KOR

You can extend validity date of your SIM with following instructions while enjoying MY SIM ACE C. 

Try to recharge as follows.
– visit website roaming.kt.com
– Click Prepaid SIM.
– Choose Voice Top Up or  Extension of Expiration date.– Agree Terms and Condition
– Enter the contract number (9-digit).
– Choose  Phone Number.
– Choose the amount to recharge.
– Make a payment by using your credit card.

Notes.
– You are needed to recharge your credit as following instruction at pickup points.
– If you want to use more for Calls and Text continuously when used up all of it or if you want to extend expiry date (using period) for data.
– After expiry date, you can’t recharge or reuse your SIM Card.
– Please keep in mind that there is no way to recover after expiry.