Viettel is one of the most popular Vietnam Telecoms that delivers its services to Vietnam. It is a pioneer operator who has started a telecommunications revolution in in Internet connectivity area in Vietnam. It's been operating since many years and it serves for all social classes and delivers Internet connectivity also to rural and remote areas. They offer cellular connections at high quality level.
Viettel offers data packages for those who would like to have as much data as they need the time they would like to use it. Dbiz15TT and Dbiz15 have 30 Mb a month to be used. It applies to both 2 forms prepaid and postpaid, no phone support, block charging: 10 + 10KB, speed: 2G, consistent with the POS device.