Online Korean ID verification
If you activated a prepaid SIM card using a passport, you won’t be able to verify your ID online (본인인증). Korean Online ID verification requires ARC information. If you need online Korean ID Verification, send us a copy of the ARC card.
Passport Activated Prepaid SIM card can only use for 90 days since activation but you can extend the service period by verifying your ID with ARC. Please send us your ARC if you want to keep your current cell phone number more than 90 days.
Recharge Credit Guide
Purchased credits are only valid for 30 days upon receiving it, and users must recharge their credits monthly to maintain service. After 90 days with no recharging, your SIM card will just be able to receive calls and texts for an additional ten-day grace period. After 90 days of no recharging, your prepaid phone number will be lost.