Should I buy an eSIM instead?

Yes, if your phone supports it, use apps like Airalo or Nomad. You can buy the eSIM before you land and activate it the moment the plane touches down, skipping the kiosk lines entirely.

Which provider is best?

AIS has the widest coverage, especially in remote areas. DTAC and TrueMove are perfectly fine and often offer slightly cheaper deals for tourists in Bangkok.

Can I top up my data in the city?

Yes. Visit any 7-Eleven store in Bangkok. Tell the clerk your provider and show them your phone number; they will add credit instantly.

Buying a Prepaid SIM Card in Bangkok

Buy your SIM card directly at Suvarnabhumi (BKK) or Don Mueang (DMK) airport arrivals hall to get set up immediately. Choose one of the three major providers—AIS, DTAC, or TrueMove—for reliable 5G coverage throughout the city.

Locate the official carrier kiosks. After passing immigration and baggage claim, walk toward the exit. You will see bright, branded kiosks for AIS, DTAC, and TrueMove. Do not buy from unofficial third-party resellers in the city center if you want the best tourist packages.
Choose your tourist package. Ask for a 'Tourist SIM.' They typically offer 8-day, 15-day, or 30-day unlimited data packages. Prices range from 300 to 600 THB depending on the duration.
Present your passport. Thai law requires registration of all SIM cards. Hand your passport to the staff; they will scan it, register the card to your name, and insert/activate it in your phone immediately.
Verify before leaving. Turn your phone off and back on while at the counter. Ensure you have a 5G or 4G signal and can load a web page before you walk away.

Should I buy an eSIM instead?: Yes, if your phone supports it, use apps like Airalo or Nomad. You can buy the eSIM before you land and activate it the moment the plane touches down, skipping the kiosk lines entirely.
Which provider is best?: AIS has the widest coverage, especially in remote areas. DTAC and TrueMove are perfectly fine and often offer slightly cheaper deals for tourists in Bangkok.
Can I top up my data in the city?: Yes. Visit any 7-Eleven store in Bangkok. Tell the clerk your provider and show them your phone number; they will add credit instantly.