Where to Buy a Tourist SIM in Thailand? Prices, Carriers and How to Buy

Traveling independently in Thailand has never been easier, but for a smooth trip, the first thing you need to sort out is a reliable mobile connection. A Thailand tourist SIM is both a dependable and budget-friendly way to stay online: you can use Google Maps to get around, scroll Facebook and video-call family on Zalo without worrying about expensive roaming charges. Today, the two most popular options are a traditional physical SIM and an eSIM (installed via QR code).

This guide covers where to buy a Thailand tourist SIM, which type to choose, reference prices, which carrier suits you, how to activate it and a few practical tips for using a SIM in Thailand. If you are still torn between an eSIM and international roaming, check out our eSIM vs roaming comparison.

👉 Want to be online the moment you land in Thailand? See the latest plans and prices on our Thailand eSIM page.

What Types of Tourist SIM Are Available in Thailand?

There are two types of tourist SIM in Thailand: physical SIMs and eSIMs. Both connect to the country's major carriers (AIS, True Move H / DTAC), and signal quality and speeds are generally similar. The main differences lie in how you buy and install them, plus a few extra features.

1. Traditional physical SIM

This is the familiar plastic SIM card. You can buy one at a SIM counter at the airport, at a carrier's official store or at a convenience store in Thailand; the staff will insert the SIM into your phone and activate it for you on the spot.

• Pros: works with every type of phone and requires no complicated setup.
• Cons: you have to remove your Vietnamese SIM to insert the Thai one, which means you temporarily can't receive bank OTP messages or calls to your Vietnamese number.

2. eSIM

An eSIM is a digital SIM – a newer connectivity solution that is becoming increasingly popular thanks to its convenience. You buy it online, receive a QR code by email, and simply scan the code with your phone to install the eSIM, with no card swapping required.

• Pros: lets you use it alongside your Vietnamese SIM (dual SIM). You get data in Thailand while keeping your Vietnamese SIM active for calls, texts and bank OTPs. Apps like Zalo, Viber and Facebook keep the same accounts and work as usual.
• Cons: eSIMs only work on compatible devices such as iPhone XS and later, Samsung Galaxy S20 and later, Google Pixel 3a and later…

📌 If your phone supports eSIM, go with an eSIM. You'll skip the queues at the airport and stay in touch with your loved ones back home the whole time.

→ Learn more: What is an eSIM?

→ Quickly check whether your phone supports eSIM: latest list of eSIM-compatible devices.

How Much Does a Thailand Tourist SIM Cost?

The price of a Thailand SIM or eSIM depends on the length of your trip and the amount of data you need. Overall, it's quite cheap compared with the total cost of a tour or your flights.

Below are the most popular options on the market today. Prices from carriers and other providers are for reference only and may change depending on the time and current promotions.

1. TouriESIM Thailand eSIM

The TouriESIM Thailand eSIM is a data-only travel eSIM that connects to mobile networks in Thailand at 4G/5G speeds, depending on the plan. You can choose a daily plan, a total-data plan or an unlimited plan to suit your needs. The carrier used, a Thai phone number, call minutes and hotspot support all vary by plan – see the destination page for details.

👉 See plan details and the latest prices on our Thailand eSIM page.

2. Physical SIM at Thai airports

If you buy after you arrive, you'll find carrier counters in the arrivals hall. The prices carriers list for tourists usually range from 299 to 499 baht (about 210,000–350,000 VND) for a 7–10-day package. Reference prices at Suvarnabhumi (BKK) and Don Mueang (DMK) are as follows (reference prices, subject to change):

Note: Buying at the airport is usually more expensive than buying in advance in Vietnam, and you'll need Thai baht in cash or a credit card to pay.

3. SkySim eSIM (via Viettel Money)

Viettel also sells Thailand travel eSIMs through its Viettel Money app (under the SkySim brand), using the True network in Thailand.

These plans are data-only, with no Thai phone number and no call minutes. Popular plans are priced as shown below (reference prices, subject to change):

Quick cost summary for a 10-day trip to Thailand

To give you a clearer picture, here's a comparison of internet options for a typical 10-day trip to Thailand (reference prices, subject to change):

Where Is the Most Convenient Place to Buy a Thailand Tourist SIM?

Choosing the right place to buy your Thai SIM saves time and puts you in control from the very start of your trip. Depending on the type of SIM and how much time you have to prepare, you can pick one of the following four options.

1. Buy an eSIM online before you travel (fastest and most flexible)

This is currently the quickest and most convenient option. Just go to the TouriESIM Thailand eSIM page, choose a plan, pay and receive your QR code by email after payment. You can install it at home or at the airport before your flight (the QR code can be scanned within 30 days of purchase). As soon as you land in Bangkok, turn off airplane mode and your phone can connect to a Thai network so you can book a ride to your hotel. No passport, no queues, and customer support is available in Vietnamese.

2. Buy a SIM at a Thai airport (physical SIM)

If you prefer a physical SIM, this is the most popular choice because it's convenient and staff can help you right away. All major airports in Thailand have official SIM counters:

• Suvarnabhumi Airport (BKK): AIS and True Move H counters on level 2, arrivals hall. Open 24/7, with staff inserting and activating your SIM on the spot.
• Don Mueang Airport (DMK): True Shop near exits 3 and 5 in the international arrivals hall. Open from 5:00 to 23:59. If you arrive after midnight, keep in mind the counter may already be closed.
• Phuket Airport (HKT): Counters in the international arrivals hall, level 1, in the baggage claim area. Open from 6:00 to 23:00.

When buying a physical SIM, you'll need to show your passport and may be asked to have your photo taken. During the late-afternoon and evening rush (when many flights from Vietnam land), you may have to queue for 15–30 minutes. If you're traveling in a group, send one person to queue for the SIMs while the others collect the luggage to save time.

3. Buy at 7-Eleven or a carrier store

With more than 14,000 7-Eleven stores across every province in Thailand, you can pick up a prepaid SIM there for slightly less than at the airport. You can also buy a SIM at official AIS or True Move H stores in major shopping malls such as CentralWorld, Siam Paragon or Terminal 21.

SIMs here are usually cheaper than at the airport, but you'll need your passport to register. Bear in mind that staff at smaller shops may not speak English, so it helps to have a screenshot of the package you want to buy.

4. Order a physical SIM for home delivery in Vietnam

You can buy a Thailand tourist SIM on e-commerce platforms such as Shopee or Lazada and have it delivered to your home before your trip. This gives you peace of mind because you have the SIM before you leave, but choose reputable sellers to avoid SIMs that are close to expiry or faulty SIMs that can't be exchanged once you're abroad.

Which Carrier Is Best for Tourists?

Thailand currently has two major carriers serving tourists: AIS and True Corp.

• AIS: The carrier with the highest revenue in Thailand. AIS's main strength is its very wide coverage. If your itinerary takes you deep into the countryside, trekking in the northern mountains (such as Pai or Mae Hong Son) or out to remote islands (such as Koh Lipe), AIS signal tends to be slightly better and more stable.
• True Corp (the merger of True Move H and DTAC): Currently the second-largest carrier in Thailand. Since DTAC merged into True, its network capacity has become very strong. If you're visiting popular destinations like Bangkok, Pattaya, Chiang Mai or Phuket, True offers a great experience. According to many reviews, real-world speeds typically reach around 15–17 Mbps – enough for high-quality video streaming or video calls without lag.

For most travelers sticking to Bangkok, the southern beaches and Chiang Mai, both carriers perform equally well. The difference only becomes noticeable in areas far from the main centers.

💡 Note: If older reviews mention the “DTAC” network, that brand has now been merged with True. Whether your SIM carries the DTAC or True logo, it runs on the same network in Thailand.

👉 If you want to dig deeper into individual package prices and coverage maps, check the official AIS and True websites.

How to Activate Your Thailand SIM/eSIM

1. Installing and activating an eSIM (set up in advance in Vietnam)

After payment, you'll receive an email with a QR code and instructions. The basic steps are as follows (see our eSIM installation guide for details):

• Go to Settings → Mobile/Cellular → Add Mobile Plan / Add eSIM (on iPhone), or SIM Manager / Network & Internet → Add eSIM (on Android).
• Scan the QR code in the email and complete the setup.
• Turn on Data Roaming for the newly installed eSIM.

It's best to install the eSIM before your flight but not switch it on straight away. For most plans, the validity period only starts when the eSIM first connects to a Thai network (depending on the plan – see when does my data plan start).

💡 Quick tips:

• After installing, give the eSIM an easy-to-remember name (for example “Thailand”) so you can tell it apart from your main SIM.
• Set the eSIM as your mobile data line, and keep your main SIM for regular calls and texts so you stay reachable. See also: using an eSIM and your main SIM at the same time.

2. Installing a physical SIM

If you buy at the airport, the staff will insert and activate the SIM for you. If you do it yourself, just insert the SIM, turn on mobile data and wait a few seconds. If it doesn't connect automatically, simply restart your phone.

→ See our eSIM activation guide for the smoothest possible connection when you arrive in Thailand.

Tips for Using a Tourist SIM in Thailand

Once activated, you're free to use maps, book rides, browse social media and make video calls. The tips below will help you get the most out of your SIM.

1. Check your remaining data: dial *900# on True Move H or *121# on AIS and the system will show how many GB you have left. With an eSIM, you can also see how much data you've used under Settings → Mobile/Cellular on your phone.
2. Running out of data early: on a capped plan, once you've used your allowance, speeds usually drop to around 384 Kbps – still enough for Zalo messages and reading the news, but not for watching videos or making video calls. At that point, you can buy a top-up at 7-Eleven, through the carrier's app, or simply buy another eSIM.
3. Calling Vietnam: dial +84 followed by the phone number without the leading 0. For example, for 0912 xxx xxx, dial +84 912 xxx xxx. If your plan includes free minutes, local calls within Thailand won't cost anything. International calls to Vietnam may be charged depending on the plan.
4. Sharing Wi-Fi with other devices: most tourist SIMs and eSIMs support hotspot sharing (depending on the plan). It's very handy if you need to use a laptop or share data with travel companions. See also: Can an eSIM share a Wi-Fi hotspot?
5. Free Wi-Fi in Thailand: airports, BTS/MRT stations, 7-Eleven stores and major shopping malls all offer free Wi-Fi. However, speeds are often unstable and connections drop frequently, so don't rely entirely on public Wi-Fi.

Frequently Asked Questions

How long does a Thailand tourist SIM last?

It depends on the plan you choose; common validity periods are 5, 7, 8, 10, 15 or 30 days. For most plans, the clock starts when the SIM first connects to a Thai network, not when you buy it. If you're staying longer, you can top up (physical SIM) or buy a new eSIM.

Can I keep using Zalo with a Thailand eSIM?

Yes. With an eSIM, your Vietnamese SIM stays in your phone, so Zalo works as usual over the data connection from your Thailand eSIM. You don't need to log in again or worry about losing messages.

Do I need a passport to buy a tourist SIM in Thailand?

If you buy a physical SIM at the airport or a store in Thailand, yes – it's required by Thai government regulations. The staff will take a photo of your passport and activate the SIM for you. When you buy a travel eSIM online from TouriESIM, you don't need to show your passport.

Can a Thai SIM be used as a hotspot?

Yes. Most tourist SIMs and eSIMs support Wi-Fi hotspot sharing (depending on the plan). You can share your connection with a laptop, tablet or a travel companion's phone without buying another SIM.

Where can I buy a Thai SIM in Ho Chi Minh City?

You can buy one on e-commerce platforms or from travel SIM resellers. However, if your phone supports eSIM, buying a Thailand eSIM from TouriESIM is the most convenient option, since you don't have to find a shop – you can receive your eSIM by email wherever you are.

We hope this guide has given you everything you need to prepare confidently for your upcoming trip to Thailand. If your phone supports eSIM, don't hesitate to try this convenient solution with TouriESIM for a seamless, always-connected journey! Have a wonderful time in Thailand!

👉 Ready for your trip to Thailand? Pick the right eSIM plan on our Thailand eSIM page, or browse other destinations if you're combining several countries in one trip.