Vietnam’s burgeoning cellular market, having doubled in size to 22 million subscribers by the end of 2006, will double again to 44 million by the end of this year, according to telecom service providers. Currently the three GSM operators, Vinaphone, MobiFone and Viettel are said to hold 95% of the market with 19.7 million customers between them, whereas S-Fone and EVN Telecom, who operate CDMA networks, boast a joint total of 2.2 million. Another CDMA operator, Hanoi Telecom, is expected to launch services this month. Minister of Post and Telematics Do Trung Ta said that cellcos must concentrate not only on coverage but also quality, and in addition they must file quarterly figures showing their areas of coverage and number of subscribers. He warned that the Ministry would be keeping strict control over telecom fees, quality and promotional campaigns, saying that any provider offering services at below production cost would face a fine.