The best eSIM for Thailand
In Thailand local SIMs are cheap — the case for an eSIM is landing already connected (Grab straight from the airport) and skipping the counter queues.
What decides the choice in Thailand
- Coverage on AIS, dtac and True: solid 4G/5G in Bangkok, Chiang Mai and the major islands.
- Grab is the standard way to get around and needs data from minute one at Suvarnabhumi.
- On small islands and in the jungle signal varies by carrier: a multi-network eSIM latches onto whichever is available.
Real coverage
5G in Bangkok and strong 4G on the tourist islands. On boat trips between islands the signal fluctuates in open water.
Main cities: Bangkok, Phuket, Chiang Mai, Krabi, Koh Samui. Full detail at eSIM for Thailand.
What to check with any provider
- That Thailand is explicitly on the plan's country list.
- The data policy: truly unlimited, or "unlimited" with fair use?
- Hotspot allowed, a refund guarantee if it never connects, and an invoice with your purchase.
VoaSim checks all three: unlimited with no throttling, hotspot for personal use, invoice on every purchase and the 24 h eSIM Rescue tool.
VoaSim prices today (truly unlimited internet, today's promo)
| Days | Price | Per day |
|---|
| 5 days | USD 18.90 | USD 3.78/day |
| 7 days | USD 23.90 | USD 3.42/day |
| 10 days | USD 30.90 | USD 3.09/day |
| 15 days | USD 42.90 | USD 2.86/day |
| 30 days | USD 61.90 | USD 2.07/day |
| 60 days | USD 106.90 | USD 1.79/day |
Today's promo prices, the same in 160+ countries. Second eSIM in the same order gets an extra 10% off.
Simulate your price for Thailand with your exact travel dates.
See my price →Frequently asked questions
Which eSIM has the best coverage in Thailand?
Coverage depends on the local networks (AIS, True, Dtac): a good travel eSIM connects to them. 5G in Bangkok and strong 4G on the tourist islands. On boat trips between islands the signal fluctuates in open water.
How much does an eSIM for Thailand cost?
At VoaSim, truly unlimited from USD 1.79/day on long plans; for example, 10 days cost USD 30.90. The price is the same in 160+ countries.
Does an eSIM for Thailand still work if I continue to another country?
Yes: the same VoaSim profile works in 160+ countries, with nothing new to buy at the border.
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