Question 1

Do tourists actually need a Korean phone number?

Accepted Answer

For most trips, no. With data alone you can use maps, translation, KakaoTalk (over data), and internet calls. You mainly need a Korean number if you must receive Korean SMS or make real phone calls to restaurants, accommodations, or drivers. Decide based on whether your trip actually requires those.

Question 2

Can a tourist get a Korean 010 number?

Accepted Answer

Yes — a number-included prepaid SIM activated with your passport gives you a Korean 010 number. However, long-term or postpaid plans and some services require an Alien Registration Card (ARC). Short-term travelers should pick a prepaid SIM that explicitly includes a number (voice + SMS).

Question 3

Is a data-only eSIM enough for most travelers?

Accepted Answer

Yes — for maps, search, translation, internet calls, and data-based messengers, a data-only eSIM is enough. But data-only plans have no Korean number, so they can't receive Korean SMS or make regular phone calls. If you need number-based verification, consider a number-included SIM separately.

Question 4

What's the difference between having a number and SMS verification?

Accepted Answer

Having a Korean number doesn't guarantee every app verification works. With a number you can usually receive SMS one-time codes (OTP), but the real-name identity check (본인인증) that banks and some apps require only passes if the number is registered in your real name. Whether verification works is covered in detail in our SMS verification guide.

Question 5

Can I keep a Korean number after I leave?

Accepted Answer

A tourist prepaid number expires when its validity ends and can't be taken home. Once the SIM's term lapses, the number is reclaimed. To use the same number again you'd re-activate on a future visit. For important accounts, also register a backup like email so a changed number doesn't lock you out.

Question 6

Can I call Korean numbers (hotels, restaurants) with a tourist SIM?

Accepted Answer

If your SIM includes voice (calling) with a number, you can dial Korean numbers directly. Data-only SIMs can't make regular calls, but you can substitute internet-calling apps or messaging via hotel/booking sites. If you expect to make many reservation calls, choose a plan that includes voice.