Sim does not work for data in Korea. They also claim 24/7 support but they haven’t been online for the last 6 hours. Avoid company, I was left without any internet access when I landed and had to scramble poor free wifi to buy a different eSIM.

They still have not refunded me going to have to file a charge back. Avoid at all costs

Apr 2, 2025

MicroEsim

Michaelused in South Korea

SIM was very slow. Could barely hit a few MBPs a second.

Mar 31, 2025

Saily

TartarMEused in South Korea

Installation, price, set up was as easy as you can get. However, the speed in South Korea was abysmal (I had better experience in other country).
Usually slow but usable, but at times you opened Google Maps and it wouldn't even finish loading your "pins". So stressful to use, up to the point that one friend with the same SIM got himself a different one during the trip and I hopped Free Wi-Fis. Not what I bought this SIM for!

Nov 15, 2024

Airhub

jamieused in South Korea

I purchased an eSIM for my travel to South Korea. On their website, they say it 'operates on the SK Telecom Network in South Korea'; however, all traffic is routed to Hong Kong, which caused very slow 3g speeds and made it impossible to use some apps like ChatGPT.

May 29, 2024

GLOBAL YO

Merryused in South Korea

I bought two eSIM for Korea, one registered fine and worked but the other one did not register.
So I tried to contact them for help but there is no response ever.
I thought this was a good deal but it is not.
Try to avoid Global Yo as you won’t get any help or refund for your failing eSIM.

May 26, 2024

GLOBAL YO

Johnused in South Korea

The esim doesn't work, can't register to network

May 2, 2024

GlobaleSIM

Love_eSIMused in South Korea

I was hesitant at first, but I am glad that I made the purchase!

I am really happy that I was able to have data connection anywhere I go. I recommend this esim if you are traveling and wanted to have an awesome roaming connection.

Sep 28, 2022

Airhub

Laurused in South Korea

Excellent customer service at Airhub.
Thank you for the amazing support!

Sep 27, 2022

Frequently Asked Questions

What are the major mobile networks available for a travel eSIM in South Korea?

South Korea is served by several major mobile networks. These include:

SK Telecom, the country’s largest mobile carrier, providing widespread coverage and advanced technologies.
KT Corporation, a leading telecommunications company offering a range of mobile and internet services.
LG Uplus, a comprehensive provider of mobile, internet, and IPTV services throughout South Korea.

In addition to these major carriers, several Mobile Virtual Network Operators (MVNOs) operate in South Korea, such as KT M Mobile and SK7mobile. However, the majority of travel eSIMs utilize the infrastructure of the primary Mobile Network Operators listed above to provide service.

How many travel eSIM brands (providers) are available for use in South Korea, and how many prepaid data plans are there?

Currently, there are over 80 travel eSIM brands offering service in South Korea, with a selection of over 2700 prepaid data plans available. This represents a wide variety of options, making it easy for travelers to find an eSIM that suits their needs.

Summarized by Gen AI. Last updated: April 16, 2025