eSIM or a SIM card for Thailand: which fits your trip
Both get you online in Thailand. They differ in where you buy them, what you show, and when they start working.
- No shop visit
- Passport needed for a SIM
- A Thai number where stated
The short answer
An eSIM from this site installs at home and gets you online after landing, with no shop visit. A SIM card bought in Thailand is registered at the point of sale, with your original passport, and it gives you a Thai number; whether an eSIM plan includes one is stated on the plan before you pay.
Checked October 2, 2026
eSIM against a SIM card bought in Thailand
Where you buy it
- eSIM from this site
- Online, before you fly
- A SIM card bought in Thailand
- At an airport counter or a shop in Thailand
What you show
- eSIM from this site
- Nothing
- A SIM card bought in Thailand
- Your original passport; registration happens at purchase
Network
- eSIM from this site
- The Thai network named on your plan
- A SIM card bought in Thailand
- Whichever network's counter or shop sells it to you
Phone number
- eSIM from this site
- Data only, unless the plan says it has a Thai number
- A SIM card bought in Thailand
- A Thai number
Your own number
- eSIM from this site
- Stays on in the phone
- A SIM card bought in Thailand
- Stays on, but only if the phone holds two SIMs
Refund
- eSIM from this site
- A full refund when it does not work and cannot be fixed
- A SIM card bought in Thailand
- The shop's rules
When a SIM card makes sense
A SIM card bought in Thailand runs on one of Thailand’s three networks: AIS, TrueMove H or NT. It gives you a Thai number, and packages are sold on the spot. Registration happens at purchase, and the shop asks to see your original passport.
When the eSIM makes sense
Your phone carries the eSIM before you board, so no shop and no queue await after the flight. After landing you switch it on and set it for mobile data, while your usual SIM stays in the phone for calls and bank codes. When the line will not connect, enable data roaming on the eSIM line: the store names this switch as the fix for a line that will not start.
The plan for this trip
Lowest price per day for trips of 8 to 15 days
10 days · 50 GB · US$9.88
Data only, tax included. Each plan names its Thai network before you pay.
Buy on VietSIMQuestions
Do I need a Thai phone number?
Only if you need to receive Thai calls or texts. Whether a plan includes a Thai number is stated on the plan before you pay; where it does not, WhatsApp keeps your own number and your usual SIM stays in the phone for calls and bank codes.
Do I need my passport to get online in Thailand?
For a SIM card, yes: registration happens at the point of sale, with your original passport. The eSIM is bought online before you fly and installed from the QR code shown right after payment; keep the page link, because your code lives there.
Sources
Where the facts on this page come from.
Get your Thailand eSIM before you fly.
Plans from US$4.88, tax included, on dtac, True or a Southeast Asia regional network. Pick one here and pay on the store in US dollars.
See the plansCheckout on VietSIM · full refund if it does not work