
Thailand eSIM
Stay connected in Thailand from €2.22. Instant eSIM with 5G data, delivered by QR — no physical SIM and no roaming bills.
Networks in Thailand
Your eSIM connects automatically to AIS at up to 5G speeds, picking depending on your selected plan, device and location.
Thailand data plans
31 plans available · cheapest first, including 16 unlimited.
3 days · 5G · €2.22/GB
Buy now1 days · 5G · First 1GB/day at full speed, then 512kbps
Buy now1 days · 5G · First 2GB/day at full speed, then 2mbps
Buy now3 days · 5G · €1.85/GB
Buy now7 days · 5G · €1.90/GB
Buy now30 days · 5G · €1.97/GB
Buy now3 days · 5G · First 1GB/day at full speed, then 512kbps
Buy now7 days · 5G · €1.73/GB
Buy now15 days · 5G · €1.78/GB
Buy now30 days · 5G · €1.86/GB
Buy now5 days · 5G · First 1GB/day at full speed, then 512kbps
Buy now3 days · 5G · First 2GB/day at full speed, then 2mbps
Buy now7 days · 5G · €1.53/GB
Buy now7 days · 5G · First 1GB/day at full speed, then 512kbps
Buy now15 days · 5G · €1.61/GB
Buy now30 days · 5G · €1.69/GB
Buy now10 days · 5G · First 1GB/day at full speed, then 512kbps
Buy now5 days · 5G · First 2GB/day at full speed, then 2mbps
Buy now15 days · 5G · €1.38/GB
Buy now15 days · 5G · First 1GB/day at full speed, then 512kbps
Buy now30 days · 5G · €1.48/GB
Buy now7 days · 5G · First 2GB/day at full speed, then 2mbps
Buy now20 days · 5G · First 1GB/day at full speed, then 512kbps
Buy now10 days · 5G · First 2GB/day at full speed, then 2mbps
Buy now30 days · 5G · First 1GB/day at full speed, then 512kbps
Buy now15 days · 5G · First 2GB/day at full speed, then 2mbps
Buy now30 days · 5G · €1.29/GB
Buy now20 days · 5G · First 2GB/day at full speed, then 2mbps
Buy now90 days · 5G · €1.50/GB
Buy now30 days · 5G · First 2GB/day at full speed, then 2mbps
Buy now30 days · 5G · €1.17/GB
Buy nowWhy travelers choose Roamsim in Thailand
- Instant delivery — your Thailand eSIM arrives by QR seconds after payment.
- Flat, upfront pricing — no bill shock, no roaming surprises.
- Keep your main number while using local data on a second line.
- 24/7 in-app support from real people, wherever you travel.
Thailand eSIM by plan size
Already know how much data you need? Jump straight to it.
Regional plans that cover Thailand
Visiting more than one country? These regional eSIMs include Thailand and are usually cheaper than buying each destination separately.
eSIM by city in Thailand
Any Thailand plan covers the whole country — these pages cover arriving, coverage and the local quirks city by city.
How to choose an eSIM for Thailand
Which network you'll be on
Thailand's main mobile networks are AIS and True, which merged with dtac in 2023, alongside the state-owned NT. Coverage is good in Bangkok, Chiang Mai and the main resort islands. The networks our Thailand plans use are listed on this page, so you can check before you buy.
Coverage on the islands
Phuket, Koh Samui, Koh Phangan, Koh Tao and Krabi have good coverage in the towns and on the main beaches. Smaller islands, national parks and jungle areas can be weaker or have no signal, as can boat trips between islands. Download offline maps and booking details before you travel to remote spots.
eSIM vs a Thai tourist SIM
Tourist SIMs are sold at Thai airports and need your passport to register. They work well but mean queueing on arrival and swapping out your home SIM. An eSIM installs before you fly, connects when you land, and lets you keep your home SIM in the phone for calls and texts.
How much data a Thailand trip takes
Ride-hailing apps such as Grab and Bolt, maps, translation and messaging are the heavy users. LINE is widely used in Thailand by hotels, tour operators and shops. A two-week trip with daily navigation and social media can use more than you expect, so choose a larger plan if you'll be away from hotel Wi-Fi a lot.
Not sure how much you need? How much data do you need for a trip
Planning the trip? Thailand travel guide: highlights, best time to visit, plugs, money and getting around
Thailand eSIM — FAQ
How do I get an eSIM for Thailand?
Pick a Thailand data plan below, pay by card or crypto, and we deliver your eSIM instantly. Scan the QR code and you're connected in minutes — no physical SIM, no store visit.
Will my phone work with a Thailand eSIM?
Most phones from the last few years support eSIM, including iPhone XS and newer, Google Pixel 3+, and recent Samsung Galaxy S/Z models. Your phone must be carrier-unlocked.
Does the Thailand eSIM include 5G?
Yes — our Thailand plans connect to 5G where the local network supports it, and fall back to 4G/LTE automatically.
Which network will I connect to in Thailand?
Our Thailand plans use partner networks including AIS. Available networks depend on the selected plan, device and location.
Is there a plan that covers Thailand and other countries?
Yes. Asia, Global Lite, Global Max and Global are regional plans that include Thailand, which is usually cheaper than buying each country separately on a multi-stop trip.
Can I keep my own phone number?
Yes. The eSIM runs as a separate data line, so you keep your main number for calls and texts while using Thailand data on the eSIM.
When does my plan start?
Activation rules vary by plan. Check the activation note at checkout before installing your Thailand eSIM; some plans start on connection or first data use, while others have different activation rules.
What is the best eSIM for Thailand?
The best one is the plan with enough data for your trip and validity for all your days there, on a network that covers your islands and towns. For Bangkok and the main islands the major networks work well. Compare the Thailand plans on this page, and if you're also visiting Malaysia or Vietnam, look at a regional plan.
Does a Thailand eSIM work on the islands?
On the main islands, yes: Phuket, Koh Samui, Koh Phangan, Koh Tao and the Krabi area are well covered in the towns and on the main beaches. Smaller islands, national parks and boat crossings can have weak or no signal on any network.
Should I buy a Thailand eSIM before I travel?
Yes. Buy and install it at home over Wi-Fi, keep it switched off, and turn it on when you land. You'll have data at the airport to book a Grab or Bolt ride instead of queueing for a SIM or looking for Wi-Fi.
Ready for Thailand?
Get connected from €2.22 — installed before you land.