Viettel has been ranked in the top 10 mobile operators with the most new subscribers in the first quarter this year, according to a report by GSMA Wireless Intelligence.
Viettel surpassed Singapore's SingTel and Axiata of Malaysia and ranked only after network operators in India and China.
As a leading provider of telecommunications services in Vietnam, Viettel has invested both domestically and internationally in countries such as Cambodia, Laos, Haiti, Peru and Mozambique with a revenue of nearly US$6 billion last year.
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