Viettel announced that it has officially became the first network operator in Vietnam to successfully test 5G Roaming service with LG Uplus – the Korea's second largest network by number of 5G subscribers.
In a pilot 5G roaming trial, the Operator recorded download speed of 72.4Mbps which is about 10 times compared to 4G/LTE Roaming (only 5-10 Mbps on average).
Viettel has also become the first network operator in Vietnam to successfully roll out VoLTE service with Roaming partners, to provide voice service over Data network on IMS (IP Multimedia Subsystem) technology platform, therefore user’s experience was enhanced by applying HD quality calls.
With the interworking connection with LG Uplus, voice connection time from Vietnam to South Korea was shortened to only 1-3 s, equivalent to only a fifth of connection time of normal voice call (8-10 s). Along with this technological upgrade, customers are able to enjoy high quality HD voice call as well as experiencing superior speed of 5G Roaming Data.
