Source: China News Network
According to Reuters, on the 19th local time, Digicel, a telecommunications service provider in Tonga, said that the company's international call service has been restored.

On January 14, 2022 local time, an undersea volcano erupted in the South Pacific island nation of Tonga.
On the other hand, due to damage to submarine cables, internet connectivity can take weeks or longer to recover.
On the 14th and 15th local time, the submarine volcano of Aha Apay Island in Tongahun erupted violently for two consecutive times and caused a tsunami, which once caused the country's network, telephone and power to be interrupted. Some experts believe that this may be one of the most energetic volcanic eruptions of the 21st century.