Data for Bangkok, the islands and the north, installed before you fly. No airport kiosk, no passport registration, no queue — the line switches on when you land.
The Thailand plan covers Thailand only.
The same 10 GB in a package that keeps working past Thailand.
20 other countries share the package with Thailand. A few of them:
What's included, when it starts, and how to get connected.
One form to file before you fly, one train to find on arrival, and one rule about taxis. The rest of the trip is easy.
Every foreign national entering Thailand must submit a Thailand Digital Arrival Card. It is free, it replaced the old paper form in May 2025, and you file it online in the three days before you arrive. Use the official government site; the agencies charging €20–40 to fill it in for you are not required.
Install the onesim eSIM at home over Wi-Fi and leave the line switched off. The package starts the first time it connects to a network in Thailand, so there is no cost to having it ready early.
Have the QR code from your arrival card ready, along with the address of your first night. Queues at Suvarnabhumi run 20 to 60 minutes depending on the bank of arrivals.
At Suvarnabhumi the Airport Rail Link runs from the basement to Phaya Thai for 15–45 baht and meets the BTS Skytrain; in Bangkok traffic it is often twice as fast as a taxi. At Don Mueang the SRT Red Line runs to Bang Sue for the MRT. For taxis, use the public queue and insist on the meter.
Cool and dry in the north and on both coasts. March to May is genuinely extreme heat. The rainy season, roughly June to October, means an hour of heavy rain most afternoons rather than washed-out days — and much lower prices.
Street food, markets and small guesthouses are cash. ATMs charge a fixed foreign-card fee of around 220 baht a withdrawal, so take out more, less often. The 300-baht tourist fee that has been announced repeatedly is still not being collected.
Shoulders and knees covered for everyone, shoes off inside, and no photographs of yourself with your back to a Buddha image. Anyone outside a major temple telling you it is closed today and offering an alternative is running a scam.
Bangkok, Chiang Mai and the main tourist islands are well covered. The gaps are in the national parks, on the smaller islands and on the boat between them — download the map before the ferry, not after.
Destination guides
Bangkok, an island, Angkor, Vietnam, Penang, Singapore and Bali: the classic first trip as it runs now, with the border that closed, the forms that arrived and one data plan.
Destination guides
The digital arrival card you must file before you land, how to get in from either airport for pocket change, and a three-day route that avoids the scams.
Answers about data, coverage and setup for Thailand.
Coverage follows the local networks wherever they reach — cities, transport corridors and most rural areas. Remote mountain and island areas can have weaker signal on any carrier.
No. onesim is installed before you travel, with nothing to register when you land. Turn on the onesim line for mobile data and you are connected.
Installing the eSIM does not start the clock. Your package starts the first time the eSIM connects to a network in a country it covers, even while mobile data is off. Install at home over Wi-Fi and keep the onesim line switched off until you arrive; if your home country is covered too, the package would start the moment the line connects there.
Yes. Your account has one onesim eSIM, and you refill it with any regional package from anywhere in the world — from the website or the app. The new package is added to the eSIM already on your phone; there is nothing to install again.
