Data for Siem Reap, Angkor, Phnom Penh and Kampot, installed before you fly. Cambodia is on the Asia plan with Thailand, Vietnam and Laos, so the whole loop runs on one eSIM. Angkor opens at 5 a.m.; at least the phone will be awake.
The Cambodia plan covers Cambodia only.
What's included, when it starts, and how to get connected.
A classic first trip: start in Bangkok, finish on the Kampot coast, and let the Asia plan cover every leg, the Thai one included. The line below is an illustration, not a map.
1Two days for the Grand Palace, the river boats and the street food, with Thailand’s free digital arrival card filed before you land. The land crossings into Cambodia have been suspended since 2025, and still were in September 2026, so the next leg is a short flight to Siem Reap. File Cambodia’s e-Arrival card first.
eSIM for Thailand
2The new airport is about 50 km out of town, and the official shuttle bus is US$8 (2026). Buy the temple pass on the official site or app — US$37 for one day, US$62 for three days within a week — and give the Bayon and its 216 stone faces a morning of their own.
3About six hours by bus, or a short flight. The Royal Palace and its Silver Pagoda, the art deco Central Market of 1937 and the riverfront at dusk, then a quieter morning at the Tuol Sleng Genocide Museum. Grab and PassApp run here, including from the new Techo airport, 20 km south of the city.
4Four hours south-west by bus: a slow river town with pepper farms in the hills behind it. Kep, along the coast, became a French seaside resort in 1908 and is known now for its crab market, where the pepper is sold beside the catch. Fly home from Phnom Penh.
How the plan fits this route
One package from Bangkok to the coast: Thailand and Cambodia are both on the Asia plan, and so are Vietnam and Laos if the loop grows — the bus from Phnom Penh to Ho Chi Minh City crosses at Bavet. Coverage is strong in the cities and along the main roads, and thins in the countryside, as it does on any SIM.
Guide: Bangkok for the first time
Flying in, you file Cambodia’s e-Arrival card at arrival.gov.kh in the seven days before you land, and it costs nothing. Most visitors also need a 30-day tourist visa: an e-visa applied for at least four days ahead, or a visa on arrival paid in US dollars, with a photo. ASEAN passports are the main exception. Overstaying brings a fine with no upper limit.
Unlike most Khmer temples, Angkor Wat faces west, so at dawn you photograph its outline against the sky, alongside a crowd doing the same. The carvings catch the light in the afternoon. The exception comes at the spring and autumn equinoxes, when, seen from the western causeway, the sun rises straight over the central tower. And a pass for tomorrow, bought after 4:45 p.m., gets you in for tonight’s sunset.
Lara Croft: Tomb Raider filmed at Ta Prohm in 2000, the first major film shot in Cambodia since Lord Jim in 1964, and it has been ‘the Tomb Raider temple’ ever since. The real stars are the giant trees whose roots have prised its galleries apart. Come early, before the tour groups, and the famous doorway is yours for a minute.
Cambodia runs on two currencies. ATMs pay out US dollars and most prices in the cities are in dollars, while change under a dollar comes back in riel, at roughly 4,000 to the dollar. Check the notes you are handed: fake and damaged bills turn up. Many counters show a KHQR code; the central bank’s Bakong Tourists app pays it, and signs visitors up with an email and a passport.
It grows in the foothills near the coast and comes green, black, red or white off the same vine. In the early 1900s it went to France by the ton as poivre d’Indochine; since 2016 the EU has protected the name, so only pepper from Kampot may use it. Buy it at a farm, and taste the red before you choose.
Answers about data, coverage and setup for Cambodia.
Yes. Thailand, Vietnam and Laos are on the Asia plan with Cambodia, so the same allowance carries on, and the phone picks up a partner network a few minutes after a border or a landing. What the plan cannot change: the land crossings with Thailand have been suspended since 2025, and still were in September 2026, so Bangkok is a flight. The bus to Ho Chi Minh City crosses at Bavet.
Around Siem Reap and on the main temple circuits, yes: the package connects through Metfone, and coverage follows the towns and the roads. It is thinner on the long drives to the outlying temples and in the hills, as it is on any SIM. Download the map offline, save your Angkor e-ticket to the phone, and agree a pickup point with your tuk-tuk driver while you still have signal.
It can. Thailand, Singapore and Malaysia are on the Asia plan too, and a package starts the first time the onesim line connects in a country on its list, even with mobile data off. If you want the days to start in Cambodia, keep the line switched off until you land and use the airport Wi-Fi in between. Via Doha or Dubai, the Asia package does not connect at all.
