How to Get Internet and a SIM Card in Thailand 2026

Tourist SIMs in Thailand are registered with your passport. Where to buy one, 8- and 15-day packages, device compatibility, and a checklist are all in this guide.

The most practical way to get internet in Thailand is to buy a tourist SIM card registered with a valid passport; you can buy it at the airport, at a True dtac store, or online. Turkish citizens can enter visa-free and stay up to 60 days. Below you'll find how to get the SIM card, which package to choose, and what to check before you set off.

In short

The tourist SIM is registered with a valid passport; carry your passport in your cabin bag.
A maximum of 3 SIMs per brand can be purchased per person.
Packages last 8 and 15 days; an 8-day package is not enough for a 9-day trip.
The SIM can be bought at the airport, in a store, or online; verify your phone's 5G, 4G, or 3G support.

The essence of the rule: a tourist SIM registered with your passport

In Thailand, you must register your tourist SIM with a valid passport. So don't put your passport in checked luggage—keep it with you in the cabin. Under NBTC rules, a maximum of 3 SIMs per brand can be purchased per person. This limit applies to both True and dtac.

Turkish citizens can enter Thailand visa-free, and the permitted stay is 60 days. For up-to-date entry requirements, see our Thailand country page. Tourist SIM packages last 8 or 15 days; if your stay is longer, check your options on the operator's website.

If your internet needs are limited to maps, messaging, and transport apps, a tourist SIM will be enough. A roaming package from your Turkish operator is also an alternative; check your operator's current rates for cost and coverage.

Where to buy it: airport, store, online

A True-dtac tourist SIM can be purchased in three ways:

At the airport: From the operator's sales point. This is an option for those who need a connection right after landing.
At a True dtac store: Bring your passport with you.
Online: Through the operator's website. Suitable if you want to place an order before departure.

Set aside time for the registration process after your flight, even when tired, and expect possible waiting. After inserting the SIM, check the settings yourself as well.

For the rest of your document and packing preparations, take a look at our What to Know Before Going to Thailand article. For cash and card payments, the Currency and Credit Cards in Thailand guide will be useful.

True-dtac Tourist INFINITE SIM packages

True-dtac offers two duration options under the name Thailand Tourist INFINITE SIM:

8-day package
15-day package

Both packages provide unlimited mobile internet at the highest speed over 5G, 4G, or 3G. The package being unlimited doesn't mean the same speed is guaranteed everywhere; coverage can vary by region and network congestion.

When choosing a duration, look at the number of days in your trip. For a 9-day Phuket, Pattaya, and Bangkok itinerary, the 8-day package is not enough; choose the 15-day package to cover the whole trip. Determine the duration by counting from the day you activate the SIM to your return day.

For package prices and current promotions, check the operator's official page. We don't provide prices in this guide. You may also consider other operators' tourist packages; verify the rules from the operator's current information before purchasing.

Device compatibility and common mistakes

A True-dtac tourist SIM can only be used on devices that support 5G, 4G, or 3G on the designated frequencies. Older or budget models may lack frequency support. Before purchasing, check your phone manufacturer's page for the supported bands.

Common mistakes:

Putting your passport in checked luggage. A passport is required for registration; keep it in your cabin bag.
Having a locked phone. A device with a carrier lock may not accept a foreign SIM. Talk to your operator before departure.
Losing your Turkish SIM. When inserting the Thailand SIM, store your Turkish line in a small box; keep the line with you for SMS verification codes.
Leaving roaming on. Turn off data roaming on your Turkish line while using the Thailand SIM, otherwise unexpected charges may occur.
Relying on only one method. If there's an unexpected disruption at the airport, keep the store or online option as a backup.

eSIM support varies by device and operator; if you want to use it, check the manufacturer's and operator's current rules.

Step by step: how to get a SIM card

Before setting off, verify that your phone is unlocked and supports 5G, 4G, or 3G bands.
Choose a duration: an 8- or 15-day package based on the number of days in your trip.
Choose a purchase method: airport, True dtac store, or online.
Bring your passport. A valid passport is required for registration.
Keep in mind the limit of 3 SIMs per brand per person.
Insert the SIM, restart your phone, and turn on the data connection.
Test the connection by opening a maps or messaging app. If there's a problem, resolve it before leaving the point of purchase.
Turn off data roaming on your Turkish line.

You can check tour options on the Thailand tours page. For example, the Phuket, Pattaya, and Bangkok Pearl of Thailand Routes V3 itinerary lasts 9 days; the 8-day package doesn't cover this duration, so consider the 15-day package.

Checklist before you set off

Before closing your suitcase, review the following items:

Your passport is valid and in your cabin bag.
Your phone is unlocked; 5G, 4G, or 3G band support has been verified.
The package duration is chosen: 8 or 15 days.
The purchase method is decided: airport, store, or online. A backup method has also been considered.
You know the limit of 3 SIMs per brand per person.
Your Turkish line and a SIM ejector tool are with you.
Data roaming on your Turkish line will be turned off.
A charger and a suitable plug adapter are ready.
Offline maps and reservation documents have been downloaded to your phone.
Entry requirements have been checked from our Thailand page.

You can also check our When to Go to Thailand guide to plan your trip according to the season.

Frequently asked questions

Do you need a passport to get a SIM card in Thailand?

Yes, a tourist SIM must be registered with a valid passport. Keep your passport with you during purchase and don't put it in checked luggage.

Where can you buy a tourist SIM in Thailand?

A True-dtac tourist SIM can be purchased at the airport, at a True dtac store, or online through the operator's website. The online option is suitable for those who want to prepare before departure.

How many SIM cards can one person buy?

Under NBTC rules, a maximum of 3 SIMs per brand can be purchased per person. This limit applies to both True and dtac.

How many days do True-dtac tourist SIM packages last?

The Thailand Tourist INFINITE SIM is sold with 8-day and 15-day packages. The packages provide unlimited mobile internet at the highest speed over 5G, 4G, or 3G. Check the operator's current page for pricing.

Does every phone work with a Thailand tourist SIM?

No. A True-dtac tourist SIM can only be used on devices that support 5G, 4G, or 3G on the designated frequencies. Check the supported bands on the manufacturer's page and make sure your device doesn't have a carrier lock.

Can Turkish citizens go to Thailand without a visa?

Yes, Thailand is visa-free for Turkish citizens, and the permitted stay is 60 days. You can check current entry requirements on our Thailand country page.