Is the internet signal good in French Guiana?

In major towns such as the capital, Cayenne, and Kourou, the Orange and SFR 4G/LTE networks work reliably. Overall coverage is about 70%: the coast and town centres are fairly good, but deep in the Amazon jungle of the interior coverage can be patchy or absent. Before exploring the jungle, we recommend saving maps and the information you need offline in advance.

How do I book a visit to the Kourou space launch centre?

Visits to the Kourou space centre (CSG) must be booked in advance through the official website. Bookings can fill up months ahead, so it is best to apply before departure Korea. When you connect to the internet locally with a Yeohaengyusim eSIM, you can check your booking confirmation email and visitor information straight away.

Which countries' passports can be used to enter French Guiana?

Because French Guiana is an overseas territory of France (DOM), it is one of the EU countries. Korean passport holders can stay for up to 90 days without a visa. However, a yellow fever vaccination certificate may be required on entry, so be sure to get vaccinated before departure and bring your International Certificate of Vaccination (yellow card).

How do I get from Korea to French Guiana?

There are no direct flights to French Guiana. The usual route is via Paris (Charles de Gaulle Airport) or Martinique, arriving at Félix Eboué International Airport in Cayenne. Via Paris, the total journey takes more than 24 hours. With transfer times this long, installing a Yeohaengyusim eSIM in advance means you can use it conveniently both at your stopover and after you arrive.

What currency and language are used in French Guiana?

As an overseas territory of France, it uses the euro (EUR) as its official currency. The official language is French, and English is not widely understood except at some tourist sites. It pays to make full use of translation apps, and using a live translation service locally with a Yeohaengyusim eSIM makes communicating much easier.

Does eSIM work in French Guiana?

French Guiana supports eSIM, and plans start from ₩2,848. 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 French Guiana?

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 French Guiana eSIM use?

In French Guiana it connects automatically to local carrier networks such as Orange · SFR · Digicel (4G/LTE, 5G where supported). Population coverage is about 70%. 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 French Guiana?

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 French Guiana 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 French Guiana?

Yes. In French Guiana 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.

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 French Guiana. Just remember "set up before you leave, switch on when you arrive" and you can use the internet as soon as you land.

French Guiana eSIM plans

Instant delivery

A travel eSIM for French Guiana starts from ₩2,848 and works as soon as you buy it. In French Guiana it connects automatically to local networks such as Orange · SFR · Digicel (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

French Guiana eSIM at a glance

Price: From ₩2,848
Local networks: Orange · SFR · Digicel
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 French Guiana

Data	Validity	Price
Unlimited	1 day	₩2,848
Unlimited	3 days	₩13,546
Unlimited	5 days	₩24,094
Unlimited	7 days	₩34,641
Unlimited	10 days	₩45,189
Unlimited	15 days	₩61,764
Unlimited	30 days	₩93,407
1 GB	7 days	₩4,505
2 GB	15 days	₩8,272
3 GB	30 days	₩12,039
5 GB	30 days	₩18,067
10 GB	30 days	₩27,107
20 GB	30 days	₩45,189
50 GB	30 days	₩54,230

French Guiana is an overseas territory of France in the north-east of the South American continent. The vast Amazon rainforest covers more than 90% of its territory, and it is home to the Kourou space launch centre of the European Space Agency (ESA), which gives it a unique appeal. It is still an unfamiliar destination for Koreans, but for travellers who want a real adventure in the great outdoors, it is a hidden wonder we highly recommend. From Cayenne's Creole culture and colourful markets to the Îles du Salut, known as Devil's Island, and jungle treks where jaguars and many kinds of birds live, it is overflowing with sights and experiences. The more remote the trip, the more essential a stable internet connection is. If you get ready with a Yeohaengyusim eSIM before departure, you can enjoy your trip with much more confidence once you are there.

Flight time from Korea

About 24 hours or more (via Paris or elsewhere, no direct flights)

Time difference

12 hours behind Korea (KST -12, UTC-3)

Best season to go

August–November (dry season, good for jungle exploring)

Plug type

Type C/D/E (no adapter needed for Korean plugs)

Why you really need an eSIM in French Guiana

As French Guiana is a remote destination surrounded by Amazon jungle, even getting hold of a local SIM is not easy. SIMs are sold only in some shops in the capital, Cayenne, and English is not widely spoken, so if you do not know French, activating a SIM can feel quite complicated. With a Yeohaengyusim eSIM, you can install it in Korea before departure and use data the moment you arrive. It is also useful when you need a map or translation app while trekking in the jungle, or when you have to check your booking to visit the Kourou space centre while you are there. It supports 4G/LTE speeds through the networks of the local carriers Orange and SFR, and you can enjoy a stable connection in town centres and at major sights. However, coverage may be limited in remote stretches deep in the Amazon interior, so we recommend saving offline maps beforehand. Another big advantage is that you can use your Korean number and local data at the same time on one smartphone, with no SIM chip swap.

Network coverage in French Guiana

Carrier

Orange

+ SFR

Network

4G/LTE

Coverage

70%

How do I install a French Guiana eSIM?

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

1
Buy a plan
Choose a data plan for French Guiana 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 French Guiana, 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 French Guiana 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 ₩2,848	₩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

French Guiana eSIM FAQ

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