S-Fone is one of Vietnam’s largest telcos and the pioneer of CDMA in the country. The company has become embroiled in a bitter war for market share with rivals VinaPhone, MobiFone and market leader Viettel. All have been offering heavy discounts and promotions in a bid to win new customers.
S-Fone has pitched the account every year in recent years, and the business has always been retained by JWT. The previous incumbent was Saatchi & Saatchi.