Which is the best eSIM for Thailand? If you're asking yourself this question, you've come to the right place. (And, spoiler alert: the answer is: Yes.)

Thailand is among the countries with the highest internet usage worldwide, boasting some of the fastest internet connections and excellent connectivity for its citizens. Whether for navigation, sharing content on social media, or simply to be able to connect in an emergency, a reliable and stable mobile connection is essential in Thailand.

The good news? I'm happy to help you with this, whether you order an eSIM before your trip or buy a physical SIM card upon arrival in Bangkok. The even better news? It only takes a few minutes to read everything.

How Thai eSIMs have changed the discussion

A few years ago, the question "Should I get a SIM card in Thailand?" had a completely different meaning. Since a Thai SIM card could practically only be purchased upon arrival at Suvarnabhumi Airport, many travelers shied away from the idea: withdrawing cash from an ATM, queuing, waiting, wondering how fast the internet would be, and whether the SIM card would even work with their mobile phone.

Of course, there are many other options – and traveling in Thailand without a SIM card is generally not one of them. For most travelers, a Thai eSIM is the best option, as it ensures you're online immediately upon landing in Thailand. This is especially advantageous if you already know how to obtain an eSIM and don't need to familiarize yourself with the process.

Strategies for staying connected in Thailand

Buy a Thailand eSIM from Ubigi

The easiest way to get a SIM card for Thailand is to download an eSIM before your trip. Whether you choose Ubigi as your eSIM provider in Thailand or not, the process is the same. After completing your order, you'll download a code to your phone, which you can use to connect to local networks upon arrival in Thailand. As with traditional SIM cards, the price of eSIMs depends on the duration of your subscription and your data needs.

Buy a physical Thai SIM card at the airport.

Most mobile phones manufactured after 2020 are eSIM-compatible, but not all. If you don't have a modern phone, it's best to buy a Thai SIM card after arriving at Suvarnabhumi Airport in Bangkok. You can get one from one of the major Thai mobile network operators such as True, AIS, or dtac. The cards are usually marketed as "Thailand Tourism SIM cards" or something similar.

Get a Thai SIM card as soon as you arrive in the city.

If you arrive in Bangkok late at night or simply don't want to wait to buy a SIM card, you can wait until you reach your destination. The most convenient option is usually to visit a 7-Eleven convenience store to purchase one. However, this isn't the only possibility. You can also find SIM cards from all Thai mobile providers at mobile phone shops in shopping malls and on the streets of larger cities.

Use the data plan of your home country.

Does T-Mobile work in Thailand? Yes, provided you have a valid postpaid plan. In fact, most US and foreign SIM cards work in Thailand; it simply depends on how much your provider charges. Alternatively, you can use a global SIM card, for example, from a well-known company like Google (e.g., Google Fi) or another provider.

Getting by with Wi-Fi

If you are strictly against buying a SIM card in Thailand, or if this is not possible for technical reasons, there is good news: the Kingdom boasts one of the fastest internet networks in the world. Wi-Fi is widely available, whether in hotel rooms, shopping malls, restaurants, or even on the street. This strategy is best if you plan to spend most of your time in cities and tourist hotspots.

A note about SIM cards in the far south of Thailand

What I've always loved about traveling in Thailand is that mobile phones seem to work everywhere. Whether dozens of meters underground in Bangkok's MRT, on the highest rooftop terrace of a bar, or in the middle of the ocean on a speedboat, an hour or more from the mainland – you almost always have reception. There is, however, one notable exception, which fortunately can be avoided.

Due to the security situation in Thailand's southernmost provinces of Yala, Narathiwat, and Pattani, some SIM cards are not working. If you are traveling to one of these provinces (which most foreign governments advise against), you will need to contact your mobile provider to re-register your card. Note that from 2024 onwards, neither eSIMs nor the tourist SIM cards available at airports will require this additional step.

More frequently asked questions about the best eSIM for Thailand

Should you get an eSIM in Thailand?

Do I need an eSIM in Thailand? Absolutely! Staying online is essential in Thailand – both for practical reasons like safety and navigation, and because you'll want to securely share your experiences on social media. While Wi-Fi is widespread and fast in Thailand, it's usually not sufficient.

Can I buy a SIM card at the airport in Thailand?

You can easily buy a Thai SIM card at either of Bangkok's airports. Alternatively, you can order an eSIM for Thailand before your trip. This way, you'll be connected to a mobile network immediately after landing in Thailand and activating the eSIM.

Which eSIM is best for tourists in Thailand?

In terms of network coverage, data allowance, and pricing, most SIM cards in Thailand are similar. In my experience, AIS is faster than True, which in turn is faster than dtac, although I can't back this up with data. Keep in mind that with a Thai eSIM, you'll connect to different networks depending on which one offers the strongest signal.

Conclusion

Which eSIM is best for Thailand? As you may have guessed from clicking on this post, the answer is a resounding "Yes!" Whether you choose Ubigi as your eSIM provider in Thailand or purchase a physical SIM card at Bangkok airport, exploring Thailand these days without a constant and reliable mobile network connection is extremely difficult. Fortunately, Thailand offers some of the fastest and most affordable mobile data plans in the world. Need help planning your Thailand trip? I'd be happy to create a personalized itinerary for you!