This is the result of the statistics taken from millions of Vietnamese Speedtest users in the last two quarters of 2018.
Speedtest by Ookla, the most popular tool in the world to test the speed and performance of internet connections, normally release its ranking list for many countries twice a year.
In February 2019, Speedtest announced the ranking on 3G/4G connection speed among Vietnamese network operators. This ranking is made thanks to the data from Speedtest users in the third and fourth quarters of 2018, taken in the event of Mobile World Congress in Bacelona of Spain. Accordingly, VinaPhone is considered by Vietnamese customers as the fastest 3G/4G network provider.