Buying a prepaid SIM card in Thailand

If you travel to Thailand we recommend getting a local SIM card to avoid extremely high roaming costs.

There are three main mobile operators in Thailand:

  • AIS (GSM, LTE, VoLTE, ViLTE, VoWiFi)
  • TrueMove H (GSM, WCDMA, LTE, VoLTE, ViLTE, VoWiFi)
  • Dtac (GSM, WCDMA, LTE, VoLTE, ViLTE, VoWiFi)

There are also numerous resellers, but we recommend AIS for most foreign visitors as it offers great prices, has good coverage and SIM cards are very easy find and to buy. AIS also has a large network of WiFi hotspots that are almost everywhere in large cities.

In the recent time also Dtac seems to be more focused on tourists offering great packages and even directions where you can buy their SIM cards on most popular airports in Thailand, so make sure to check them out.

How to buy a SIM card in Thailand

Thailand is extremely popular among tourists so you can buy a SIM card in Thailand almost on every street corner, shop or gas station. On airports there are also SIM card booths where you can purchase your card.

However, the registration of the SIM card in Thailand is mandatory. Registration can be done in the shop where you bought it. You need to provide a valid passport and a photo of yourself. The seller will likely take a photo of you with their smartphone and attach it to the registration application.

Network coverage

All mobile network operators in Thailand have good both voice and LTE coverage. You're most likely to stay within LTE range all the time unless you travel to really remote areas and islands of Thailand.


Competition between operators in Thailand is very stiff, therefore prices are somehow similar. It's always a good idea to check current promotions on the operator's website, however. Please check the links we've provided above.

How to top up

You can buy top-ups pretty much anywhere in Thailand, including mobile shops, supermarkets, gas stations and convenience stores. Just tell them the credit amount you want to purchase, your operator's name and they will issue a receipt with the top-up code and instructions how to redeem it.