Travel data · Thailand
Thailand travel eSIMonline the moment you land in Bangkok
Pick between eSIM, pocket WiFi and roaming for your trip, check your phone in 30 seconds, and install at home. Plus the one thing to know about Thailand.
- No airport queue
- No SIM swap
- No roaming bill shock
What suits my trip?
Change the answersTravelling as
What matters most
Pick Travel eSIM
Solo or two, 5 days: a travel eSIM is close to the right answer. Install it at home, it connects as you land, and it is usually the cheapest per GB.
See Thailand eSIM plans on Yesim ↗ Compare eSIM prices too ↗eSIM vs pocket WiFi vs roaming
The column that fits your answers is highlighted.
Travel eSIM
Installed by QR before you go
- ✓Getting itInstall by QR code before you fly
- !SharingHotspot from your phone (plan permitting)
- ✓BatteryNothing extra to charge
- ✓Cost levelUsually the cheapest per GB
- !Watch out forPhone must be unlocked and eSIM-capable
Pocket WiFi
Pick up and return a device
- !Getting itPick up, carry and return a device
- ✓SharingConnects several devices at once
- !BatteryOne more device to keep charged
- !Cost levelDaily rental fee plus deposit
- ×Watch out forLose it and you pay for the device
Carrier roaming
Nothing to prepare
- ✓Getting itNothing to set up
- ✓SharingHotspot usually allowed
- ✓BatteryNothing extra to charge
- ×Cost levelUsually the most expensive
- ×Watch out forBill shock if you pass the cap
Rule of thumb: solo or two → eSIM; several people sharing one connection → pocket WiFi; a short trip where convenience beats cost → roaming.
Mobile networks in Thailand
AISTrue (merged with dtac)NT
Thailand's mobile market is dominated by two big networks: AIS, the largest, and True, which absorbed dtac in their 2023 merger. Most travel eSIMs connect through one of these two, and both are strong in every place on a normal tourist route.
Bangkok, Chiang Mai and the coastal cities have fast, dense coverage, and the popular islands — Phuket, Samui, Phangan, Krabi's beaches — are well served in towns and resort areas. Signal gets patchy on remote beaches, in national parks and in the mountainous border regions, so treat a jungle trek or a far-flung island cove as offline time.
Know this first in Thailand
Island-hopping? Coverage is best in populated areas; boats between islands and quiet stretches of coast can be dead zones, so download tickets and maps before you leave WiFi.
Will an eSIM work on my phone?
Two things must both be true: the phone supports eSIM, and it is not locked to a carrier. A locked phone can install an eSIM and still never connect.
Most iPhones from the XS and XR on support eSIM; of those sold in mainland China, only a few recent models do, and inside mainland China an eSIM from abroad cannot be installed. Lock status: Settings → General → About → Carrier Lock should read “No SIM restrictions”.
Menu names differ by maker, and the same model can lack eSIM depending on the country it was sold in. No menu? Use the EID check above.
Answer the two questionsAn EID plus an unlocked phone means a travel eSIM will work.
Setting it up: five steps
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What to look for in a Thailand plan
- Days first, data second — a plan that expires mid-trip is worse than one that runs a little low.
- Hotspot/tethering allowed, if you travel with a laptop or share with a partner.
- Which local network it uses — see above; coverage beats a small price difference.
- A top-up option, so you can extend without installing a new eSIM.
- Data-only is normal: most travel eSIMs come without a phone number, and calls happen over WhatsApp or FaceTime anyway.
Good to know in Thailand
- Daily life for a visitor runs on data: Grab for rides, translation apps at street stalls, and QR codes everywhere — Thailand is one of the most QR-payment-heavy countries you will visit.
- Tourist SIM counters at Suvarnabhumi and Don Mueang airports are famous and genuinely fine — but they meet every long-haul arrival wave, so an eSIM installed before departure saves you the one queue you least want after a red-eye.
- If your trip includes long bus or train legs (Bangkok–Chiang Mai, the southern lines), coverage along the routes is decent but variable — download entertainment in advance.
Thailand eSIM plans on sale right now
Prices and data packages move week to week — compare current plans and pick the days-and-data combo that fits your trip. We deliberately quote no prices: they go stale too fast to trust. The button above always opens live pricing.
- Your trip
- Solo or two · 5 days · Cost
- Main networks
- AIS · True (merged with dtac) · NT
- Seller
- Yesim
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Frequently asked questions
Will WhatsApp and my phone number still work?
Yes. Keep your home SIM installed and WhatsApp stays tied to your usual number while data flows through the travel eSIM.
Can I share the data with my laptop?
Usually yes, via your phone's hotspot — but some plans block tethering, so check the plan details before buying.
When should I buy and install it?
A few days before departure, on home WiFi. Enable it when you land — unless the plan starts at install, which is why you check the activation rule first.
My phone doesn't support eSIM — now what?
A physical tourist SIM on arrival or a pocket WiFi rental still works fine — the comparison above applies the same way.
Why are there no prices on this page?
Because they change weekly. A price table would mislead you within a month, so we link to live pricing instead.