Phuket eSIM: What to do the moment you land at HKT
A Phuket eSIM stays asleep until you switch data roaming on for its line. Flip that switch after landing at Phuket International Airport and the validity clock starts. The days you paid for begin at that first connection, and not at checkout. Your own number carries on from the home SIM, which handles the calls and texts.
12 plans for Thailand, from 1 GB at $3.99 to 20 GB at $17.99, plus 6 unlimited-data tiers. 5 GB for 30 days costs $7.99 — the cheapest of 29 in Asia, against a $10.99 median. Our retail prices from the operator catalogue, checked 13 September 2026.
Thailand · AIS 5G · from $3.99
Last eSIM issued 1 day ago
Landing at Phuket International Airport (HKT)
Nothing connects at HKT until roaming is switched on for the eSIM line. The profile then attaches to True or AIS, the two Thai partner networks, both listed as 5G. No access point name is listed for this plan on either platform. Activation is first-usage, so an eSIM installed a week early costs you no days. The plan tops up online, and the balance carries no expiry, checked 5 September 2026. Coverage runs across the mainland and the islands, including Koh Samui, Krabi and Phi Phi.
Which plan for Phuket
For a fortnight on the beach, the workhorse is 5 GB over 30 days. The listing carried that block at $7.99 when it was checked on 5 September 2026. Thailand's ladder holds twelve plans in all, six of them fixed and six unlimited. The fixed side starts at 1 GB over 7 days and ends at 20 GB over 30. Unlimited windows are sold at 3, 5, 7, 10, 15 and 30 days. A 2 GB block over 15 days is the second rung on the fixed side. Every fixed size from 3 GB upwards runs on the same 30-day window.
Thailand's prepaid line rule
The Thailand country page flags a prepaid line rule and records nothing behind that label, checked 5 September 2026. So we will not tell you how a Thai counter applies it to residents. What we can state is the shape of the plan you are carrying. It holds data and nothing else, and you bought it before departure from outside Thailand. No counter in Phuket sells it to you, and no local number is issued. The line that reaches your phone is roaming traffic on True or AIS.
Krabi, Phi Phi and the ferry legs
Coverage does not stop at Phuket, so an island leg needs no second plan. The Thailand listing names Koh Samui, Krabi and Phi Phi beside the mainland. The same True or AIS connection follows you onto the boat and back. Days keep counting wherever in the country the phone is connected. A domestic flight north or south changes nothing about the line. One purchase therefore covers a trip that keeps moving, checked 5 September 2026.
Before you fly to Phuket
- HKT sits on True and AIS, and either can be picked by name.
- Koh Samui, Krabi and Phi Phi are inside the same Thai coverage.
- The Thailand entry records a prepaid line rule with nothing written behind it.
The country page has the full rule and every plan: Thailand eSIM.