Viettel ranks first among four mobile service providers in terms of mobile service in September. Photo: vietnamplus

Viettel is followed by the other mobile service providers of the Vietnam Posts and Telecommunications Group (VNPT), Mobilephone Corporation, and the Vietnamobile Telecommunications Joint Stock Company.

Earlier, the Department of Telecommunications conducted a survey on the quality of mobile services in Lang Son province from September 14 to 20 and in Bac Giang province from September 21 to 27, and the rankings were based on six criteria. Viettel topped the list as it met all criteria of techniques, readiness of wireless services, and call quality. 

The results reflecting the technical quality of the mobile service providers in the surveyed localities were valid at the time of the survey.

Translated by Tran Hoai