China News Service, July 4th. According to comprehensive Japanese media reports, on the 4th local time, Japan's KDDI Company announced that as of 7:00 a.m., data communication services such as the Internet have "basically recovered nationwide".
KDDI's sudden communication failure on the 2nd led to continuous poor mobile phone calls and data transmission across the country, which had a huge impact on infrastructure such as mobile phones, logistics, and settlement.
According to reports, the fault lasted for more than 48 hours, and as many as 39.15 million lines were affected, of which 35.8 million were mostly personal and corporate mobile phone lines.
In addition, there are 1.4 million lines for affordable smartphone companies and 1.5 million lines for equipment in the logistics and financial industries.
The failure spread to Japanese banks, aviation, logistics, automobiles, electric power and other industries, and the delivery status system could not be updated, and ATM machines could not be used.
The Japan Meteorological Agency also stated that due to the instability of communication, hundreds of meteorological observation systems across Japan were unable to transmit information. Fortunately, it did not have a major impact on weather and typhoon forecasts.
According to reports, the accident occurred during the regular maintenance of the equipment.
While repair work was being carried out, there were cascading failures of other systems, making voice and data communication services difficult to use.
Japanese media said that the duration of the failure and the number of people affected exceeded that of NTT Como's mobile phone communication failure at the end of last year, and it was the largest in the history of mobile phone operators.
Japan's Minister of General Affairs Kyoyuki Kaneko said at a press conference on the 3rd that mobile communication services are important infrastructure for national life and social economy, and it is "very regrettable" that many users are in a state of being difficult to use for a long time.
Kaneko said the incident was a "major accident" under the Telecommunications Business Act, and criticized KDDI's response as "inadequate from the user's point of view."