Phone, internet, and messaging apps — how to stay in touch while traveling in Thailand.
Buy a local SIM at the airport (AIS, Dtac, True Move) for 50–100 THB, then load prepaid credit — much cheaper than roaming.
Free WiFi in malls, cafes, hotels, and most restaurants; speeds vary but sufficient for messaging and maps.
WhatsApp, Line, Telegram all work fine in Thailand — many Thais use Line for messaging.
WhatsApp or Skype calls work via WiFi; international calling cards available at 7-Eleven if you need voice calls.
