Advanced Info Service Public Company Limited is Thailand’s largest GSM mobile phone operator with 35 million customers as of March 2013. Founded in April 1986, AIS started off as a computer rental business. In October 1990, it launched analog 900 MHz mobile phone services with a 20 year monopoly concession from the Telephone Organization of […]

This Thailand SIM card for the AIS 1-2-CALL network, comes loaded with 15 Baht of call time credit. Using this Thailand SIM card is about 85% cheaper for local and international calls compared to paying roaming charges from your home mobile network provider.