The licence allows the military-run company to launch 5G services in two of Vietnam's largest cities - Hanoi and Ho Chi Minh City - on a trial basis, the ministry said.

The company is not permitted to collect fees from its 5G users during the trial period, which will end on Jan. 21, 2020, according to the statement.

The company had earmarked $40 million for the development of its own 5G chipset, but was also considering using technology from Ericsson and Nokia, Viettel's President and Chief Executive Officer Le Dang Dung told Reuters in an interview earlier this month.

The company, formally known as Viettel Group, has about 60 million subscribers in Vietnam and over 30 million users across 10 other countries - predominantly Asia and Africa.

(Reporting by Khanh Vu, Editing by Sherry Jacob-Phillips)