What’s the best Korea SIM card for tourists

If you’re looking for the best Korea SIM card for tourists, we can help.

We’ve compiled a list of all the Korea travel SIM cards that can be pre-ordered and picked-up at the airport.

In some Asian countries, Singapore, Malaysia, and Indonesia to name just a few, it’s also possible to have the SIM mailed to your home or to collect it at the airport of departure.

We used a Korea data SIM card from KT Olleh ourselves and we can honestly say that it was a big advantage. 

Not only to use excellent navigational apps such as Naver apps, Google Maps is pretty useless in South Korea, we also loaded a lot of other Korean apps on our phone.  Thanks to these apps we could eat where the locals eat, translate Korean texts and it also became much easier to interact with Koreans. 

I’ve listed some of the apps we used further down in this article.

We cover all the important details about the various tourist SIM cards in Korea, as well as all the aspects that you need to keep in mind when you’re making your selection.

Read on to find the best Korea prepaid SIM card for you.

There is a really good chance that this post contains affiliate links. If you click one of them, we may receive a small commission (for which we are deeply grateful) at no extra cost to you.

Why buy a Korea prepaid SIM card

It’s easy to travel independently around Korea, especially if you can use your smartphone as your travel companion.

We used our data connection a lot in South Korea, the country has several very useful apps for tourists.

Here are the apps that we used the most during our road trip in South Korea: 

• XE currency provides real-time conversion rates between the South Korean Won and your home currency.  
• Kakao Metro guides you through Seoul’s spaghetti-like metro network.  The app also works in Busan, Daegu, Gwangju, and Daejeon.
• Kakao T, this app enables you to call and pay for a taxi similar to Uber.  You can also use it to rent an electric bike. 
• Mangoplate, information on nearby restaurants including reviews
• Papago, fast and accurate translation of South Korean to 13 languages including English,  French, German, Japanese and Chinese.  It works offline and the quality of the translations beats those of Google Translate.
• Emergency Ready, an app provided by the Ministry of Interior and Safety. The app contains information about shelters, police and fire stations.  The government will share updates in case of natural disasters such as typhoons. ( Google Play – Apple Store)
• Visit Korea, an app provided by the Korea Tourism Organization.  It contains opening hours, prices and lots of other useful information about the many sights of the country.  To get the app, scroll to the bottom of the page and click on “KTO Mobile apps”
• If you go to Lotte World or Everland you can use the apps of those theme parks to check the waiting times at the attractions.

Roaming costs are insane and Korea prepaid SIM cards are relatively cheap.  This makes it a good investment, even if you won’t be using your data connection on a daily basis.

South Korea has the world’s best 4G network so it would be a shame not to use it when you visit the country.

Larger cities such as Seoul also count numerous WiFi hotspots.  We tested these with mixed results.  Our experience with these WiFi hotspots is described below.

Free WiFi in Korea

You can find over 500,000 public WiFi hotspots in Seoul alone. With this number, you would think that a data connection is a superfluous luxury but it turned out that it was not.

First of all, it is a hassle to register your phone over and over again at each new hotspot that you come across.  If it would stop there it wouldn’t be such a big thing.

Some registration forms are in Korean only though, making the task extra tedious. And then, to make things worse, after you have finally deciphered the form, you’re sometimes met with the notice that they only accept Korean phone numbers.

We went through this process a few times only to decide that the low cost of a local tourist SIM card, or a pocket WiFi rental, is not worth all the effort registering your phone at each hotspot hoping that it will work. 

Don’t think that none of the WiFi hotspots work for tourists.  There’re free WiFi hotspots you can use, certainly those in hotels and restaurants, but you shouldn’t be blindsided by these huge numbers.   

Here is an overview of free WiFi hotspots in South Korea

 

South Korea SIM cards – The top choices

KT Olleh and SK Telecom offer Korea travel SIM’s. 

On top of that, a bunch of other providers have their own travel SIM’s that also work in South Korea and that can be picked up abroad.

Further down in this article we list all the SIM cards that we could find along with all the information you need such as the included data plan and the fair usage policy.

In this section, we share our top choices.  These are the best data-only SIM’s and the best SIM that support voice calls and text messages.

For short stays

This KT Olleh card offered by Klook is the best for all stays of 30 days or less where a data connection is all you need. 

The SIM comes with unlimited data and has no fair usage policy.

For longer stays

Most SIM cards have a maximum duration of 30 days.  If you want to stay in Korea for longer than 30 days you will either need to buy multiple SIM’s, something that not all providers allow, or you can use this SIM from KT Olleh which can be used up to 90 days.

The 30-day unlimited data SIM has 15 GB of high-speed data/month.  If you consume this 15GB before the end of the month you will get 2GB of high-speed data per day for the remaining days until the end of the month.  The SIM can be extended twice with an additional month.  You will again receive 15 GB of high-speed data with each extension.

For voice calls

All the SIM cards we cover in this article will allow calls with Skype or other similar tools but in some instances, it is still better to make a traditional phone call.  

To do so you will need to buy one of the KT Olleh SIM’s that support voice+text.

These SIM’s can be pre-ordered through Klook and Trazy. 

When pre-ordered through Klook the SIM will have a starting balance of KRW 11,000. 

The SIM’s pre-ordered through Trazy will need to be topped-up before they can be used to make calls or send texts.

For a duration of 5 or 10 days, it’s cheaper to pre-order with Klook, for a duration of 30-days, it’s cheaper to pre-order with Trazy.

At Klook you have to select the package option “domestic calls + texts included”, these domestic calls are free and you will be able to use the balance towards international calls and texts.

The SIM’s have an unlimited data plan with no fair usage policy so your data speed will never be capped.

 

Pocket WiFi or data SIM Korea – what is best

Both are perfect options to stay connected.  

During our past journeys, we used both. 

A WiFi device might be somewhat easier because all you need to do is turn it on and connect to the broadcasted WiFi signal. It is, of course, an extra device to drag along.

Below are some pros and cons of each.

Pocket WiFi for Korea

The main reason to opt for a pocket WiFi device would be that you don’t need to switch SIM’s and you don’t need to change any settings on your phone.  You just need to make sure that your data connection is disabled to avoid any nasty data roaming fees. 

This is great if you’re not really tech-savvy and another advantage is that friends, family, work relations and anybody else who has your phone number will be able to reach you as if you were home.

If you want people to be able to reach you at all times then this is probably the best option.

Another advantage is that you can share the internet connection.  Some devices support just 3 simultaneous connections, others as much as 10.  Some smartphones have a hotspot function which does the same but in our experience, this function drains the phone’s battery pretty quickly. 

The principal disadvantage of a pocket WiFi device is that it is one extra device that you need to carry around and that you will need to charge on a daily basis if you use it frequently.

Prepaid SIM card in Korea

The moment that you install the local tourist SIM in your phone people will no longer be able to reach you on your home carrier’s number.  This may be a blessing, it’s time for a vacation after all. 

If you don’t mind cutting the ties with the home front for the duration of your holiday then a SIM card is by far still the most convenient option if you’re traveling solo or if you will not be sharing the connection with anyone else.

Everybody will still be able to contact you on Skype, as well as other similar tools such as Google Hangouts, or if you prefer you can opt for a SIM which supports voice+data. 

If you opt for such a SIM you will get a local phone number which you could share with relatives at home.

Below is an overview of the different South Korean tourist SIM cards. We included all the important details to help you choose the one that best suits your needs.

Network providers in South Korea

South Korea has the fastest 4G network in the world.  Regardless of which network you use,  you will surf at speeds that you probably can only dream of at home.

The three mobile operators in South Korea are LG U+, SK Telecom, and KT.  They all have an excellent coverage of the country. LG U+ is the winner with a coverage of 99,5% but both other operators also achieve a coverage of at least 95%.

The average download speed is a whopping 40 Mbps, SK Telecom even achieves 65 Mbps.  Upload speeds are lightning fast as well.  You will enjoy at least 10 Mbps with peaks to 15 Mbps with the networks of SK Telecom and LG U+.

All these figures just to show that you don’t need to worry too much about the operator when you choose your SIM card. 

What you need to know and check before buying a Korean travel SIM

When you rent a Korean Pocket WiFi device you can be sure that it works. Before you buy a travel SIM you better check a few things to avoid some nasty surprises.

Here’s a checklist of the things to check before placing your order.

What you need to know before buying a SIM card for South Korea

Make sure to check these 3 things about your phone. 

Googling “technical specs X” where you replace X with the model of your phone should tell you everything you need to know.

Which size of SIM card you need

Over the years the size of the SIM cards has decreased.  Old models had the standard SIM, newer phones use the Micro-SIM and the Nano-SIM.

Almost all Korean travel SIM’s are so-called multi-size SIM’s which means they can be adapted to the required size. 

You can’t do anything wrong with these multi-size SIM’s but if the operator only offers Nano SIM’s (like some do) you better check in advance if this is the right size for your phone.

To check what kind of SIM you need you can open your phone or you can check the technical specifications.

Is your phone unlocked

Locked phones will not work in South Korea, they come with software that prevents them from being used on another network. 

If your phone is locked you might be able to unlock it by calling your phone carrier. 

Locking phones is not common in Europe but many US, Canadian and Japanese carriers lock phones that are bought through them.

Does your phone or pocket WiFi device works in Korea

If your phone is not compatible with the country’s network it will not work.

These are the network frequencies used by SK Telecom and KT Olleh, the two providers which offer tourist SIM cards in South Korea:

• 4G LTE Bands: Band 1(2100MHz), Band 3(1800MHz), Band 5(850MHz), Band 8(900MHz)
• 3G Bands: HSDPA 2100MHz/HSDPA+

Make sure to check if your phone supports these frequencies.  The technical specs of your phone will show the supported frequencies or you could check this page for your telephone.

What to check before buying a South Korean SIM Card

There are of course important differences between the different SIM cards. Here we indicate what to look for when choosing your Korean SIM card.

Data or Data + Voice

Data-only SIM cards are by far the most common flavor among the tourist SIM cards. 

For most visitors, this type of SIM will be all they need. You can’t make any voice calls, and you cannot send text messages either, but you can still call and text using Skype, Whatsapp, Google Hangouts and other similar apps. 

If you do need a local phone number you will need to choose a Data+Voice SIM.

 

Duration

All prepaid SIM cards can be used for a certain number of days.  This period starts when you activate the SIM and in most cases, it cannot be extended.  

If you need a SIM for longer than the provided duration you could see if it is possible to buy 2 cards. However, not all providers allow multiple cards to be purchased on the same person.

Data allowance

Many SIM cards offer unlimited data but the fair usage policy varies wildly among the different providers.  A fair usage policy means that the speed will be throttled after a certain amount of data is used in a certain period of time, usually over the course of a day.

Some providers will cap the speed after 2 or 3 GB is used in one day.  This is, in our experience, relatively generous.  3GB is the equivalent of browsing the internet for 36 hours, streaming 600 songs or watching 6 hours of standard definition video.

Others only allow 500 MB of high-speed data per day.  This is sufficient if you will only occasionally connect to the internet but you will quickly reach the limits of this subscription if you stream audio, video or often check your social media canals.

Once you reach the data limit the speed is reduced to either 3G or 2G.  A speed that may be workable to check some basic webpages but frustrating low if you’re used to 4G.

Some SIM cards can be topped up but this is an exception rather than the rule.  

 

In our below overview you can see all the details about the fair usage policy and if the card can be topped-up we also mention this.

Pick up

Some SIM cards are shipped (for free) but most SIM’s need to be collected at the airport. 

Make sure to take a note of the location as well as the opening hours.

 

In some cases, the order page or the confirmation mail includes a small map that shows where to pick-up your SIM.  As you will not have internet until after you have collected your SIM it is a good idea to print this map or you could store it locally on your phone.  

Not all collection points are open 24/7.  Make sure to check if the location will be open at the time you arrive and bear in mind that you will need to pass migration. It’s also best to provide a little margin in case your flight ends up being delayed.

 

Korea SIM card with airport pick-up

Preorder your Korea SIM card online

Here’s an overview of the different prepaid Korean SIM cards you can preorder online. The overview is organized by provider. 

For each, we list the most important details, if you need more information you can click on the associated links.

The advantage of ordering your Korean SIM card in advance

If you have just come from a long-haul flight, you are probably drowsy and not in the best shape to make a decision about which SIM you need. 

For this reason, we advise you to pre-order your South Korea SIM card online and have it sent to your home address or ready for pick-up at the airport.

Another advantage of ordering online is that you can take all the time you need to compare the different options. 

Korea SIM cards with pick-up at Seoul & Busan airport

KT Olleh (data or data + international calls & texts)

KT, short for Korea Telecom, is South Korea’s largest telephone company. Olleh is the brand name used for cellular broadband services. 

You can choose a data-only SIM or a prepaid SIM card that also supports outgoing voice calls and text messages.  

SIM cards from KT can be pre-ordered online from:

• GetYourGuide: data-only SIM, incoming calls and text messages not supported. 
• Klook: data-only SIM or prepaid SIM that supports voice+text (The prepaid SIM comes with a starting balance of KRW 11,000, enough for 41 minutes of domestic calls or 33 international text messages)
• Trazy: prepaid SIM that supports voice+text  (will need to be topped up online before it can be used to make voice calls or send texts)

With the exception of the SIM’s from GetYourGuide all SIM’s, including the data-only SIM’s, support incoming calls and text messages.  All incoming calls and texts are free.

The prepaid SIM cards can be recharged and extended online.  The data only SIM cannot be extended.

Size: Multi-size SIM cards (Normal, Nano and Micro).  The SIM can be adapted to fit in any mobile phone.

Network: KT Olleh

 

Duration: 1 day (not available with GetYourGuide), 5 days, 10 days or 30 days

 

Pick-up:  The SIM card can be collected at Seoul Incheon airport (terminal 1 & 2), Gimpo Airport or at the harbor or the airport in Busan.  At Incheon airport it can be collected 24 hours/day, make sure to check the opening hours of the office locations.

There is also 1 pick-up location in downtown Seoul at the Hongik University.  If you want to collect your SIM here you will need to pre-order your SIM with Trazy or GetYourGuide.

Activation: The SIM card will be activated at the counter.  If, for some reason, the SIM would not work a refund will be arranged.  Data only SIM’s can be activated on a later date if you prefer. If you want to activate your prepaid SIM on a later date you will need to collect it at the office at Hongik University, this is not possible at other locations.

Topping Up: This is not required as all SIM’s offer unlimited data at high-speed 4G/LTE.

 

 

 

GetYourGuide: Data-only SIM ( Pick up Incheon airport )

• 5 days: KRW 30,692
• 10 days: KRW 43,017
• 30 days: KRW 79,993

Klook: Data-only SIM

• 1-day KRW 5,900
• 5 days KRW 24,800
• 10 days KRW 34,700
• 30 days KRW 64,400

Prepaid SIM

• 5 days KRW 27,500
• 10 days KRW 38,500
• 30 days KRW 74,300

  Trazy: Prepaid SIM

• 1-day KRW 5,900
• 5 days KRW 24,800
• 10 days KRW 33,000
• 30 days KRW 62,000

KT Olleh (data + domestic calls & texts)

This SIM is interesting if you won’t be making international phone calls but want to have the option to make domestic calls.

You are able to receive an unlimited number of international and domestic phone calls and text messages and you can call for 100 minutes to domestic numbers.  You’re also able to send 100 domestic text messages.

The data plan is unlimited.  There is a fair usage policy.  Your speed will be throttled to 400Kbps after you’ve used 10Gb of data.

The SIM card can be extended once for a maximum of 30 days.  The price to extend the duration of the SIM is KRW 3,000/day.  

Size: Multi-size SIM cards (Normal, Nano and Micro).  You get a Nano SIM card with an adapter to the Micro and Normal format.

Network: KT Olleh

 

Duration: 5 days, 7 days,10 days, 15 days or 30 days

 

Pick-up:  The SIM card can be collected at Seoul Incheon airport terminal 1. Make your way to the CU convenience store on the 1st level between arrival gates D & E.  The card can be picked up 24/7.  

Activation: Somebody is available on-site from 8 AM to 8 PM to help with the activation.  You can also register and activate the card yourself.

Topping Up: Topping up is not possible.

 

Trazy:

 

• 5 days: KRW 24,500
• 7 days: KRW 29,900
• 10 days: KRW 34,200
• 15 days: KRW 43,200
• 30 days: KRW 63,100

KT Olleh (longer stays)

This SIM card can be used for stays from 30 to 90 days.  It comes in 3 flavors.  2 variants have an initial duration of 30 days and can be extended twice with another 30 days for a total of 90 days.  To extend the duration you need to visit the KT center near Hongik University Station.  An extension is always for 30 days and costs KRW 20,000.

The third SIM is valid for 90 days out of the box.

All SIM’s can be extended after the 90-day limit if you have an Alien Registration Card.

30-day unlimited SIM – KRW 59,000

This SIM card offers:

• Unlimited domestic calls and text messages
• 10 GB of high-speed 4G data.  Once 10GB has been consumed you will get 2GB of daily high-speed allowance for the remaining duration of your contract.  If you use more than 2GB/day the speed is throttled to 3Mbps until midnight.

30-day unlimited data SIM + voice & text – KRW 43,000

This SIM card offers:

• 100 minutes of local calls, additional calls cost 1.98 won/sec
• 100 local text messages, additional messages cost 22 won/message
• 15 GB of high-speed 4G data.  Once 15GB has been consumed your speed is throttled to 3Mbps until the end of your contract.

90-day SIM card – KRW 24,000

This SIM card offers:

• KRW 40,000 balance to use towards messages, calls or data
• The possibility to make international calls

Local calls cost 1.98 won/sec, messages cost 22 won/message and data costs 20.48 won/MB.  Rates for international calls can be found here.

Size: Multi-size SIM cards (Normal, Nano and Micro).

 

Network: KT Olleh

 

Duration: 30 days, 60 days, 90 days 

 

Pick-up:  The SIM card can be collected at Seoul Incheon airport terminal 1 or 2, Seoul Train Station, Gimpo Airport, and the KT Office near Hongik University Station.   Pay close attention to the opening hours of the pick-up locations.

Activation: The SIM card will be activated instantly between 9 AM and 6 PM.  SIM’s collected before 9 AM will be activated at 9 AM.  Those picked up after 6 PM will be activated the next day.

Topping Up: All SIM’s can be topped up at the KT center near Hongik University or by bank transfer.  The 90-day SIM card can also be topped up at GS25, CU and 7-eleven convenience stores.

 

Trazy:

 

• 30-day unlimited SIM: KRW 59,000
• 30-day unlimited voice+text: KRW 43,000
• 90-day SIM: KRW 24,000

Korea SIM cards with pick-up at Jeju airport

SK Telecom

SK Telecom is the country’s largest wireless operator.  They have a roaming desk at Jeju international airport where you can collect your SIM card. The cards can be pre-ordered at Klook and Trazy.

The SIM cards support incoming calls and text messages but you cannot make voice calls or send text messages.  All incoming calls and texts, both domestic and international, are free.  

Size: Multi-size SIM cards (Normal, Nano and Micro).  The SIM can be adapted to fit in any mobile phone.

Network: SK Telecom

 

Duration: 1 day, 3 days (only on Klook), 5 days, 10 days, 20 days (only on Klook) or 30 days (only on Klook)

 

Pick-up:  The SIM card can be collected at Jeju international airport, at the SKT Roaming desk on the 1st floor in the arrivals hall, open daily from 9 AM to 7 PM.

Activation: To activate the SIM, install it in your phone and restart your phone.  We advise doing this at the counter. If the activation would not work you can arrange a full refund.  It is also possible to activate the card at a later date.

Topping Up & Extending: This is not possible.

 

Fair usage policy: If you use more than 1GB in 24 hours your speed will be capped to 3G ( 400 Kbps) for the remainder of the day.

 

Trazy: 

 

• 1 day: KRW 6,600
• 5 days: KRW 27,500
• 10 days: KRW 38,500

Klook: 

• 1 day KRW 5,800
• 3 days KRW 15,900
• 5 days KRW 24,700
• 10 days KRW 33,700
• 20 days KRW 54,000
• 30 days KRW 62,600

 

Prepaid SIM cards for Korea with pick-up abroad (via Klook)

Here are a few extra options for those who live in Thailand, Indonesia, Malaysia, Hong Kong, Vietnam, Singapore, China, or India. The following providers offer SIM cards that are either shipped to your home or that can be collected at your airport of departure.

These SIM cards are sometimes cheaper than the local SIM cards.  A disadvantage is that nobody can assist you with the activation or the settings on your phone.  In the unlikely event that you would encounter problems, you will need to rely on phone or e-mail support.

Pick-up	Duration	Data	Voice + Text	Total cost (click for more information and to buy)	Additional info
Bangkok	8 days	Unlimited with fair usage policy	No	KRW 13,600	Multi-size SIM by AIS Fair usage policy after 3GB, speed drops to 128kbps Pick up at Klook counter at Bangkok airport or Siam center
Bangkok	10 days	Unlimited with fair usage policy	No	KRW 11,600	Nano SIM (by DTAC) Fair usage policy after 5GB, speed drops to 128kbps Pick up at Klook counter at Bangkok airport or Siam center
Bangkok	15 days	Unlimited with fair usage policy	No	KRW 33,000	Multi-size SIM by AIS Fair usage policy after 3GB, speed drops to 128kbps Pick up at Klook counter at Bangkok airport or Siam center
Kuala Lumpur, Penang & Sabah	7 days	4GB	No	KRW 16,500	Multi-size SIM offered by Tune Talk Top-up is possible. 2G phones and below are not supported. The SIM card can be collected at the airports of PEN, Kuala Lumpur or Kota Kinabalu
Kuala Lumpur, Singapore, West & East Malaysia	7 days	4GB	No	KRW 16,500	Multi-size SIM offered by Tune Talk Top-up is possible. 2G phones and below are not supported. The SIM card is mailed to your home.
Kuala Lumpur, Singapore, West & East Malaysia	8 days	Unlimited with fair usage policy	No	KRW 17,000	Multi-size SIM. 4GB of high-speed data (6GB if activated before 31 Jan 2020) The SIM card is mailed to your home.
Kuala Lumpur	8 days	Unlimited with fair usage policy	Yes	KRW 18,500	Multi-size SIM from Hello1010 3GB of high-speed data, speed is capped to 3G afterward MYR 20 credits preloaded towards calls Pick-up at the office in Ara Damansara
West Malaysia	8 days	Unlimited with fair usage policy	Yes	KRW 15,800	Multi-size SIM from joytel2u 3GB of high-speed data, speed is capped to 3G afterward MYR 20 credits preloaded towards calls Delivered to any address in West Malaysia
East & West Malaysia	5-15 days	Unlimited with fair usage policy	No	KRW 15,800 - KRW 33,700	Multi-size SIM from joytel2u Delivered to any address in West or East Malaysia
Kuala Lumpur, East & West Malaysia	20 days	5GB	Yes	KRW 17,000	Multi-size SIM Connects to the KT network You can use this SIM to make calls but they will be deducted from your data plan. Delivered to any address in West or East Malaysia and Kuala Lumpur
Singapore	7 days	2,5 GB	Yes	KRW 12,900	Multi-size SIM from Xplori You can use this SIM to make calls but they will be deducted from your data plan. Delivered to any address in Singapore
Singapore	20 days	5 GB	Yes	KRW 22,900	Multi-size SIM from Xplori You can use this SIM to make calls but they will be deducted from your data plan. Delivered to any address in Singapore
India	8 days	Unlimited with fair usage policy	No	KRW 13,100	Multi-size SIM from star roam 6GB of high-speed data, speed is capped to 3G afterward You will need to send across a scanned copy of your passport and visa. Delivered to the whole of India. Allow 1-2 business days for delivery in major cities. 3-4 business days for delivery
India	15 days	Unlimited with fair usage policy	No	KRW 32,600	Multi-size SIM from star roam 6GB of high-speed data, speed is capped to 3G afterward You will need to send across a scanned copy of your passport and visa. Delivered to the whole of India. Allow 1-2 business days for delivery in major cities. 3-4 business days for delivery
Hong Kong	6 days	2.8 GB	No	KRW 13,200	Multi-size SIM Pick up at Hong Kong International Airport
Hong Kong	8 days	5 GB	No	KRW 26,300	Multi-size SIM Pick up at Hong Kong International Airport
Hong Kong, China, Taiwan, Macau	3 - 5 - 7 - 14 days	Unlimited with fair usage policy	No	KRW 4,700 - KRW 20,600	Multi-size SIM, connects to SK telecom network 3 or 5 days : 3GB of high-speed data, speed reduced to 256 Kbps afterward. 7 or 14 days : 3 GB or 5 GB of high-speed data, speed reduced to 256 Kbps afterward. Delivered to any address in Hong Kong, China (except Xinjiang & Tibet), Taiwan and Macau.
Indonesia	5 - 7 - 8 - 10 days	Unlimited with fair usage policy	No	KRW 14,000 - KRW 23,400	Multi-size SIM by JavaMifi Fair usage policy: 500MB/day high-speed 4G data + unlimited 2G data (256kbps) Pick up at Soekarno–Hatta International T2 & T3, Adisutjipto Airport, Husein Sastranegara International Airport, Juanda International Airport, Ngurah Rai International Airport
Indonesia	5 - 7 - 8 - 10 days	Unlimited with fair usage policy	No	KRW 14,700 - KRW 27,500	Multi-size SIM Fair usage policy: we could not find the details about this policy Delivery to any address in Jakarta, Bali, Yogyakarta, Bandung, Surabaya, and Medan
Vietnam	5 days	Unlimited with fair usage policy	No	KRW 12,600	Multi-size SIM that connects to the SK telecom network Fair usage policy: 500MB/day high-speed 4G data daily + unlimited data at 3G Delivery to any address in Hanoi, Halong Bay & Ho Chi Minh
Vietnam	7 days	2,5 GB	Yes	KRW 11,100	Multi-size SIM by Xplori You can use this SIM to make calls but they will be deducted from your data plan. Delivery to any address in Vietnam
Vietnam	20 days	5 GB	Yes	KRW 18,600	Multi-size SIM by Xplori You can use this SIM to make calls but they will be deducted from your data plan. Delivery to any address in Vietnam

Buying a SIM card in Korea

Your options are limited if you’re already in South Korea when you’re reading this but it is still possible to get a local SIM. 

You will either need to head back to an airport or you can visit the KT center near Hongik University Station in Seoul.

At the airport

It’s a bit unfortunate, but unless you’re still in Seoul, the only way to buy a SIM is to go back to the airport. You can buy your SIM there but in most cases, pre-ordering using one of the links above will be cheaper.

In Seoul

To be honest, we were surprised by how few options there are to get a SIM card as a foreigner.  Except for the airports the only place you can go to is the KT Center in downtown Seoul near the Hongik University Station.

The office is about a 3 minutes walk from the subway station (take exit 5).  It’s open daily from 9 AM until 6 PM.

This is the address: Link Korea, 2F, Floren B/D, 176-8 Donggyo-dong, Mapo-gu, Seoul, Korea

You can head to the office and buy your SIM card on the spot or you can pre-order it online which will grant you a small discount.

Conclusion

We used one of the KT Olleh SIM’s in Korea and it turned out to be invaluable. We used Naver maps during our road trip as well as many other local apps.  The connection was always stable and very fast.

Previously, when there were no tourist SIM cards, we managed to discover a country without them, but since the introduction of these SIM’s it has become much easier to discover off-the-beaten-path locations.  It helps to travel deeper and get a better, less touristy experience of South Korea.

All information is accurate at the time of writing (December 2019).

We will regularly update this article but if you notice any changes we would appreciate it if you let us know so we can update our post.

Enjoy South Korea!