About Thailand
Thailand spans Bangkok's markets and temples, the beaches of Phuket and Koh Samui, and the mountains around Chiang Mai. Ride-hailing apps, translation, and checking reviews before eating are all part of daily travel here, so reliable mobile data is one of the most useful things to have sorted before you land.
Frequently asked questions
Can I buy my Thailand eSIM now and activate it later?
Yes. Buying and installing your Telisco eSIM doesn't start the clock - for most plans, the validity period begins when the eSIM first connects to a network in Thailand. Install it while you still have Wi-Fi at home, then just turn on data roaming when you land.
How do I activate my eSIM in Thailand?
Right after checkout we email your eSIM and installation instructions. You install it by tapping the link in that email, then turn on data roaming for that eSIM once you arrive in Thailand. You can also find it any time in My account.
Which network will my eSIM connect to in Thailand?
Your Telisco eSIM uses local partner networks in Thailand, and your phone decides which one it sits on. The networks each plan uses are listed on the plan itself, under Plan details. Usually the phone chooses well, but if data feels slow you can pick a network yourself: on iPhone go to Settings > Cellular > your Telisco line > Network Selection and turn Automatic off, then choose from the list; on Android it is Settings > Network & internet > SIMs > your eSIM > Automatically select network.
My eSIM in Thailand is connected but the internet is slow. What can I do?
Start by turning Airplane mode on for 10 seconds and back off, and check that Data Roaming is on for the Telisco line and any VPN is off. If it is still slow, the usual cause is the phone sitting on a slower local network, so choose one by hand instead of leaving it on Automatic (iPhone: Settings > Cellular > your Telisco line > Network Selection; Android: Settings > Network & internet > SIMs > your eSIM > Automatically select network). Also check you are not locked to 3G: set Voice & Data to 5G Auto or LTE. Wait about 30 seconds after each change before testing. Please do not delete the eSIM, it will not help and most plans can only be installed once. If every network is slow it is the coverage where you are standing rather than the eSIM, and our team will troubleshoot it with the operator if you contact us.
Do I need to unlock my phone to use an eSIM in Thailand?
Your phone needs to be eSIM-compatible and carrier-unlocked. Most phones from the last few years qualify, including iPhone XS and newer, Google Pixel 3 and newer, and recent Samsung Galaxy models. On iPhone, check Settings → General → About for an EID number - if you see one, it supports eSIM.
Can I make calls or send SMS with my Thailand eSIM?
Telisco eSIMs are data-only. You can use internet while keeping your regular number active for calls and SMS on your primary SIM.
What if I run out of data in Thailand?
You can top up your existing eSIM in seconds from My account - no need to install a new one. The extra data is added to the same eSIM and available right away.
Telisco provides instant eSIM data plans for Thailand, eliminating the need for physical SIM cards. We offer a variety of data packages with different durations, allowing you to choose the plan that best suits your needs. Our eSIMs install in one tap from the link in your email, with nothing to type. We connect you to the strongest available local network in Thailand, ensuring seamless connectivity. Our data-only eSIMs allow you to use internet while keeping your regular number active for calls and SMS. Top up your existing eSIM in seconds if you run out of data.
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