Internet in Thailand: from Bangkok airport to the island ferry

Most flights from Kazakhstan land at Bangkok Suvarnabhumi, while low-cost carriers often use Don Mueang. After a long flight, the last thing you want is to queue at a mobile operator counter and compare tariffs. With an eSIM that step disappears: you install the profile at home by QR code or with the Quick install button, and after landing you only need to turn on data roaming for the eSIM line.

Your home SIM can stay in the phone and keep receiving calls and SMS, including bank codes. Mobile data runs through the eSIM, so you can message your family, open your hotel booking and order a ride right away.

In Bangkok and Pattaya most tourists get around with Grab and Bolt: the fare is shown upfront, there is no haggling, and the driver sees the exact pin on the map. That matters, because many taxi drivers do not read Latin script and soi (side street) names are easy to mix up. The apps need a stable mobile connection both when you book and while the car is crawling through traffic towards you.

Other services come in handy in the city too: maps for BTS and MRT transfers, a camera translator for menus and signs, food delivery to your hotel. All of this runs on ordinary mobile data, with no need for mall or cafe Wi-Fi that often asks you to register with a phone number.

The Andaman coast means ferries and longtail boats. Near the shore and on the larger islands there is usually mobile coverage, but out at sea between islands the signal can drop, and on remote beaches and in secluded bays it gets weak. So sort out the important things while you are still in an area with a strong signal.

The Gulf of Thailand islands run on their own calendar. While Phuket's rainy season falls roughly between May and October, Samui gets its wettest months towards the end of the year. That is why many travelers choose the Gulf in summer and the Andaman Sea in winter. When planning your route, remember that ferries can be rescheduled in bad weather, and the easiest way to hear about cancellations is through messengers and the operators' apps.

On Koh Phangan during the Full Moon Party, thousands of people gather on Haad Rin beach at once, and the mobile network in such a crowd can slow down noticeably. Agree on a meeting point with friends in advance and share your location while the connection is still fast.

If you mostly chat, use maps and book rides, a few gigabytes per week is enough. Stories and videos from the trip, video calls home and evening series in your room multiply that several times over. Families are a separate case: when one phone shares its connection with a child's tablet and a second smartphone, data runs out faster than you expect.

Most plans support hotspot, but check this on the plan page. For a long trip across several islands, consider an unlimited plan with a fair-use speed cap. If your data runs out before the holiday does, you can buy an extra package without replacing the eSIM.