Viettel, which is owned and run by Vietnam’s military, is looking to invest in at least three African countries this year including Tanzania and Kenya in East Africa, Mobile World Live reported.

The operator plans to invest $736 million in a 3G network in Tanzania and was at the end of last year linked to acquiring a controlling stake owned by France’s Orange in Telkom Kenya.

Viettel, which already operates in 10 African countries, is expanding its footprint across the world and plans to enter four countries this year, three of which are in Africa.

It already operates in Mozambique, Cameroon and Burundi.

Africa’s fast growing mobile phone subscription rate is expected to slow down to an average of 6 percent  between 2015 and 2020, which would add 135 million more subscribers on the continent.

Apart from Africa, the Viettel has established its footprint in Asia and Latin America, serving over 170 million people. It plans to become one of the top telecoms group in the world in the next five years.

“The goal is that by 2020 Viettel will become a global corporation and among the 10 largest telecom companies in the world,” Tong Viet Trung, vice president of Viettel, said.