Rakuten Mobile submitted a report to the Ministry of Internal Affairs and Communications on the 4th, which summarizes the detailed causes and scope of impact of the mobile phone communication failure that occurred last month.
On the 4th of last month, Rakuten Mobile experienced a communication failure that made it difficult to use calls and data communications for more than two hours nationwide.
According to the summary of the report submitted by the company to the Ministry of Internal Affairs and Communications, about 110,000 people had difficulty using voice calls, and about 1.3 million people had difficulty using data communications.
Also, as for the cause, a software problem occurred at Rakuten Mobile's data center, and when some equipment was automatically restarted, "congestion" occurred, in which communication accesses from terminals were concentrated. That's what I'm saying.
Emergency calls such as 119 and 110 have also been affected by this failure, and the Ministry of Internal Affairs and Communications has decided to consider necessary measures, including administrative guidance, as it falls under a "serious accident" stipulated by the Telecommunications Business Law. I'm here.
Rakuten Mobile commented, ``We deeply apologize for the inconvenience caused to our customers.