eSIM in Thailand: Can I Use One, Where to Buy and What Phone You Need

Three questions come up repeatedly from travellers planning a trip to Thailand: can I use an eSIM there, how do I buy one before I arrive, and will my phone actually work with it. This guide answers all three in full using verified information from Thailand's two official mobile network operators and the country's national telecommunications regulator, the NBTC.

Can I Use an eSIM in Thailand?

Yes. Both of Thailand's main mobile network operators offer eSIM plans for international tourists. AIS and True Corporation, which operates the TrueMove H and DTAC brands, both provide tourist eSIM plans that can be purchased before you arrive or at the airport on arrival.

Thailand has nationwide 4G coverage and an expanding 5G network. According to AIS's own published coverage data, AIS covers 95% of Thailand's population with 5G. Coverage is reliable across Bangkok, Chiang Mai, Phuket, Pattaya and other major destinations. In more remote areas, 4G remains the standard connection type.

One important point: an eSIM purchased for Thailand is designed to work within Thailand's borders. If you plan to cross into neighbouring countries such as Cambodia, Laos or Myanmar on day trips, your signal will drop at the border. A separate multi-country plan would be needed for cross-border coverage.

How and Where to Buy an eSIM Before You Arrive

There are two main routes for purchasing a Thailand eSIM before departure: directly from an official Thai carrier, or through an international eSIM reseller platform.

Official Carrier Websites

Both major Thai carriers sell tourist eSIM plans directly through their official websites. Purchasing direct from a carrier is the most reliable option and the one most likely to satisfy any registration requirement without additional steps on arrival.

• AIS tourist eSIM plans: ais.th/en/consumers/package/international/tourist-plan
• True Corporation tourist eSIM plans: true.th/en/prepaid/sim/tourist

After purchasing online, you receive a QR code by email or through the carrier's app. You scan the QR code to install the eSIM profile on your device. This can be done before you leave home. The plan activates automatically when your device connects to a Thai network on arrival.

An important note on AIS registration: from February 2025, AIS requires real-name passport registration for tourist eSIMs purchased online. According to KKday, which resells official AIS eSIMs, registration must be completed within 24 hours before departure and involves submitting your passport details through the AIS process. AIS sends a confirmation SMS once registration is complete.

An important note on True Corporation registration: from 22 May 2026, True Corporation tourist eSIMs require in-person passport registration at a True store to activate outgoing calls and SMS. If you only need mobile data, this in-store step is not required.

International eSIM Reseller Platforms

A number of established international eSIM platforms sell pre-registered Thailand eSIM plans that run on the AIS or True Corporation network. These plans can be purchased and installed before you travel, with no passport registration required on your part since the reseller handles compliance on their end.

If you choose this route, use only well-established platforms with verifiable reviews. Fraudulent websites offering fake or overpriced eSIM registrations do exist. When the Thailand Digital Arrival Card launched in May 2025, the Thai Immigration Bureau and Tourist Police issued public warnings about similar scam sites. The same caution applies here. If a price appears significantly below what the official carrier charges, verify the platform carefully before entering any personal or payment details.

At the Airport on Arrival

If you prefer to purchase on arrival, official AIS and True Corporation counters operate in the arrivals halls at Suvarnabhumi Airport in Bangkok, Don Mueang Airport in Bangkok, Phuket International Airport and Chiang Mai Airport. Staff at these counters speak English and can assist with plan selection and registration. You will need your original passport. Registration including biometric verification typically takes between 10 and 30 minutes depending on queue length.

NBTC Registration Rules: What You Need to Know

All SIM cards and eSIMs in Thailand, whether purchased from a Thai carrier directly or through a reseller, are governed by regulations set by the National Broadcasting and Telecommunications Commission, known as the NBTC.

The following rules apply to all foreign nationals:

• Original passport required: You must present a valid original passport. Photocopies and photos of passports are not accepted under current NBTC rules confirmed by the Bangkok Post and The Nation.
• Biometric verification: From 18 August 2025, all carriers are required to verify new SIM and eSIM registrations using biometric liveness detection technology. This involves a real-time facial scan processed through the carrier's app or in-store system.
• Maximum three SIMs per operator: Foreign nationals may register no more than three SIM cards or eSIMs per operator. This limit applies across all plan types.
• 60-day tourist SIM limit: Tourist SIM cards and eSIMs are valid for a maximum of 60 days from activation under NBTC regulations. This is confirmed on both the AIS and True Corporation official websites. Validity cannot be extended via top-up after the plan expires.

For stays longer than 60 days, a standard prepaid SIM registered with your passport is a more appropriate option than a tourist SIM or tourist eSIM.

What Phone Specs Do You Need to Use an eSIM?

Two conditions must both be met for an eSIM to work: your device must have a built-in eSIM chip, and it must be network unlocked.

How to Check if Your Device Supports eSIM

The fastest method is to dial *#06# on your device. If an EID number appears on screen alongside your IMEI, your device supports eSIM. You can also check through your device settings:

• On iPhone: Go to Settings, then General, then About. If an EID number is listed, your device supports eSIM.
• On Android: Go to Settings and search for "eSIM" or "SIM Manager". If the option appears, your device is compatible.
• Via manufacturer specs: Look up your exact model on the manufacturer's official website. Look for eSIM, eUICC or Digital SIM listed under connectivity specifications.

iPhone Compatibility

Every iPhone from the XR and XS onwards, released in 2018, supports eSIM. This includes all iPhone 11, 12, 13, 14, 15, 16 and 17 models. There are two regional exceptions to be aware of:

• iPhones purchased in mainland China do not support eSIM on any model.
• Most iPhone models purchased in Hong Kong and Macao do not support eSIM, although certain specific models including the iPhone XS, iPhone 12 mini, iPhone 13 mini, iPhone SE second and third generation, and iPhone 16e do support it in those markets.

US market iPhone 14 and later models are eSIM-only, meaning they have no physical SIM tray at all. The iPhone 17 Air, released in 2025, is eSIM-only worldwide and is Apple's first globally eSIM-only device.

Samsung Compatibility

Samsung supports eSIM across the Galaxy S series, the Galaxy Z series foldable devices, and select Galaxy A series models. As with iPhone, models purchased for the Chinese domestic market typically do not support eSIM regardless of the model name. If you purchased your Samsung device in China or as a Chinese market variant, verify your specific model number before purchasing an eSIM plan.

Google Pixel Compatibility

Every Google Pixel from the Pixel 3 onwards supports eSIM. This includes all Pixel 4, 5, 6, 7, 8, 9 and 10 models. US market versions of newer Pixel models are eSIM-only.

Other Android Devices

eSIM support on other Android manufacturers varies significantly by model and by the market the device was sold in. Motorola supports eSIM across several Razr and Edge series models. Huawei supports eSIM on select premium models. Xiaomi, Honor and Realme models sold in China typically do not support eSIM. If you use a device from a manufacturer not listed above, check the official specifications page for your specific model number and region before purchasing an eSIM plan.

The Unlocked Device Requirement

Even if your device supports eSIM, it must be network unlocked to use a plan from a different carrier. A carrier-locked device can only use eSIMs from the carrier it is locked to. If you purchased your phone directly from the manufacturer rather than through a mobile carrier on a contract, it is almost certainly unlocked. If you purchased it on a contract plan, contact your home carrier to confirm before purchasing a Thai eSIM.