Best eSIM for Thailand (2026)

Thailand has excellent LTE coverage in cities and tourist areas. The best Thailand eSIM uses AIS or True Move networks — the two with the best nationwide reach.

Thailand network landscape

Thailand's three main carriers are AIS (best nationwide coverage), True Move (merged with DTAC, good in cities), and NT/CAT (government, weaker). AIS has the strongest signal on islands like Koh Samui and Koh Phangan, and in northern cities like Chiang Mai and Chiang Rai.

LTE.app Thailand eSIM

LTE.app Thailand plans use AIS and True Move networks for maximum coverage. From 1 GB day passes to 15 GB monthly plans. Instant QR, Smart Coach troubleshooting, and Pro/Premium membership discounts.

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Buy your Thailand eSIM at lte.app/esim/thailand and scan the QR before you board.

Coverage in popular tourist spots

1
Bangkok: Excellent LTE on all carriers. BTS and MRT stations have signal.
2
Phuket: Strong LTE in Patong, Kata, and Karon beaches. Quieter beaches may drop to 3G.
3
Koh Samui: Good LTE on AIS, moderate on True Move.
4
Chiang Mai: Excellent LTE in the city. Mountain areas around Doi Inthanon are sparse.
5
Pai (northern Thailand): Moderate 4G. AIS is the strongest option.
6
Koh Tao/Koh Phangan: Variable. AIS best on the islands.

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Frequently asked questions

Does eSIM work on Thai islands?

Yes on major islands (Koh Samui, Koh Phangan, Koh Tao, Koh Lanta, Koh Lipe). AIS has the best island coverage. Very small islands and dive sites in open water may have limited or no signal.

Is eSIM cheaper than buying a SIM at Bangkok airport?

Yes. Tourist SIMs at Suvarnabhumi or Don Mueang airports cost 300–500 THB ($9–$14) for 15 GB/15 days. LTE.app plans for similar data start lower, with no queue, no language barrier, and instant activation.

Troubleshooting guides

🔧 eSIM Not Working?🔧 eSIM Data Is Slow or Throttled?

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