eSIM in Thailand: which plan to choose in 2026?

The best eSIM for Thailand, compared for you: price, data, coverage and activation.

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See the plans Updated in août 2026 • 38 plans available

Compare eSIM plans for Thailand: data, duration, prices and operators. Find the best offer and activate it now.

What are the best eSIM plans in Thailand?

Each provider's best plan for this country, with the real price.

Provider	Data	Duration	Price	Price/GB
Saily ★ 4.7 · Review	Unlimited	7 days	$6.02	—	View →
Ubigi ★ 4.4 · Review	20 GB	30 days	$36.10	$1.81	View →
Holafly ★ 4.6 · Review	Unlimited	5 days	$15.04	—	View →
YesSim ★ 4.3 · Review	Unlimited	7 days	$8.02	—	View →
DrimSim ★ 4.1 · Review	5 GB	30 days	$15.70	$3.14	View →
Airalo ★ 3.9 · Review	50 GB	10 days	$9.93	$0.20	View →

Cheap eSIMs in Thailand

A comparison of the cheapest plans, all providers combined.

Provider	Data	Duration	Price	Price/GB
Saily	1 GB	7 days	$3.01	$3.01
Airalo	1 GB	7 days	$4.01	$4.01
Ubigi	500 MB	30 days	$4.01	$8.02
DrimSim	1 GB	7 days	$4.98	$4.98
Airalo	2 GB	15 days	$5.52	$2.76
Airalo	3 GB	30 days	$6.02	$2.01

Guide expert

Choosing the best Thailand eSIM plan is not just about picking the cheapest offer: you also need to consider the network used, the actual validity period, tethering and your itinerary. This guide helps you buy, install and use a suitable eSIM card, from Bangkok to the southern islands and the northern mountains.

How does an eSIM work in Thailand, and is my phone compatible?

An eSIM is a digital SIM card already built into your phone, which you download as a mobile profile. After purchase, the provider generally sends you a QR code, an installation link or a code to enter in its app. Your smartphone then connects to a Thai operator such as AIS, True or dtac, just as it would with a physical SIM, but without opening your phone’s SIM tray.

The key difference from a traditional SIM is flexibility: you can buy and install the plan from France, your hotel or the airport, without queuing in a shop. The eSIM profile remains stored on the device until you delete it. In practice, you install the profile over Wi-Fi before your trip, then activate it when you are ready to use it. Be careful: installation and the start of validity are not always the same thing; rules vary by provider.

For travelers, the main advantage is Dual SIM mode. You keep your French line for important calls and banking SMS, while the Thai eSIM provides mobile data. However, most travel eSIMs are data-only plans: they provide neither a Thai number nor traditional calls. This does not prevent WhatsApp, FaceTime Audio, Signal, Telegram or calls via Google Meet from working as long as you have data.

The iPhone XR, XS and later models, as well as the 2nd- and 3rd-generation iPhone SE, are eSIM-compatible. In Settings > Cellular, look for “Add eSIM”.
On Samsung devices, the Galaxy S20 and later generations, many Galaxy Z Fold/Z Flip models and certain recent Galaxy A models support eSIM. Open Settings > Connections > SIM manager.
The Google Pixel 3 and later are generally compatible, depending on the country and version sold. Check under Settings > Network & internet > SIMs.
Several recent Motorola, Xiaomi, Oppo, Honor and Huawei models also offer eSIM, but compatibility sometimes depends on the exact model: check your device’s technical specifications.
Your phone must be unlocked: a device locked to an operator may not accept a foreign profile. Also dial *#06#; the presence of an EID is a good indicator of eSIM compatibility.
A compatible device does not always mean it can use two active lines in the same way: check the Dual SIM / Dual Standby function if you want to keep your French number active.

Which eSIM should you choose for good 4G/5G coverage in Thailand?

The best eSIM for Thailand is the one that relies on a good local network along your itinerary, not necessarily the one advertising the largest amount of data. The three major names to know are AIS, True and dtac. AIS is often appreciated for its nationwide coverage and routes outside major centers; True is widely available in cities, tourist areas and 5G use cases; dtac remains a common option, particularly through partner offers and following market changes between operators.

In Bangkok, Chiang Mai, Phuket, Pattaya, Krabi, Hua Hin or Koh Samui, 4G is usually very reliable and 5G is widely available in urban areas. For navigation, payments, bookings and social media, the difference between 4G and 5G will often be barely noticeable. Speeds can be very comfortable, but they may drop during peak hours in shopping malls, stations, festivals, certain beaches and heavily visited neighborhoods.

Outside the cities, focus above all on the network partner announced by your provider. In the rice fields of Isan, on northern roads, in national parks, in certain parts of Mae Hong Son or on more remote islands, coverage becomes less consistent. Mountains, jungle, boat crossings and thick concrete buildings reduce the signal. A multi-network eSIM can provide an additional safety margin, but it cannot create coverage where no antenna reaches.

Also be wary of the word unlimited. It may refer to genuinely unlimited usage, or to a full-speed allowance followed by reduced speeds; some plans also restrict tethering. Read the conditions regarding speed, fair use and hotspot access. For most travelers, stable 4G is more valuable than a 5G promise that will only be available intermittently.

Major cities: Bangkok, Chiang Mai, Phuket, PattayaVery reliable 4G coverage and frequent 5G; congestion may slow the network in heavily visited areas.

Beach resorts and tourist islands: Krabi, Koh Samui, Koh Phangan, Koh LantaGenerally smooth connection in villages, hotels and inhabited beach areas; conditions may vary depending on the island and inland areas.

Road routes, small towns and the countryside of Isan or Central Thailand4G is often adequate, with slower areas between towns and on certain secondary roads.

Mountains, jungle, national parks and very remote islandsSignal may be variable or unavailable in places; prepare maps, bookings and essential contacts for offline use.

For a road trip or a stay combining cities and countryside, choose an eSIM using AIS or offering several local networks.
If you are staying in Bangkok, Phuket, Chiang Mai and Koh Samui, AIS, True or dtac generally offer a very satisfactory experience; compare the amount of data and validity period above all.
Download Google Maps or Maps.me maps for offline use before excursions in the North, on Koh Lanta or in national parks.
Upon arrival, leave network selection set to automatic; force a specific operator only if your provider requests it or if the connection fails.
In an isolated location, go outside, move away from a slope or dense building and briefly switch airplane mode on and off to refresh the network connection.

Should you choose a Thailand eSIM or a regional Asia plan?

For a trip limited to Thailand, a Thailand-only eSIM generally offers the best balance of data allowance, price and access to local networks. It is particularly suitable if you land in Bangkok and then visit the North or the southern islands without crossing a border. You avoid paying for regional coverage you will not use.

A multi-country Asia plan becomes more logical when combining several destinations: Thailand and Vietnam, Cambodia, Laos, Malaysia, Singapore, Indonesia, the Philippines, Japan or South Korea. It is convenient for a Bangkok–Siem Reap–Ho Chi Minh City itinerary, or for a backpacking trip passing through Chiang Rai and then Laos. You do not have to install a new eSIM at every stop and can stay connected during a layover or border crossing.

This convenience comes with a trade-off: a regional eSIM often includes less data for a similar budget, and its network partner changes from country to country. Check the exact list of covered destinations: “Asia” does not always mean all of Asia, and territories or maritime roaming are frequently excluded. Crossing a land border may also require a few minutes for the phone to register on the new network.

Choose a Thailand-only offer if your trip remains in the country for one or two weeks.
Choose a regional eSIM if you are visiting at least two countries or taking a long layover that you will genuinely use in the region.
Check the included countries before paying: Laos, Cambodia and Myanmar are not always included in the same plans.
Do not rely on a regional eSIM for a connection on a plane, an international ferry or in territorial waters: maritime coverage is a separate service.

What do traveler reviews reveal about eSIMs in Thailand?

Travelers particularly appreciate the immediate connection after landing and avoiding expensive roaming options from their French operator. Being able to order a Bolt, notify your hotel, find an ATM or use Google Maps as soon as you leave Suvarnabhumi or Phuket removes a great deal of stress. Well-designed apps, fast delivery of the QR code and a clear installation process make a real difference.

Less enthusiastic feedback rarely concerns eSIM technology itself; it usually relates to plan details. Validity beginning upon installation rather than the first connection, a prohibited hotspot, a speed cap after heavy usage or slow customer support can turn a bargain into a source of frustration. People who read the terms and install the profile calmly before departure encounter significantly fewer problems.

Coverage is generally considered very good in busy areas, but expectations should remain realistic once you leave populated zones. An eSIM displaying the name AIS, True or dtac may work perfectly in Bangkok and be less convincing in a northern valley or in the middle of a crossing to an island. The right choice therefore depends more on your actual route than on any universal ranking.

Recurring positive point: installing in advance means you can be connected within minutes of arrival.
Recurring positive point: messaging, maps and transport apps work without needing a Thai number.
Watch out: check the rules for reduced speeds, unlimited data and tethering before purchasing.
Watch out: keep the QR code, order ID and screenshots of your settings so you can communicate effectively with support.

How do you buy, install and activate your eSIM for Thailand?

The process usually takes less than ten minutes, provided you prepare your phone over Wi-Fi and do not delete the profile before the end of your trip.

1
Check compatibility
Make sure your smartphone supports eSIM and is unlocked. Also check that there is enough space to add a line: a phone can store several profiles, but the number of lines active simultaneously depends on the model. Update the operating system before leaving, rather than relying on an uncertain connection at your destination.
2
Buy and receive the QR code before departure
Buy your plan when you have a stable Wi-Fi connection and check the activation deadline stated in the terms. You will usually receive a QR code, sometimes a manual code or an invitation through the provider’s app. Save it in your files, print it if possible and do not share it: an eSIM QR code can generally be used only once.
3
Install the profile on iPhone and Android
On iPhone, go to Settings > Cellular > Add eSIM > Use QR Code, then scan the code. On Android, the wording varies by brand, but the path is often Settings > Network & internet > SIMs > Add SIM > Set up an eSIM, or Settings > Connections > SIM manager > Add eSIM on Samsung. Give the line a clear name, such as “Thailand”, to avoid confusion with your French plan.
4
Activate on arrival and configure the APN
After landing, activate the eSIM line, select it as your mobile data line and allow data roaming on that line if the provider requests it: for many travel eSIMs, this option is necessary even when you are in Thailand. Turn off mobile data on your French line to avoid accidental charges. The APN is often configured automatically; change it only if your eSIM instructions specify it.
5
Troubleshoot if the Internet does not start
Wait a few minutes, then turn airplane mode on and off or restart the phone. Check that the eSIM is selected for data, that roaming is enabled on this line and that your French SIM is not taking over. If necessary, enter the APN provided by the operator, set the network to automatic and contact support with a screenshot of your settings rather than immediately deleting the eSIM.

Number, calls and hotspot: how do you use your eSIM in Thailand?

You can keep your French number while using a Thai eSIM for Internet, provided you configure the lines correctly. In the Dual SIM settings, select the travel eSIM for data and your regular line for calls and SMS if you need to receive banking codes or important messages. However, disable cellular data on the French line: receiving an SMS is generally separate from data usage, but your operator’s rules and charges should still be checked.

Most travel eSIM cards are data-only. They therefore do not allow you to call a Thai restaurant using the Phone app or send a traditional SMS. However, your existing WhatsApp number remains the same: WhatsApp relies on the Internet, not on the number of the SIM currently in use. Inform your contacts before leaving, keep Wi-Fi calling enabled if your operator allows it abroad, and use messaging apps for hotels, guides and drivers whenever possible.

Tethering lets you connect a computer, tablet or travel companion’s phone to your eSIM, but you must confirm that the plan allows it. Some unlimited plans restrict hotspot use or apply a separate quota. A video call, cloud synchronization or computer update can use several gigabytes very quickly; disable automatic backups and choose a strong password for your access point.

If your allowance runs out, do not assume that the plan will renew automatically. Open the provider’s app or customer area: you can often top up with an additional package or buy a new eSIM. Do this before losing all connectivity, or keep a bank card and access to hotel Wi-Fi available. If you purchase a second plan, check which line is actually selected as the data source.

Set the eSIM as the default mobile data line and disable automatic data switching to your French line.
Keep your French line active only if you need banking SMS or incoming calls; check its roaming conditions.
WhatsApp, Signal, Telegram, iMessage and FaceTime continue to work with your usual number as soon as data is active.
Before relying on hotspot access for remote work, check that tethering is allowed and test it in France or at your hotel.
Monitor your usage in your phone settings and in the provider’s app; set an alert before reaching the limit.

What should you consider when choosing your Thailand eSIM and avoiding mistakes?

To estimate your needs, allow around 1 to 3 GB per week for maps, messaging and bookings; 5 to 10 GB for a very connected week with social media; and more if you upload videos, work or share your connection.

Do not choose based solely on the displayed price. Compare the total cost, number of gigabytes, exact duration and local network partner: a cheaper plan that is too short or too limited often costs more after topping up.
Check when validity begins. Some plans start upon installation, while others begin when first connecting to the Thai network; install early only if the provider confirms that you will not use up your days before departure.
Choose a duration slightly longer than your stay. For a 14-day trip, a 15-day plan may be safer than a 7-day package requiring a top-up, especially if you arrive late or leave after midnight.
Read the definition of unlimited. A plan may slow down after a certain daily amount of data, restrict video quality or limit hotspot use; these details matter more than the word “unlimited” itself.
Choose the network according to your itinerary. For Bangkok and the most visited islands, competition is strong; for the mountainous North, secondary roads or rural stays, look for a partner known for its nationwide coverage.
Install the profile before leaving, but do not necessarily activate data immediately. Take a screenshot of the instructions, QR code and any APN: you will remain self-sufficient even without Wi-Fi upon arrival.
Disable automatic updates, photo backups over 4G/5G and high-definition video playback. These use up your data far more quickly than Maps or WhatsApp.
Prepare a backup plan: offline maps, your hotel address saved in Thai and English, and airport or accommodation Wi-Fi. An eSIM is very convenient, but no mobile connection is guaranteed in every bay, valley or boat.
Avoid deleting your eSIM to “start over” until support asks you to do so. The QR code cannot always be reinstalled, and deleting it may make reactivating the profile difficult or impossible.

Questions fréquentes

Will my eSIM work as soon as I arrive at Bangkok or Phuket airport?

Yes, if it is already installed and you activate the data line upon landing. Allow data roaming on the eSIM if requested, then wait a few minutes for it to register on the local network.

Exactly when does my eSIM plan’s validity begin?

It depends on the provider: it may begin upon installation, activation or the first connection in Thailand. Check this rule before purchasing, as it determines the best time to install the profile.

Can I use one eSIM on several phones or a tablet?

No, an eSIM profile is normally linked to a single device after installation. To connect multiple devices, use the hotspot if your plan allows it, or purchase a separate eSIM.

Can I call Thai emergency services with a data-only eSIM?

Do not rely on a data-only eSIM for traditional emergency calls. In Thailand, the general emergency number is 191; keep a working calling solution, ask for help nearby or use your main line if it can make calls.

Can I get a refund if my eSIM does not work?

Refund conditions vary considerably and often become restrictive after the profile has been installed or used. Contact support promptly with screenshots of your settings and do not delete the eSIM before receiving their instructions.