Best eSIM for Thailand

When you should not buy from us

No eSIM suits every trip. These are the cases where something other than our Thailand plan is the better buy.

• You are staying a month or more. Thai tourist SIMs sold at the airport are genuinely cheap and often better value at that length.
• You need a Thai number for Grab or local bank verification.

What to compare before you buy

The cheapest Thailand eSIM is rarely the best one. These are the things that decide whether a plan actually works for your trip.

• Price per gigabyte, not the headline price: a $5 plan with 1 GB costs more per gigabyte than a $13 plan with 5 GB.
• Whether hotspot and tethering are allowed. Many cheap plans block them, which matters the moment you open a laptop.
• What happens when the data runs out: can you top up the same eSIM, or must you buy and install a new one?
• What 'unlimited' means on that plan: almost always a daily allowance at full speed, then a much slower connection.
• Whether validity starts when you buy, when you install or when you first connect. Each of our plan pages says which.
• Whether there is a refund if the eSIM will not work on your phone, and whether a human answers when something goes wrong.

What actually matters in Thailand

• Bangkok and the main islands have strong 4G and 5G; smaller islands, national parks and the far north are noticeably weaker on every network.
• Ride-hailing and food delivery apps are used constantly here, which uses more data than people expect.
• Ferries between islands often have no signal at all, so screenshot your bookings.

How much data do you need for Thailand?

300–500 MB a day is typical. For two weeks of island-hopping, 10 GB is a safe choice.

Not sure? The data calculator works it out from how you actually use your phone.