If unpaid N-Telecom bills remain, pay them off first.
Apply for activationIf you have unpaid N-Telecom bills, even prepaid cannot be activated. Check the unpaid amount at 1899-7700 (paid call), and you can proceed after paying in full.
If the child will only use it, you can apply directly in the parent’s name. Micropayment is also blocked. In this case, the parent handles the top-up and confirmation call. If you need it in the child’s name, it is in-person activation, and the parent can go alone with their own ID and a family relation certificate. Activation is available from age 4.
Apply in the parent’s nameIf it is mostly for calls, the 300MB Lite (33,000 KRW/mo) with calls included is a fit. They can use data on home Wi-Fi. If there is no certificate, we guide you to in-person activation.
View plansWith prepaid, micropayment is blocked by default, so it is good for keeping work use separate. You just top up what you use. For authentication use, there are low plans such as LTE Basic 1 (12,100 KRW/mo).
View plansYes, sole proprietors can activate online too. A tax invoice is possible after your personal and business names are linked, and you request the link by visiting a center or calling 114 (free) or 1899-7700 (paid). A corporate name works only with MVNO postpaid.
Apply for activationForeigners get 1 line per person and can only use in-person activation, bringing a passport or Alien Registration Card. It is 100% by reservation.
Make a visit reservation inquiryNo. Using a prepaid phone has nothing to do with your credit score.
No. Micropayment is blocked on prepaid phones. That is why they work well as a child’s phone or a work phone.
A phone with overdue LG bills can be activated as prepaid on either KT or LG. If you keep using a phone with unpaid KT bills, use an LG SIM.
A number canceled for not topping up can be restored if you apply within 7 days of cancellation for KT, or within the month of cancellation for LG. For a number brought from another carrier, apply within 2 days.
You can restore it within 14 days of cancellation for KT, or until the day of cancellation for LG. For a number brought from another carrier, apply within 2 days.
If you used N-Telecom for 3 months or more, right after cancellation; if less than 3 months, one month after cancellation. It is the same when canceled for not topping up. The rule of 3 lines in 180 days stays the same.
Activation is available from age 4. A parent can do in-person activation with their ID and a family relation certificate. A minor gets 1 prepaid line.
Many people choose a prepaid plan with micropayment blocked. You can see plans that fit the usage in Recommendations by usage.
New number activation
Number porting (MNP)
eSIM activation
Unpaid or suspended
Credit or rehabilitation
Work or second phone
Child’s phone
Activation for foreigners
In-person activation
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