Information for International Calls
In addition to cheap international calls via VoIP services such as Jajah and Skype, inexpensive international calls are available from mobile operators in Singapore. Different mobile operators offer free international calls to different destinations, meaning the charges are for local airtime only. Prepaid SIM cards for Singtel, Starhub and M1 are sold in convenience stores such as 7-eleven. Passport is required to purchase a SIM card.
Free calls to Bangladesh, Brunei, Canada, China, Hong Kong, India, Laos, Macau, Malaysia, Puerto Rico, Russia, South Korea, Taiwan, Thailand, USA (states in USA only, including Alaska and Hawaii). Other international call rates and details are available from Starhub website.
Free calls to Bangladesh, Brunei, Canada, China, Hong Kong, India, Malaysia, Puerto Rico, South Korea, Thailand, USA. More details available from Singtel website (http://home.singtel.com/upload_hub/consumer/faqFIDD24mar.htm). Information on other prepaid SIM cards is available from Singtel website.
Mobile One (M1)
Free calls to India, Macau, Bangladesh, Brunei, China, Vietnam, Malaysia, Australia, Thailan, Laos, Hong Kong, New Zealand, Taiwan, Puerto Rico, USA, Russia, Canada, United Kingdom, South Korea. Other international call rates and details are available from M1 website.