If you need to contact the Thai mobile phone operator from abroad, use the international format Thai number. If you are in Thailand, you can dial the 4 digit help desk number. Calling the call center is useful for turning on / off your data plan, turning on international roaming or replacing a lost SIM card.

AIS SIM2Fly and 12Call Call Center

• +662-271-9000 (International AIS and SIM2Fly help desk)
• myAIS app - iOS - Play Store
• 1175 - Domestic Call Center
• 1148 - Serenade Call Center
• 1149 - Corporate services
• Facebook : aiscallcenter1175
• Facebook Messenger Chat
• callcenter@ais.co.th
• Contact Us Form
• Online Chat with AIS Aunjai
• AISCallCenter.ais.co.th
• Online portal services
• @12Call_Fan

DTAC and DTAC Happy Call Center

• +662-202-8100 ( as of aug 12 offline )
• +662-202-8686 - Good Business call center
• +662-202-8000
• 1678 - Domestic call center
• Line Messenger
• @dtac
• Facebook : dtac
• feedback@dtac.co.th
• Online portal services

True MoveH Call Center

• +668-9100-1331
• 1242
• Live Chat
• Contact Form
• @truemoveh
• @mytruemove

MyCat Call Center

• +662-401-2222
• @Line: my by Cat
• Facebook @mybycat

All call centers have English speaking staff.