The Thailand tourist SIM vs eSIM choice comes down to one question: do you need a Thai phone number? A tourist SIM from AIS, dtac or TrueMove H is a local line registered to your passport at a counter, with unlimited data under fair usage. A travel eSIM is data only, bought and installed before departure, so your phone is online when the plane lands.
Key takeaways
- Tourist SIM packages from all three carriers start at ฿299 to ฿449 for 8 days, per the Saily tourist SIM guide (October 2025).
- Tourist SIMs require a passport and a registration that takes about 10 to 30 minutes.
- Travel eSIMs such as TonMobile, Saily and Nomad list small Thailand plans from about $3 to $5 and carry data only.
- A Thai number matters for local calls and SMS; many trips work fine without one.
What the choice between a tourist SIM and an eSIM really changes
A tourist SIM and a travel eSIM both get you online in Thailand, but they differ in timing, paperwork and what the line can do. A tourist SIM is bought on arrival and gives you a local Thai line. A travel eSIM is a downloadable data profile you install before you leave home.
Both options ride the same Thai networks. Nomad lists True, AIS and dtac for its Thailand eSIM, and Ubigi lists AIS and True Move. Signal quality depends on the network underneath, not on whether the SIM is plastic or digital.
Tourist SIM (AIS, dtac, TrueMove H)
- Bought at an airport kiosk or a city shop
- Passport registration, about 10 to 30 minutes
- Thai line registered to your passport
- Unlimited data under fair usage on most packages
- Replaces your home SIM in a single-SIM slot
Travel eSIM
- Bought online before the trip or after arrival
- Set up by QR code or app over Wi-Fi
- Data only, no Thai phone number
- Home line can stay active next to it
The three Thai networks are close on speed. Opensignal's August 2026 report, based on data from April to June 2026, puts them within a few Mbps of each other.
AIS, dtac and TrueMove H tourist SIM prices
AIS, dtac and TrueMove H sell tourist SIM packages for 8, 15 and 30 days, according to the Saily tourist SIM guide published in October 2025. The 30 day package costs ฿1,199 at all three carriers. The dtac Happy Tourist SIM is the lowest entry price at ฿299 for 8 days.
| Tourist SIM | 8 days | 15 days | 30 days | Data |
|---|---|---|---|---|
| AIS Traveller SIM | ฿449 | ฿699 | ฿1,199 | Unlimited, fair usage |
| dtac Happy Tourist | ฿299 | ฿599 | ฿1,199 | 15 GB, 30 GB or unlimited, fair usage |
| TrueMove H Tourist | ฿449 | ฿699 | ฿1,199 | Unlimited, fair usage |
The AIS tourist SIM and the TrueMove H tourist SIM share identical price points. The dtac Happy Tourist SIM steps up from 15 GB to 30 GB to unlimited as the package gets longer.
Airport vs city pricing
Airport SIMs typically cost 20 to 30% more than the same packages in city shops, per the Saily guide. If you can manage your first hours on hotel Wi-Fi, a city shop is the cheaper place to buy.
Network choice is a matter of preference rather than a clear winner. Opensignal gave dtac the Reliability award with 907 points, AIS the Consistent Quality award with 75.1%, and named dtac and TrueMove H joint Best Network.
Passport registration and airport SIM counters
Every Thai tourist SIM is registered to the buyer's passport name and number before it works. Registration takes about 10 to 30 minutes at the counter, according to the Saily guide. Kiosks for AIS, dtac and TrueMove H operate at Thailand's international airports.
Queues at the Thailand SIM card airport kiosks can be long in peak season. Arriving travellers already have one formality to handle: the Thailand Digital Arrival Card (TDAC), required for all foreign nationals since May 1, 2025. The TDAC is free at tdac.immigration.go.th and is submitted within 72 hours before arrival.
What to bring to the SIM counter
- Your passport, since the SIM is registered to its name and number
- A phone that is not carrier-locked, so it accepts a Thai SIM
- A SIM tool or pin to swap the card
- Time in your schedule for a queue plus 10 to 30 minutes of registration
Travel eSIM prices for Thailand: TonMobile, Saily and Nomad
A travel eSIM for Thailand is bought in US dollars from an online provider and installed over Wi-Fi before departure. TonMobile, Saily and Nomad all list fixed data plans for Thailand, plus unlimited options. None of them includes a Thai phone number.
| Plan | TonMobile | Saily | Nomad |
|---|---|---|---|
| 1 GB, 7 days | $4.00 | $2.99 | $5 |
| 3 GB, 30 days | $5.50 | $5.99 | $6 |
| 5 GB, 30 days | $7.50 | $7.99 | $8 |
| 10 GB, 30 days | $11.00 | $10.99 | $10 |
| Larger plans | 20 GB/30 days $19.00, 50 GB/90 days $45.00 | 20 GB/30 days $19.99 | 50 GB/10 days $15 |
| Unlimited | 7 days $22.53, 15 days $47.47 | 15 days $38.99 | 10 days $15 (sale) |
Prices are what each provider lists on its Thailand page, checked October 27, 2026. Saily lists the lowest 1 GB entry plan, while TonMobile and Nomad sit close together on 3 GB and 5 GB. Nomad lists its 10 day unlimited plan at a sale price.
Long stays
TonMobile
TonMobile's Thailand plans run up to 100 GB for 180 days at $89.00, with price per GB falling to $0.89. Activation is allowed within 180 days of purchase, and $1.50 comes off the first eSIM.
Short trips
Saily
Saily lists 1 GB for 7 days at $2.99. Its unlimited plans run 5 to 30 days, with 5 GB per day at full speed, then up to 1 Mbps.
Network switching
Nomad
Nomad lists True, AIS and dtac with switching between them. Its FAQ states that hotspot is supported.
TonMobile's unlimited plans give 1 GB per day at full speed, then 512 kbps. TonMobile states that no documents are required, accepts cards, Apple Pay, Google Pay and crypto, and installs from its Telegram, Android or iOS app. The full list of providers is scored on the eSIM rating, using the criteria on the methodology page.
Sizing a fixed plan depends on how you use your phone. The guide on how much data a Thailand trip needs covers maps, social apps and video.
When you need a Thai phone number
A Thai phone number matters only when someone in Thailand must call or text you on a local line. Travel eSIMs in this comparison are data only, and Holafly states that calls go through apps only. A tourist SIM from AIS, dtac or TrueMove H is the option that gives you a Thai line.
Thai number helps
Local contacts
Landlords, local businesses or Thai friends who expect to call or SMS a Thai line. Longer stays raise the odds of needing one, covered in the long stay guide.
Data is enough
Typical holiday
Maps, ride apps, messaging and calls over apps all work on a data-only line. Your home number can stay active for bank SMS codes.
Apple Support notes that two eSIMs can be active at once on a supported iPhone. The home number stays on for calls and SMS while the travel eSIM carries data. The home line may still incur roaming charges, so check your carrier's rates before you rely on it.
Keep roaming in check
Choose the travel line for data in SettingsMobile ServiceMobile Data. Data roaming must be on for the travel eSIM line, and you can leave it off for the home line.
Using a tourist SIM and an eSIM together
A tourist SIM and a travel eSIM can split the work: the eSIM covers arrival, the tourist SIM adds a Thai line later. The travel eSIM gets you online at the gate, so you skip the airport kiosk queue. A tourist SIM from a city shop then costs less than the airport version.
With an eSIM
- At homeBuy the plan and install the eSIM on Wi-Fi.
- Wheels downSwitch the travel line on and turn on data roaming for it.
- Arrivals hallMaps, ride apps and messages work while you walk to immigration.
- ExitShow your saved TDAC QR code. No kiosk stop needed.
With a tourist SIM
- At homeNothing to prepare except your passport.
- Wheels downNo data until you buy a SIM.
- SIM kioskQueue, show your passport, wait for registration: about 10 to 30 minutes.
- ExitAirport prices typically run 20 to 30 percent above city shops.
Combining lines works on a phone that accepts a physical SIM next to an eSIM. Apple lists the iPhone XS, XS Max, XR and later as eSIM capable. The phone must also be free of a carrier lock, which SettingsGeneralAbout shows as "No SIM restrictions" next to carrier lock.
Install the eSIM at home
Buy a Thailand plan from a provider such as TonMobile and install it over Wi-Fi. The pre-trip setup guide covers each step.
Switch data on landing
Turn on data roaming for the travel line and set it as the mobile data line. Show your TDAC QR code at immigration.
Add a tourist SIM if needed
Visit an AIS, dtac or TrueMove H shop in town with your passport. Keep the eSIM as a backup data line.
Note TonMobile's terms: data starts being consumed on activation of the eSIM on a device. If the eSIM shows no service after landing, the troubleshooting guide walks through the usual settings.
Verdict: tourist SIM or eSIM for Thailand
A travel eSIM is the better fit for most short Thailand trips, because it skips the counter and keeps your home line active. A tourist SIM is the better fit when you need a Thai number or plan to use heavy data on a local unlimited package. Both use the same AIS, dtac and TrueMove H networks.
Travel eSIM
- Online the moment you land, no kiosk queue
- No passport registration with TonMobile, per its site
- Home number stays available for SMS codes
- Small plans from $2.99 to $5 for a week
Tourist SIM
- Gives a Thai phone number on AIS, dtac or TrueMove H
- Unlimited data under fair usage on most packages
- Needs a passport and 10 to 30 minutes of registration
- Airport kiosks cost 20 to 30% more than city shops
For a broader overview of plans, start at the Thailand eSIM guide. Unfamiliar terms such as fair usage or carrier lock are explained in the glossary.
FAQ
Is a Thailand tourist SIM or an eSIM better for a one week trip?
A travel eSIM suits most one week trips because it is installed before departure and skips the airport queue. Saily, TonMobile and Nomad list 1 GB for 7 days at $2.99 to $5. A tourist SIM makes sense if you need a Thai number.
How much does the AIS tourist SIM cost?
The AIS Traveller SIM costs ฿449 for 8 days, ฿699 for 15 days and ฿1,199 for 30 days, per the Saily guide from October 2025. All three packages are unlimited under fair usage.
What does the dtac Happy Tourist SIM include?
The dtac Happy Tourist SIM costs ฿299 for 8 days, ฿599 for 15 days and ฿1,199 for 30 days. The packages include 15 GB, 30 GB or unlimited data under fair usage.
Do I need a passport to buy a Thailand SIM card at the airport?
Yes. Every Thai tourist SIM is registered to your passport name and number, and registration takes about 10 to 30 minutes. Each foreigner can register up to five SIMs per operator.
Does a Thailand travel eSIM give me a Thai phone number?
No. The travel eSIMs in this comparison, including TonMobile and Holafly, are data only with no Thai phone number. Calls and messages go through apps, while your home number can stay active on a second line.
Which network does an eSIM for Thailand use?
Travel eSIMs use the same Thai networks as tourist SIMs. Nomad lists True, AIS and dtac with switching, Ubigi lists AIS and True Move, and Airalo lists True plus one more network. TonMobile does not name its Thai partner network.