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Skip the airport SIM queue. An eSIM lets you arrive in Thailand with mobile data already active — no physical card, no cash exchange desk. Here's what to buy and how to set it up.
Two providers cover the vast majority of travellers. Both use major Thai networks and offer easy in-app top-ups.
The most popular eSIM marketplace. Thailand plans from ~$4.50 for 1 GB / 7 days. Install in minutes via QR code. Works on iPhone XS+, Samsung S20+, Pixel 3+.
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Slightly better rural and island coverage on some plans. Unlimited data plan available (fair-use throttle applies). Good option for longer stays or heavy users.
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Network: AIS / True
| Data | Validity | Price (approx.) |
|---|---|---|
| 1 GB | 7 days | ~$4.50 |
| 3 GB | 30 days | ~$9.50 |
| 10 GB | 30 days | ~$19 |
| 20 GB | 30 days | ~$28 |
Best-value entry point. App-based top-up available. Works on most modern eSIM-capable phones.
Network: True / DTAC
| Data | Validity | Price (approx.) |
|---|---|---|
| 3 GB | 30 days | ~$9 |
| 10 GB | 30 days | ~$18 |
| Unlimited* | 30 days | ~$35 |
* Unlimited throttled above daily fair-use limit. Slightly better coverage in rural areas than Airalo Thailand plans.
Prices are approximate and change frequently. Check the provider's site for live pricing before purchase.
eSIM works on iPhone XS and newer (except iPhone SE 1st gen), Samsung Galaxy S20+, Google Pixel 3+, and many other 2019+ Android flagships. Check your phone settings: Settings → Cellular (iOS) or Network → SIM → Add eSIM.
Purchase from Airalo or Nomad, then install the profile. The eSIM is ready but stays dormant — it only activates when you land and your phone connects to a Thai network.
After purchase you'll receive a QR code by email. On iPhone: Settings → Cellular → Add Plan → scan QR. On Android the path varies by manufacturer. Do this step on WiFi — not on the eSIM itself.
Most travellers keep their home SIM active for calls and use the Thai eSIM for data. Under Cellular (iOS) or Network settings, set the Thai eSIM as your default data line.
To avoid unexpected roaming charges, disable data roaming on your home SIM before you land. The Thai eSIM handles all data.
For most visitors an eSIM is easier — no queue at the airport, no handling a physical card, activate before you land. A physical SIM is useful if you need a local Thai phone number (for OTPs, banking apps, or LINE registration).
AIS has the widest coverage overall, including rural areas and islands. True Move H is strong in cities and popular resort areas. DTAC (now merged with True) covers most tourist destinations. All three are reliable in Bangkok, Chiang Mai, Phuket, and Koh Samui.
Most Thailand eSIM plans from Airalo or Nomad are data-only. For voice calls you need a physical SIM or use a VoIP app (WhatsApp, FaceTime, LINE) over the eSIM data connection.
Light use (maps, messaging, some social media): 3–5 GB. Moderate (daily navigation, video calls, streaming): 8–15 GB. Heavy (constant video streaming, hotspot for a laptop): 20 GB+. A 10 GB 30-day plan covers most two-week trips.
Yes — Airalo and Nomad both allow in-app top-ups without reinstalling the eSIM profile. You can also simply buy a new plan from the same provider and it applies to the existing eSIM.
Planning your trip? Thailand first-time visitor guide, Bangkok airport transfers, and browse tours.