As of 2015, there are three major telecoms that offer mobile connectivity for tourists. The companies with the broadest country-wide coverage are DTAC and AIS. 4g is starting to roll out in major cities, with 3g already blanketing the cities as well as some islands. Most data plans are cheap and unlimited; they give a certain amount of ‘high speed’ data before delivering data at slower speeds. A passport or other form of identification is required to purchase a sim card.
Top Prepaid SIM options
Cost: Sims cost around 50 Baht ($1.50 USD), Cheapest Data Plan is 49 baht ($1.50 USD) and comes with unlimited data for one day, or 399 baht ($12 USD) monthly Link
Cost: Start at 49 Baht ($1.50 USD) for a tourist SIM, Cheapest Data Plan is 49 baht ($1.50 USD) and comes with unlimited data for one day, or 399 baht ($12 USD) monthly Link
Cost: Sims cost around 50 Baht ($1.50 USD), Cheapest Data Plan is 89 baht ($2.70 USD) and comes with unlimited data for one week, or 249 baht ($7.50 USD) monthly Link
Where to Buy: Anywhere
Call for Information: 1133
Call for Emergency: 1155
