S-Fone is the fourth largest mobile communication operator in Vietnam that uses the CDMA technology. Founded on July 1, 2003, in Ho Chi Minh City, Vietnam, S-fone became the third network of Vietnam. It is the trademark of S-Telecom (CDMA Mobile Phone Center) (a joint venture between Saigon Postel Corp. and Korea SK Telecom). As of the start of 2005, breaking the old rule of the calls fee from 10 second to 1 second (6+1)7, S-Fone has 1,500,000 to 1,800,000 subscribers, contributing 3% to the total market (after Mobifone with 41%, Viettel Mobile with 34% and Vinaphone with 20%.

Achievement

S-Fone is the first and biggest national cellular mobile phone network using CDMA in Vietnam (followed by EVN Telecom and HT Mobile). On October 9, 2006, S-Fone officially launched CDMA 2000 1x EV-DO value added services for the first time in Vietnam: VOD/MOD (Video, TV on demand, music on demand) and mobile Internet (enabling internet access for PCs and laptops via S-Fone network) beginning in Ho Chi Minh City, Hanoi, Da Nang, Hai Phong and Can Tho.

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