Yesim TeamLand at Suvarnabhumi, and the first thing immigration wants is your TDAC, the digital arrival card every visitor has to complete before landing. Airport Wi-Fi at that exact moment is often patchy or nonexistent. That’s the moment a working eSIM stops being a nice-to-have and becomes the thing standing between you and a smooth entry into Thailand.
eSIM stands for embedded SIM, a digital SIM profile built into your phone rather than a physical card you insert. Dozens of providers sell one for Thailand and promise unlimited data, but the fine print is where they differ: which local network they connect to, what happens to your speed after a daily cap, whether hotspot works, and whether you get a Thai phone number at all. This guide covers the best eSIMs for Thailand in 2026, compared honestly, with a clear answer for different kinds of trips, whether you’re visiting Bangkok for a week or exploring Thailand for a month.
See also: Prepaid SIM Cards and Mobile Internet in Thailand for Tourists.
Why do you need mobile data in Thailand?
Anyone who’s traveled to Thailand before knows Wi-Fi alone doesn’t cut it once you’re out exploring. A few everyday moments make this obvious fast:
- Completing and showing your TDAC at immigration before you’ve even left the airport.
- Booking a Grab (Southeast Asia’s Uber) from outside, where hotel Wi-Fi doesn’t reach.
- Reading street signs and menus that aren’t always in English, translated live through your camera.
- Checking reviews and directions on the move, not just from your hotel room.
- Making local calls to a restaurant or driver when a message won’t get answered fast enough.
Hotel or cafe Wi-Fi doesn’t help the second you step outside, and that’s exactly when reliable data across Thailand matters most. Data users who plan ahead with an eSIM before their trip skip this problem entirely.
What should you look for in a Thailand eSIM?
Searching for the best eSIM Thailand travelers recommend usually turns up the same handful of names. What separates the best eSIM providers Thailand has to offer comes down to a few concrete things, not the brand name:
- A real local network. AIS or True, both are strong enough for most trips, so this matters less than people assume.
- Actual high-speed data per day, especially the Fair Use Policy limit behind “unlimited” claims.
- Hotspot support, important if you’re tethering a laptop.
- A local Thai number, only relevant for a handful of scenarios like Grab, food delivery, or bank one-time codes.
- Simple activation and confirmed compatibility with your specific phone.
Does “unlimited” always mean unlimited? Understanding Fair Use Policy
Most “unlimited” Thailand eSIM plans give you a fixed amount of high-speed data each day, often somewhere between 2GB and 5GB, then drop your speed to something far slower for the rest of that day. This daily allowance, sometimes called a data allotment, resets every 24 hours rather than carrying over.
That gap matters more than it sounds. A connection throttled to around 1 Mbps still handles maps and messaging apps fine. It won’t handle video calls or streaming well at all, so know your own usage pattern before choosing the right eSIM based on the unlimited label alone. Check the daily high-speed data cap before assuming “unlimited” covers everything you plan to do, and remember that whoever markets the “purest” unlimited claim without publishing a number is often the one with the strictest catch elsewhere, more on that below.
Yesim tip: before buying any “unlimited” plan, search the provider’s own terms page for the words “fair use” or “high-speed.” If you can’t find a specific daily number anywhere, treat that silence as the actual limit.
Which mobile network is best in Thailand: AIS or True?
Thailand’s network market isn’t really three separate players anymore. True Corporation absorbed dtac network in 2023, so the dtac network now runs on True’s infrastructure as a legacy brand rather than its own network. Any comparison still listing “ais network, TrueMove H, and dtac” as three distinct options is describing a structure that no longer exists.
That leaves two real networks, and independent testing gives a clearer answer than either company’s own marketing:
- AIS: Opensignal’s Thailand testing puts AIS ahead on 5G availability at 38.8%, roughly seven points clear of True on 32.1%, and ahead again on 5G consistent quality. AIS also claims 5G reaching over 95% of the population. Independent sources repeatedly describe AIS as the stronger network for islands, mountains, and remote provinces specifically.
- True (including the former dtac): the true network is larger by subscriber count, reported at 93% nationwide 5G coverage as of February 2025 and over 99% in Bangkok, with a stated target of 98% coverage by the end of 2026. True is competitive in cities and along major tourist corridors, and still working through integrating two legacy networks into one.
For a Bangkok-and-Phuket trip, either network handles it fine, and network in Thailand generally runs strong across cities and tourist areas regardless of which one your eSIM connects to. If your route includes national parks, smaller islands, or Chiang Mai and the north, AIS tends to hold up better in independent measurement. Don’t overthink this part among the best mobile networks available. Which eSIM package fits your trip, price, data allowance, Fair Use Policy, and whether hotspot or calls are included, matters more than the network name printed on the plan.
The best eSIMs for Thailand: our comparison
This ranking of the best eSIMs for Thailand is based on objective criteria: price, data allowance, validity period, the Thai network used (AIS, DTAC, or True Move), availability of a local phone number for calls, and ease of use of the app. Each of the top Thailand eSIM providers listed below has been evaluated based on these same criteria.
1. Yesim
Yesim connects via DTAC in Thailand. Its 30-day unlimited plan includes unlimited local calls and texts—a feature confirmed by an independent review from Monito and rare among competitors, most of whom offer only data. A VPN is included, with 24/7 support available.
Yesim prepaid plans for Thailand, based on the currently listed rates:
| Date | Duration | Price | Price per GB |
|---|---|---|---|
| 1 GB | 30 days | $3.12 | $3.12/GB |
| 5 GB | 30 days | $8.40 | $1.68/GB |
| 10 GB | 30 days | $13.20 | $1.32/GB |
| 20 GB | 30 days | $20.40 | $1.02/GB |
| 30 GB | 30 days | $27.60 | $0.92/GB |
The 20 GB plan, the most popular one, works out to about $1.02/GB, with an advertised 67% discount off the standard rate. The 30 GB plan goes even lower, at $0.92/GB.
Ideal for: travelers who want a fully functional Thai phone number with unlimited calls and texts for 30 days, a built-in VPN, and an excellent price per GB on standard prepaid plans.
2. Ubigi
Ubigi, a member of the NTT Group, operates as a full MVNO in Thailand, which means it is not tied to a single carrier but connects to the best available network, with AIS and True Move as its main partners. Its SmartStart system doesn’t start counting down the plan’s validity until the phone actually connects to the Thai network, allowing you to purchase your eSIM well in advance without losing any days of validity.
| Date | Duration | Price |
|---|---|---|
| 1 GB | 7 days | $5 |
| 3 GB | 15 days | $9 |
| 10 GB | 7 days | $18 |
| 10 GB | 30 days | $22 |
| 25 GB | 30 days | $42 |
| Unlimited | 7 days | $29 |
Note: The unlimited option is only available for a short 7-day period with Ubigi, which is quite rare in this market. The service does not offer calls or text messages and customer support is not available 24/7, unlike most of the competitors in this comparison.
Ubigi also offers monthly and annual subscriptions with automatic renewal, a feature that’s fairly rare among travel eSIM providers and is designed more for temporary residents or frequent visitors than for a simple tourist trip. Tethering is available on Ubigi plans, which is handy for connecting a laptop on the go.
Ideal for: travelers who want the widest possible network coverage without worrying about losing days of validity by purchasing their plan in advance.
3. Airalo
Airalo provides coverage in Thailand through AIS and DTAC, two reliable 4G and 5G networks in both cities and tourist areas. A unique feature in this market is the Discover+ option, which provides access to a temporary Thai phone number for receiving calls and texts, in addition to the standard data plan—details vary depending on the plan selected.
| Date | Duration | Price |
|---|---|---|
| 1 GB | 7 days | $4.50 |
| 2 GB | 15 days | $5.00 |
| 3 GB | 30 days | $6.00 |
| 5 GB | 30 days | $8.00 |
| 10 GB | 30 days | $12.00 |
| 20 GB | 30 days | $18.00 |
Please note: Airalo does not offer an unlimited plan for Thailand; it only offers fixed data tiers. This is a good option for light to moderate use, but less suitable for heavy streamers.
Ideal for: budget-conscious travelers who want an affordable fixed data plan that’s quick to set up and doesn’t require a specific app.
4. Holafly
Holafly offers only unlimited data plans in Thailand through AIS, one of the country’s most reliable networks, with good 4G and 5G coverage in major cities. Setup is instant: purchase online, receive a QR code via email, scan it, and you’re connected. However, data sharing is capped at 500 MB per day—a form of fair usage policy applied specifically to the hotspot rather than to mobile data itself.
| Duration | Price | Price per day |
|---|---|---|
| 1 day | $6.90 | $6.90/day |
| 3 days | $12.90 | $4.30/day |
| 5 days | $20.90 | $4.18/day |
| 15 days | $50.90 | $3.39/day |
| 30 days | $74.90 | $2.50/day |
All Holafly plans are unlimited by default; this provider does not offer any plans with a fixed data allowance. Its “Always On” feature is worth noting: once the plan expires, users retain 1 GB of free data every month, for life, in over 70 countries, a real safety net for frequent travelers.
Ideal for: travelers who want unlimited data without ever having to monitor their usage, and who appreciate the idea of retaining residual data access after their trip ends.
5. Saily
Saily, developed by Nord Security includes security features built right into the app: an ad blocker, protection against malicious links, and virtual locations. Like most travel eSIMs, Saily offers data only, without an associated phone number.
| Date | Duration | Price |
|---|---|---|
| 1 GB | 7 days | $2.99 |
| 3 GB | 30 days | $4.99 |
| 5 GB | 30 days | $6.99 |
| 10 GB | 30 days | $8.99 |
| 20 GB | 30 days | $17.99 |
An unlimited plan is also available, with a customizable duration ranging from 10 to 30 days; check the price directly on the website at the time of purchase.
Ideal for: travelers who want excellent value for the price combined with built-in security features, without needing a local phone number.
6. GoMoWorld
GoMoWorld offers simple, transparent rates with no unnecessary add-ons to compare. The data-to-price ratio remains competitive for a typical vacation, with no additional features to consider. The exact tiered rates are not published consistently enough to be reliably reproduced here; please check the provider’s website directly before purchasing.
Ideal for: travelers who want a hassle-free eSIM without spending time comparing multiple options.
eSIM Comparison for Thailand: Summary Table
Here are all six providers side by side, so you can compare their networks, prices, data allowances, and local number availability at a glance:
| Supplier | Network operator | Starting price | Data allowance | Validity | Local calls & texts |
|---|---|---|---|---|---|
| Yesim | DTAC | $3.12 (1 GB) | 1 to 30 GB, or unlimited | 30 days | Yes, on the 30-day unlimited plan |
| Ubigi | AIS + DTAC (Full MVNO) | $5 (1 GB / 7 days) | 1 to 25 GB, or unlimited (7 days) | 7 to 30 days; monthly/annual plans available | No |
| Airalo | AIS + DTAC | $4.50 (1 GB) | 1 to 20 GB | 7 to 30 days | No |
| Holafly | AIS | $6.90 (1-day unlimited) | Unlimited only | 1 to 30 days | No |
| Saily | Local Networks | $2.99 (1 GB) | 1 to 20 GB, or unlimited | 7 to 30 days | No |
| GoMoWorld | Local Networks | Competitive; check the website | Varies | Varies | No |
eSIM with a local number or data-only?
Most eSIMs for travel to Thailand are data-only, with no phone number. For calls and messages during your stay, WhatsApp, Telegram, and FaceTime work perfectly over the eSIM’s internet connection at no additional cost.
However, some providers offer a local phone number option—a true rarity in this market: Yesim with its 30-day unlimited plan, and sometimes Airalo through its Discover+ option, which is available depending on the plan you choose. This option is worth considering if you need to receive a direct call from your hotel or a driver, rather than relying solely on messaging apps.
eSIM vs physical SIM card in Thailand
Since August 2025, Thailand’s regulator requires a live facial scan for every new SIM registration or swap, on top of the passport-based verification already in place. A further rule that took effect in May 2026 caps non-Thai nationals at three SIM cards per operator, requires registration to happen in person at a shop or authorized dealer, and requires any registered SIM to be activated within 60 days. Tourist SIM cards themselves are capped at a maximum 60-day validity, with no top-up extension past that point.
A foreign travel eSIM works differently: it roams onto a Thai network rather than registering a new subscription with a Thai operator, so none of that process applies, no counter, no facial scan, no passport upload, no three-SIM limit. One honest caveat matters here: no official source has directly confirmed whether these registration rules formally extend to foreign roaming eSIMs at all, since the regulation is written around SIMs issued by Thai operators. The safest read is that today’s rules address locally issued SIMs, not that travel eSIMs are officially exempt, and it’s worth a quick check closer to your travel date given regulators were still consulting on expanded verification rules as of mid-2026.
| Physical SIM card | Travel eSIM | |
|---|---|---|
| Registration | Passport plus live facial scan, in person | None required |
| Where you get it | Operator counter or authorized dealer | Online, before you fly |
| Non-Thai national SIM cap | 3 per operator | Not applicable |
| Activation window | Must activate within 60 days of registration | Activates on first connection to a local network |
| Maximum validity (tourist SIM) | 60 days, no top-up extension | Set by the plan you buy, renewable |
| Thai phone number | Yes | No, on standard data-only plans |
| Price per gigabyte | Usually lower | Usually higher |
| Setup time | Counter queue plus verification | A few minutes at home |
If a physical SIM still suits your trip better, the prepaid SIM card guide for Thailand walks through where to buy one, and the roaming in Thailand guide covers how that compares to both options.
How much data do you need for a trip to Thailand?
Here are some usage benchmarks by app to help you estimate your needs:
- Google Maps: about 5 MB per hour of active use.
- Instagram: about 100 MB per hour of browsing.
- YouTube: about 500 MB per hour of viewing.
- WhatsApp calls: about 50 MB per hour of calling.
For a two-week trip, plan on about 10 GB for light use, 20 GB for standard use covering browsing, social media, and messaging, or an unlimited plan for heavy use including streaming and regular video calls.
Is your smartphone eSIM-compatible?
Make sure you have an eSIM-compatible device before purchasing:
- iPhone XS, XR, and later models
- Samsung Galaxy S20 and later models, including foldable models
- Google Pixel 3 and later models
To check quickly, dial *#06# on your phone and see if an EID number appears. Your device must also be unlocked by your original carrier. Check the full list of eSIM-compatible devices to confirm your exact model.
How do you install and activate your eSIM for Thailand?
Activating the eSIM for Thailand is a simple process, as long as you follow the steps in order:
- Purchase your plan online before you leave.
- Receive the QR code via email or directly in the app.
- Scan the code in your phone’s settings while connected to a stable Wi-Fi network.
- Set the eSIM as your primary line for mobile data.
- Turn off data roaming on your physical SIM card to avoid roaming charges from your usual carrier.
- Once you arrive in Thailand, enable data roaming on the eSIM profile.
Conclusion: What’s the best eSIM for Thailand?
For most travelers, Yesim offers the best combination of unlimited data, a local phone number, and easy activation for a trip to Thailand. For more specific needs, Ubigi remains a good choice for maximum network coverage, and GoMoWorld is ideal for those looking for the simplest and most affordable option. Compare your itinerary and data needs, then choose your eSIM plan for Thailand on Yesim before you leave. To plan the rest of your trip, check out our guide to the best places to visit in Thailand.
Vika Laki
