Does the eSIM get a good signal in Bali?

At Bali's main tourist areas, such as Kuta, Seminyak, Ubud and Sanur, you get a stable 4G/LTE signal. However, coverage can be patchy in the mountains outside Ubud or on remote islands such as the Gili Islands, so we recommend saving offline maps beforehand.

Indonesia has different time zones on different islands. Does that affect using the eSIM?

Indonesia is divided into three time zones: western (Java and Sumatra, UTC+7), central (Bali, Lombok and Sulawesi, UTC+8) and eastern (Papua, UTC+9). The time zone differences do not affect your eSIM data use at all. Whichever island you travel to, you can use the same plan conveniently.

Can I use the eSIM right away at Jakarta airport?

Yes. It links up automatically with the Telkomsel network the moment you arrive at Soekarno–Hatta International Airport (CGK). If you install the eSIM and turn on data before departure, you can use map and transport apps as soon as you walk out of the airport.

Does the eSIM keep working if I travel between several islands in Indonesia?

Telkomsel is the carrier with the widest nationwide coverage in Indonesia. When you travel between the main islands, from Bali to Lombok or from Java to Sumatra, the connection stays up in most cases. However, coverage may be limited on small remote islands or deep in the jungle.

When the Wi-Fi at my accommodation in Indonesia is slow, can I tether with the eSIM?

Yes. Most Yeohaengyusim plans support the hotspot (tethering) feature. When the Wi-Fi at your accommodation is slow or unstable, you can use your smartphone like a router and connect your laptop or tablet too.

Does eSIM work in Indonesia?

Indonesia supports eSIM, and plans start from ₩4,053. Install it with the QR code you receive after buying, then just turn on data roaming after you arrive and you are connected straight away. There is no need to swap your SIM.

Travel eSIM or carrier roaming: which is cheaper for a trip to Indonesia?

For a short trip or light data use, a travel eSIM is usually cheaper. Unlimited roaming from Korean carriers costs about ₩11,000–₩15,000 a day, but with an eSIM you can buy just the days of data you need in advance. For a short trip for one or two people, an eSIM has a big advantage; for a family or very heavy data use, compare carrier unlimited roaming too.

Which carrier network does a Indonesia eSIM use?

In Indonesia it connects automatically to local carrier networks such as Telkomsel · Indosat Ooredoo · XLSmart (XL Axiata + Smartfren) (4G/LTE, 5G where supported). Population coverage is about 80%. It picks the network with the strongest signal automatically, so there is nothing to set up.

Can I keep using my Korean number while travelling in Indonesia?

Yes. The eSIM works as a data-only second line, so your Korean SIM and number stay as they are. Use the Yeohaengyusim eSIM for data only, and keep receiving calls, texts and KakaoTalk on your Korean number.

Can I add to or extend my Indonesia eSIM plan?

Yes. When you use up your data or the plan period ends, you can buy a new plan at any time. Keep using the eSIM profile you already installed; there is no need to install it again, so you carry on without interruption.

Do I set up the eSIM before I leave or after I arrive?

We recommend installing it (registering the QR code) before you leave, while you have Wi-Fi. Data starts when you turn on data roaming after you arrive in Indonesia. Just remember "set up before you leave, switch on when you arrive" and you can use the internet as soon as you land.

How many GB of data do I need for a trip to Indonesia?

For mostly maps and messaging, we recommend about 1 GB a day; to use plenty of social media and photo uploads, about 2 GB a day. If you stream a lot of video or tether a lot, an unlimited plan is better. You can always buy more if you run short, so it is fine to choose a little extra at first.

Indonesia eSIM plans

Instant delivery

A travel eSIM for Indonesia starts from ₩4,053 and works as soon as you buy it. In Indonesia it connects automatically to local networks such as Telkomsel · Indosat Ooredoo · XLSmart (XL Axiata + Smartfren) (4G/LTE, 5G where supported), with population coverage of about 80%. Install it with the QR code before you leave and you can use the internet as soon as you land, with no roaming setup.

Sent instantly by email
30-day refund
Customer support in Korean
Credit card · Apple Pay

Indonesia eSIM at a glance

Price: From ₩4,053
Local networks: Telkomsel · Indosat Ooredoo · XLSmart (XL Axiata + Smartfren)
Network: 4G/LTE & 5G
Activation: QR code — install before you leave
Recommended data: Maps and messaging 1 GB a day · more room 2 GB a day · video: unlimited

eSIM plans you can use in Indonesia

Data	Validity	Price
Unlimited	1 day	₩4,053
Unlimited	3 days	₩11,286
Unlimited	5 days	₩18,067
Unlimited	7 days	₩25,601
Unlimited	10 days	₩35,395
Unlimited	15 days	₩52,723
Unlimited	30 days	₩91,900
1 GB	7 days	₩4,505
2 GB	15 days	₩9,026
3 GB	30 days	₩10,533
5 GB	30 days	₩16,560
10 GB	30 days	₩30,121
20 GB	30 days	₩48,203
50 GB	30 days	₩67,791

Indonesia is a tropical country made up of more than 17,000 islands. From the emerald sea of Bali and the green rice terraces of Ubud to the lively cityscape of Jakarta, you can find completely different worlds in one country. As one of the best-known Southeast Asian destinations you can reach by direct flight from Korea, it is visited by hundreds of thousands of Korean travellers every year. But because Indonesia is an island nation, the mobile network differs from region to region, so if you buy a local SIM yourself or use roaming, unexpected inconveniences can easily crop up. If you install a Yeohaengyusim eSIM in advance, you can use maps, translation and social media without a hitch right after landing at the airport. Don't waste your precious travel time in the queue to buy a SIM.

Flight time from Korea

Bali about 7 hours, Jakarta about 6 hours 30 minutes

Time difference

Java -2 hours, Bali, Lombok and Sulawesi -1 hour, Papua same as Korea (relative to KST)

Best season to go

April–October (dry season)

Plug type

Type C/F (Korean plugs can be used)

Why an eSIM really helps in Indonesia

Indonesia has many islands and vast regions, so the local mobile network is more complicated than you might think. You may get a good signal on Kuta Beach in Bali, then suddenly lose the connection when you head to remote areas such as the mountains of Ubud or the Gili Islands. A Yeohaengyusim eSIM uses the network of Telkomsel, a major local carrier in Indonesia, and provides about 80% coverage nationwide. There is no hassle of finding a SIM counter and standing in a long queue after you arrive at the airport, and because you keep your existing Korean SIM as it is and simply add the eSIM, you can keep your Korean phone number too. A stable data connection is essential, especially when you rent a motorbike to get around Bali or book tours through apps. Measured against Indonesian prices, you can use plenty of data at a far more reasonable rate than roaming, and because installation is done with a single QR code before departure, getting ready for your trip is much easier too.

Network coverage in Indonesia

Carrier

Telkomsel

+ Indosat Ooredoo

Network

4G/LTE & 5G

Coverage

80%

How do I install a Indonesia eSIM?

1
Buy a plan
Choose a data plan for Indonesia and complete payment.
2
Scan the QR code
Open the email we sent and point your phone camera at its QR code.
3
Install the eSIM
Complete the eSIM installation as prompted. Doing it before you leave is simplest.
4
Connect on arrival
Once you land in Indonesia, switch data roaming on and you're online.

1
Buy a plan
Choose a data plan for Indonesia and complete payment.
2
Scan the QR code
Open the email we sent and point your phone camera at its QR code.
3
Install the eSIM
Complete the eSIM installation as prompted. Doing it before you leave is simplest.
4
Connect on arrival
Once you land in Indonesia, switch data roaming on and you're online.

Which plan is right for me?

Short trip

For a short 3–7 day trip, an unlimited data plan is ideal.

Business trip

We recommend a high-data plan with plenty for video calls and email.

Long stay

Staying a month or more? A large-data plan gives the best value.

Family trip

Families sharing a connection across multiple devices should pick a tethering-enabled plan with a generous data allowance.

eSIM, local SIM or pocket Wi-Fi: what suits a trip to Indonesia best?

	eSIM	Local SIM	Pocket Wi-Fi
Activation	Instant (QR code)	Buy locally	Pick up / delivery
Setup	2 minutes	SIM swap needed	Separate device
Price	From ₩4,053	₩10,000~50,000	₩5,000~15,000/day
Network	Local 4G/LTE	Local 4G/LTE	Local 4G/LTE
Devices	1 smartphone	1 smartphone	Up to 5
Flexibility	Top up any time	Fixed data	Daily rental
Best for	Ideal for travellers	Long stays	Families / groups

How about these destinations?

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Vietnam

China

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Italy

Japan

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Indonesia eSIM FAQ

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