TL;DR: Heading to Bangkok, Phuket, or Chiang Mai? Pick the right Thailand eSIM for your trip length, data habits, and budget.
Why eSIM beats airport SIMs
Bangkok airports are busy year-round. Digital delivery means no queue after a long flight.
Choosing a plan
Match validity to your visa length — 8, 15, or 30-day options are common.
Island hopping
One national plan covers Bangkok, islands, and northern temples without swapping SIMs.
Get started
Shop RoameSIM Thailand plans and read how much data you need.
Get your plan on RoameSIM
Guest checkout, instant QR by email, and support if you need help. Browse eSIM plans · Why eSIM? · Troubleshooting
Frequently Asked Questions
Which networks do Thailand eSIMs use?
Plans route through major Thai carriers with strong urban 4G/5G.
Is 5 GB enough for two weeks?
For maps, messaging, and social media — often yes. Add more if you stream daily.
Do I need a Thai phone number?
Most travellers only need data; WhatsApp and LINE work over mobile data.