When can I apply to extend my stay in Korea?

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Apply before the expiry date — for most statuses you can apply from 4 months before it. Many registered foreigners can file online through HiKorea e-Application (▒▒▒ some statuses must visit, and visits need a reservation. A receipt is not an approval, and leaving Korea while it is pending can cancel the application. Check your status at HiKorea or ☎1345.