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A Thailand eSIM is a prepaid data plan that connects your phone to local Thailand networks the moment you land — a digital SIM you install before you fly, with no queues, no SIM swap and no roaming fees.
A Thailand eSIM is a data-only plan that loads onto your phone before you fly and switches on the moment you land. Touching down at Bangkok's Suvarnabhumi Airport? Skip the SIM kiosks and step out already online. The plan connects you to Thailand's AIS network, with 5G in the cities and 4G almost everywhere else, so you can pull up maps, message home, call a ride and check your booking long before your luggage reaches the carousel. No roaming fees, no swapping a physical SIM, no hunting for airport Wi-Fi. Just data the second you arrive.
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Choose a data plan for Thailand, install the eSIM before your trip, and activate it when you arrive. Your regular SIM can stay in your phone, while the eSIM gives you mobile data for travel apps, messaging, maps and browsing.
Pick a destination and data amount — pay in seconds.
Scan the QR or auto-install in the app — no physical SIM.
Data activates on first connection at your destination.
Important cities in Thailand
Bangkok · City guide
A Bangkok eSIM keeps you oriented while you cross the city from the Grand Palace to Wat Arun and back along the Chao Phraya river boats. Use mobile data to time the next pier stop, translate a menu in the night markets, and pull up reviews before you commit to a plate of street food. Staying connected means you can wander the busy lanes and still find your way back without ever losing signal in the city centre.
Bangkok eSIM — online before you land →Chiang Mai · City guide
A data plan for Chiang Mai helps you trace a route through the old-city temples on foot and check what is open as you go. On Sundays, mobile data lets you split off and regroup with friends along the busy walking-street market, then look up a quiet spot to rest. When you head out toward the surrounding hills, keeping data on means you can share your location and pull up directions even as the streets thin out and the scenery opens up.
Chiang Mai eSIM — online before you land →Phuket · City guide
A Phuket eSIM keeps you posted on tide and weather as you move between the Andaman Sea beaches, then powers your way through Patong's nightlife after dark. Booking a boat trip to the Phi Phi islands? Use mobile data to confirm the meeting point and message the group before you board. Coverage is strong across the main island, though it can dip on the open water and in remote bays, so download your maps before you set off.
Phuket eSIM — online before you land →Krabi · City guide
A data plan for Krabi lets you plan a day under the Railay limestone cliffs and find the right longtail boat back to the Ao Nang beaches. Use mobile data to compare island-hopping boats, check departure times and let your group know where to meet. Signal holds up well along the developed shore, but it can fade on the boats and around quieter bays, so it pays to save your route offline before you climb aboard and head out for the day.
Krabi eSIM — online before you land →Why Horizon
An eSIM lets you skip costly roaming and land already connected, with data working from the moment you arrive instead of queuing for a local SIM. Whether you're visiting family or seeing Thailand for the first time, you stay reachable without changing anything in your phone.
From 1 GB for a quick trip to unlimited for the long haul — pick exactly what you need.
Install in a couple of taps before you go, then it activates automatically when you arrive.
Know exactly what you'll pay up front. No surprise bills, no hidden fees when you land.
Add new destinations and top up on the same eSIM — no new install for your next trip.
We'll alert you as you approach your limit, so you can top up before you drop offline.
Single-country, Europe-wide, or worldwide coverage — connect across borders and beyond.
The Thailand eSIM connects to AIS, one of the country's main carriers. You get 5G coverage in Bangkok and the larger cities, and 4G across most other areas. Your phone picks the best available signal automatically, so you stay connected without changing any settings.
On the main islands like Phuket and Koh Samui, and around the developed shore near Krabi, coverage is strong. On the boats between islands, on open water and in remote bays, the signal can drop in and out. Download your maps and booking details before you board so you are not caught offline mid-trip.
This is a Thailand-only plan, so it works within Thailand. If your trip spans several countries in Southeast Asia, a single-country plan won't follow you across borders. For a multi-country route, choose a regional eSIM that covers the whole area instead.
Yes. With live data you can map the BTS Skytrain, time the next river boat along the Chao Phraya, and show a tuk-tuk driver exactly where you're headed. Coverage is strongest in the city centre, which is where most of this getting-around happens.
Install the eSIM while you still have Wi-Fi at home, a day or two before you fly. The profile loads then but only starts using data once you land. That way it activates automatically as you reach the terminal at Bangkok's Suvarnabhumi Airport, with no setup needed on arrival.
Yes. The eSIM is a separate data line, so your usual number stays active for calls and texts over Wi-Fi or its own roaming, while the eSIM handles your data. Most phones also let you share that data as a hotspot, so a travelling companion or your laptop can get online too.