Question 1

What is an eSIM?

Accepted Answer

An eSIM is a SIM in digital form, built into your smartphone. Instead of a plastic card, you set up a data plan straight away by scanning a QR code. Nothing has to be removed or inserted.

Question 2

Does my smartphone support eSIM?

Accepted Answer

Most smartphones on sale today support eSIM, including iPhone XS and newer, Galaxy S20 and newer, and Pixel 3 and newer. Look in your settings for an 'Add eSIM' or 'Add mobile plan' option.

Question 3

How does an eSIM work in practice?

Accepted Answer

Once you buy a plan, we email you a QR code. Point your smartphone camera at it to install the eSIM; after landing, switch data roaming on and your phone joins the local network by itself.

Question 4

Will I keep my current phone number when I use an eSIM?

Accepted Answer

Yes, of course. The eSIM runs as a second line for data only. Your current SIM and its number are untouched, so KakaoTalk messages and calls still reach your usual number while the eSIM carries your data.

Question 5

Is an eSIM cheaper than carrier roaming?

Accepted Answer

Yes, it is clearly cheaper. A Yeohaengyusim eSIM can cost up to 90% less than roaming with Korean carriers such as SKT, KT and LGU+. Plans start from ₩1,492, and there are no hidden fees or auto-renewals.

Question 6

How is it different from pocket Wi-Fi?

Accepted Answer

The eSIM lives digitally on your own smartphone, so no extra gadget is needed. Compared with pocket Wi-Fi, you have nothing to collect, recharge or hand back, and you can get online wherever you are straight away.

Question 7

Does hotspot (tethering) work?

Accepted Answer

Yes, most plans allow hotspot use. Turn your smartphone into a mobile hotspot to share its data with a tablet or laptop. Keep in mind that hotspot use can drain your data faster.

Question 8

Which devices can use an eSIM?

Accepted Answer

Most recent smartphones support eSIM, including iPhone XS and newer, Galaxy S20 and newer, and Pixel 3 and newer. The phone must not have a carrier lock (SIM Lock). Look in your settings for an 'Add eSIM' option.

Question 9

Can I start using it straight after I buy?

Accepted Answer

Yes, we email the QR code the moment your payment goes through. Scan it to install the eSIM, ideally at home before you leave; once you land, switch data roaming on and you are online straight away.

Question 10

How do I pay?

Accepted Answer

We accept credit and debit cards (Visa, Mastercard, Maestro, JCB, UnionPay) and Apple Pay. Every payment is handled securely by Adyen.

Question 11

Can I cancel after buying?

Accepted Answer

If the eSIM has not been installed yet (the QR code has not been scanned), you can get a full refund. After the QR code has been scanned and the eSIM set up on a device, a refund is difficult. For details, please contact customer support.

Question 12

How quickly do I receive it after buying?

Accepted Answer

The QR code is sent by email as soon as payment is complete. There is no wait for delivery at all, so it is fine to buy just before departure.

Question 13

Does one eSIM work when I travel to several countries?

Accepted Answer

Yes, a regional eSIM plan covers several countries with a single eSIM. You can find regional plans for Asia, Europe and other areas on the destination pages.

Question 14

How fast is the data?

Accepted Answer

Depending on the local network, you get 4G/LTE or 5G speeds. Speed depends on where you are and the hour, but video calls, maps and social media run smoothly.

Question 15

Does hotspot (tethering) work?

Accepted Answer

Yes, most plans allow hotspot use. In settings, make the eSIM line your data line, then switch on Personal Hotspot to share data with a tablet or laptop too.

Question 16

Is it possible to have more than one eSIM installed?

Accepted Answer

Yes, most smartphones hold multiple eSIM profiles. Only one of them can carry data at once, though, so switch to the right eSIM for each destination.

Question 17

How do I check my data usage?

Accepted Answer

Your account page shows remaining data and usage in real time. Your smartphone's settings also show it under cellular data usage.

Question 18

My eSIM won't connect to a network.

Accepted Answer

First, make sure data roaming is switched on in settings, and that the eSIM line is chosen as the line for data. If it still won't connect, toggle airplane mode off and on, or restart your smartphone.

Question 19

The data speed is very slow.

Accepted Answer

Speeds can drop where the network is congested. Try choosing a network manually in settings and switching to another carrier. On unlimited plans, the fair use policy may limit speed once you pass a certain level of use.

Question 20

I think my smartphone doesn't support eSIM.

Accepted Answer

To use an eSIM, the device must be free of a carrier lock (SIM Lock). Contact your carrier to check whether it is unlocked. If there is no 'Add eSIM' menu in settings, your device may be a model that does not support eSIM.

Question 21

How do I contact customer support?

Accepted Answer

Please email help@yeohaengyusim.kr. We reply within 24 hours. If you describe the situation in detail along with your order number, we can help you faster.

Travelling abroad? One eSIM is all you need

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Choose a plan

Install your eSIM

Connect on arrival

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