A power-related fault has occurred on the APG submarine cable, affecting international internet connectivity.
According to information from Taiwan, the APG (Asia-Pacific Gateway) submarine cable recorded a power fault on 19 October, in segment S3 about 66 km from Shanghai (China). The problem caused some disruption to internet connectivity in Taiwan. In Vietnam, an ISP (internet service provider) also confirmed the report.
The technical team responsible has quickly started repair work, but has not yet given an estimated recovery time.
In January and July this year, the APG submarine cable also had problems that affected internet connectivity from Vietnam to the world. Information from an ISP in July said that by October this cable would return to normal operation at its designed capacity.
Vietnam currently has 6 submarine cables: IA, AAE-1, APG, AAG, SMW-3 and ADC (which came into operation in mid-April 2025). The ADC segment connecting to Vietnam has a capacity of 50 Tbps, making it the largest line and equal to 125% of the total previous international connection capacity across the submarine cables. The ADC line directly connects three Asian internet hubs – Singapore, Japan and Hong Kong – and has investment and cooperation from a Vietnamese carrier.
In August, Vietnam also officially added a terrestrial fibre-optic line owned by a domestic company. Recently, Vietnam has continuously upgraded its internet infrastructure with the goal of having 15 submarine cables by 2030, of which up to 7 are expected to be in operation in 2025.
— Source: Thanh Nien —
