Thailand eSIM picks

At a glance

• Best for multi-country SE Asia trips: Airalo Asialink regional plan, usually AIS-backed
• Best value for a 1–2 week trip: Nomad Thailand — typically 10-20% cheaper than Airalo on the same data
• Best for unlimited streaming: Holafly Thailand
• For travellers buying in EUR/GBP/JPY/BRL: GigSky — rare multi-currency checkout, sometimes complimentary data for eligible Visa cardholders

Network notes

AIS has the deepest rural coverage and is usually the partner eSIM providers prefer. TrueMove H is comparable in major cities and tourist islands. Coverage on remote islands (Koh Lipe, parts of Koh Lanta) drops to slow 4G or none — no provider’s eSIM will save you there.

Practical connectivity tips

• Install before landing. Suvarnabhumi and Don Mueang Wi-Fi works but is congested at peak arrival times.
• Apps you’ll actually want online: Grab (rides + food), Bolt, Google Maps offline maps for islands, Klook for tickets, LINE for restaurant bookings.
• Long ferry rides (Surat Thani → islands) often drop to no signal for 90+ minutes. Download maps and entertainment beforehand.
• Border-hopping to Laos/Cambodia for visa runs? A regional plan or Dracotel’s persistent balance saves you rebuying.

Watch out for

• 4G/5G is excellent in Bangkok and major beaches but inconsistent on smaller islands.
• Some hotel Wi-Fi captive portals charge per device — your eSIM is usually faster and cheaper.
• SMS-based banking 2FA from your home country may not arrive if your home SIM is off. Switch to an app-based authenticator before you fly.