Staying connected in Thailand is easy. The main mobile networks are AIS, True (including the former TrueMove H brand), and NT (National Telecom; many shops still display the legacy dtac branding after the True–dtac merger). Tourist SIMs and eSIMs are sold at international airports, operator shops in malls, and convenience stores (7-Eleven often stocks True and AIS packs).

Thailand’s telecommunication providers

• AIS (Advanced Info Service) : Known for its nationwide coverage and fastest speeds, AIS is a popular choice among users in Thailand. AIS offers a variety of prepaid and postpaid SIM card options.
• TrueMove H : Provides reliable network coverage along with impressive speeds. If you prioritize fast internet, TrueMove H is an excellent choice.
• NT (dtac) : Competitive prepaid data; dtac merged into True Corporation in 2023, with consumer mobile increasingly under NT/dtac branding.

Tip: For coverage in remote islands or mountains, AIS is often strongest; in cities, all three work well. Compare tourist packs by data volume and validity (7–30 days).

Places to buy SIM Cards

• Airports: You can find SIM cards from all major providers at all airports in Thailand.
• Convenience Stores: Stores like 7-11 typically sell SIM cards, although they mostly offer TrueMove H.
• Telecommunication Service Centers: These are often located within shopping malls.

Average call costs in Thailand

Call Costs:

• Within Thailand: 0.50 - 3 THB per minute.
• International Calls: 3 - 30 THB per minute.

SMS Costs:

• Local SMS: 2 - 3 THB per message.
• International SMS: 3 - 10 THB per message.

Internet Data Costs:

• Daily Data Packages: 10 - 50 THB.
• Weekly Data Packages: 50 - 150 THB.
• Monthly Data Packages: 150 - 1000 THB.