Does the internet work well inside the Angkor Wat temple complex?

The 4G/LTE signal is fairly stable in central Siem Reap and around the main entrances to Angkor Wat. However, the signal may weaken deep inside the temple complex or in jungle areas. At the main viewing points you can easily check maps and share photos.

Do I really need data to use the Grab app in Cambodia?

Yes. Grab is an app based on real-time location, so a stable data connection is essential. In Cambodia both tuk-tuks and Grab are widely used to get around, and with a Yeohaengyusim eSIM you can travel comfortably by Grab from the airport to your accommodation on arrival.

Besides Phnom Penh and Siem Reap, is there coverage in beach areas such as Sihanoukville?

A 4G/LTE connection is available in central Sihanoukville and along the main beaches. However, overall coverage in Cambodia is about 70%, so coverage can be patchy or absent in remote rural areas or deep in the interior of islands. Around the main tourist spots, you can use it without any problems.

Do I really need a power adapter in Cambodia?

Cambodia uses a mix of Type A, Type C and Type G outlets. A charger you use in Korea (Type C plug) can sometimes go straight into a Type C outlet, but the type of outlet varies from one place to stay to another, so it is safer to bring an adapter. We recommend getting a multi-adapter before departure.

Can I install my Cambodia eSIM before I arrive?

Yes. We recommend installing it in Korea before departure. You install a Yeohaengyusim eSIM by scanning a QR code, and it links up automatically with the local network when you arrive in Cambodia. You don't need to wander around the airport looking for a SIM: you can use the internet as soon as you land.

Does eSIM work in Cambodia?

Cambodia supports eSIM, and plans start from ₩8,724. 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 Cambodia?

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.

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

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 Cambodia 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.

Can I use tethering (hotspot) in Cambodia?

Yes. In Cambodia you can share your eSIM data with other devices such as a laptop or tablet by tethering (hotspot). Shared data also comes out of your plan allowance, so if you tether a lot we recommend choosing a little more data.

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

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.

Does my smartphone support eSIM?

You can use it if your phone supports eSIM. iPhone supports it from the XS and XR onwards; Galaxy phones sold in Korea from the S23, Z Flip4 and Z Fold4 onwards. Dial *#06# in the phone app: if an EID number appears, your phone supports eSIM. If it is SIM-locked, it needs to be unlocked.

Cambodia eSIM plans

Instant delivery

A travel eSIM for Cambodia starts from ₩8,724 and works as soon as you buy it. In Cambodia it connects automatically to local networks such as Smart Axiata · Cellcard · Metfone (4G/LTE, 5G where supported), with population coverage of about 70%. 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

Cambodia eSIM at a glance

Price: From ₩8,724
Local networks: Smart Axiata · Cellcard · Metfone
Network: 4G/LTE
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 Cambodia

Data	Validity	Price
Unlimited	1 day	₩8,724
Unlimited	3 days	₩15,053
Unlimited	5 days	₩25,601
Unlimited	7 days	₩37,655
Unlimited	10 days	₩43,682
Unlimited	15 days	₩60,257
Unlimited	30 days	₩94,914
1 GB	7 days	₩9,026
2 GB	15 days	₩16,560
3 GB	30 days	₩19,573
5 GB	30 days	₩30,121
10 GB	30 days	₩54,230
20 GB	30 days	₩85,873
50 GB	30 days	₩119,023

Home to Angkor Wat, a UNESCO World Heritage Site, Cambodia is one of the most mysterious destinations in Southeast Asia. From the vast temple complex of Siem Reap to the lively centre of Phnom Penh and the emerald sea of Sihanoukville, it is full of charm, letting you enjoy history and nature at the same time within one country. But you don't need to buy an unfamiliar local SIM or pay expensive roaming charges while you travel. With one Yeohaengyusim eSIM, you install it before departure Incheon Airport and connect to the internet right after landing at Siem Reap or Phnom Penh airport. Whether you want to share a moving sunrise photo taken in front of a temple straight away, share your location with a tuk-tuk driver or search for great local restaurants, you need reliable data. If you want to enjoy your trip to Cambodia more conveniently and smartly, be sure to take a Yeohaengyusim eSIM with you.

Flight time from Korea

About 5 hours 30 minutes (Incheon → Siem Reap/Phnom Penh)

Time difference

2 hours behind Korea (UTC+7, KST-2)

Best season to go

November–March (dry season, clear and pleasant)

Plug type

A mix of Type A/C/G (adapter needed)

Why an eSIM really helps for a trip to Cambodia

Cambodia does have SIM shops in its airports, but to buy one yourself as a foreigner you often have to hand over your passport and go through a tedious activation process. Communication in English is not always smooth, which can be confusing too. A Yeohaengyusim eSIM, on the other hand, can be bought and fully installed in Korea in advance, so you can open your map and translation apps on arrival. In Cambodia you will often get around by tuk-tuk (motorbike taxi) or with the Grab app, and a stable data connection is essential for that. The Angkor Wat temple complex is also large, so you need to check your route around it in real time, and at Siem Reap's night market or the Night Market you need the internet to use mobile payment apps too. Based on the Smart Axiata and Cellcard networks, it reliably provides 4G/LTE speeds in Cambodia's major cities and tourist spots. An eSIM that is activated with a single QR code scan, with no need to swap SIM cards or hunt for a SIM pin, is truly the best way to stay connected on a trip to Cambodia.

Network coverage in Cambodia

Carrier

Smart Axiata

+ Cellcard

Network

4G/LTE

Coverage

70%

How do I install a Cambodia eSIM?

1
Buy a plan
Choose a data plan for Cambodia 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 Cambodia, switch data roaming on and you're online.

1
Buy a plan
Choose a data plan for Cambodia 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 Cambodia, 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 Cambodia 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 ₩8,724	₩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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Indonesia

Laos

Malaysia

Philippines

Singapore

Vietnam

China

France

Italy

Japan

Thailand eSIM Vietnam eSIM Help using your eSIM eSIM vs carrier roaming — which is cheaper?How many GB of eSIM data do I need?Best travel eSIM — how to choose

Cambodia eSIM FAQ

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