Best eSIM for Thailand in 2025

eSIM vs. local SIM in Thailand

Both eSIMs and local SIM cards offer great options, but each has its perks and drawbacks. Let’s take a look at the main differences between them.

Ease of purchase

• An eSIM is definitely a more convenient option in terms of ease of purchase. You can buy and activate an eSIM online, usually just by scanning a QR code. This way, you’re connected as soon as you arrive, no need to hunt for a store or worry about installation.
• Local SIM. Local SIM cards are available at Thai airports, convenience stores, and telecom shops. Activation is usually quick, though you’ll need your passport and may occasionally encounter a language barrier. Be cautious, as tourists sometimes face higher prices than locals, so comparing options or checking prices online can help avoid overpaying.

Coverage

• Most eSIM providers partner with Thai carriers like AIS, DTAC, and TrueMove, so coverage should be similar to what you’d get with a local SIM. However, in very remote areas, coverage may vary depending on the eSIM provider’s local agreements.
• Local SIM. Local SIM cards connect directly to the networks of Thai carriers, which might give them a slight advantage in more rural or remote locations.

Data speed

• Data speeds on an eSIM are generally the same as you’d get with a local SIM, as they connect to the same major Thai networks. You should get solid speeds, particularly in cities and popular areas.
• Local SIM. Speeds depend on the carrier and plan you choose. Some budget-friendly prepaid options might have slower speeds, while premium plans give you access to the carrier’s full network speed.

Cost-effectiveness

• Prices for eSIM plans vary depending on the data plan and provider, and they can be especially affordable for longer stays if you find a good deal with plenty of data.
• Local SIM. Local SIMs can be a cheaper option for short visits, but be cautious of extra costs like activation fees. Budget plans often have smaller data limits, and going over can lead to high per-MB charges.

Things to consider when choosing an eSIM for Thailand

Before buying an eSIM for Thailand, there are a few important things I’d recommend you consider.

• Phone compatibility. First, make sure your phone actually supports eSIM functionality and is compatible with the networks your provider uses in Thailand. Most newer smartphones have this capability, but it’s always worth double-checking with both your device and the provider.
• Coverage and partner networks. Look for an eSIM provider that partners with major Thai carriers like AIS, DTAC, or TrueMove. This can make a big difference, especially if you plan to explore outside the main cities, where reliable coverage can enhance your experience.
• Data limits. Take a close look at the data limits offered by each plan. Some have daily caps, while others provide a set amount of data for your whole trip.
• 5G support. If fast speeds are important to you, check whether the eSIM plan includes 5G access, especially in Thailand’s bigger cities.
• Multi-country coverage. If you’re traveling to other destinations in Southeast Asia, look for an eSIM with multi-country coverage. This can be a convenient and cost-effective option, letting you stay connected without juggling multiple plans.
• Roaming capabilities. Confirm if the eSIM plan allows for roaming within Thailand and surrounding areas. Some plans restrict data usage outside specific locations, so check roaming terms if you plan to explore border regions.
• Customer service. From personal experience, having responsive customer service can be a lifesaver if you run into issues. Look for providers known for good support and clear setup instructions.

How to buy and activate an eSIM in Thailand

Buying, installing, and activating an eSIM is usually a painless procedure. The exact steps you’ll need to follow may depend on your provider and device, but here are some general guides to help you out.

1. Choose an eSIM provider

First, choose a provider and plan that best suits your needs. I hope my list of the best eSIM options for Thailand will come in useful here.

• Pre-ordering online. You can buy an eSIM before arriving in Thailand. This option is convenient since you can activate the eSIM right away, often by scanning a QR code, which lets you to be connected as soon as you land.
• Buying locally. If you’d rather wait until you’re in Thailand, you can buy an eSIM from local providers, either at major airports or telecom shops. Local eSIMs may offer more tailored plans, but you might need help with setup, especially if there’s a language barrier.

2. Buy and install your eSIM

Once you’ve selected your provider, buy your chosen plan online or in-store. If you’re pre-ordering, you’ll receive an email with instructions and a QR code for easy setup.

• Scan the QR code. Open your phone’s settings, head to “Mobile” or “Cellular,” and select “Add Data Plan.” Then, scan the QR code from your eSIM provider, or you can enter details manually if needed to install it directly onto your device.
• Configure data settings. In your settings, set the eSIM as your primary data plan if you want it to handle your internet. This way, you’ll be using data from the eSIM while still keeping your main SIM active for calls and messages if you prefer.

3. Activate your eSIM

Once you’re in Thailand, activate your eSIM if it hasn’t already been done during setup. Some plans activate automatically, while others might need you to turn on data roaming. Be sure to check your provider’s instructions to avoid any extra fees and ensure you’re fully connected.

Conclusion

To wrap up, I think any of these seven eSIM providers would be a solid choice for staying connected in Thailand.

They all offer good coverage, reliable speeds, and fair pricing, so it really comes down to what you need most. Whether that’s lots of data, multi-country access, budget-friendly options, or reliable customer service.

Think about what matters most for your trip, and you’ll be able to pick the eSIM that’s just right for you.