The company said data transmission had largely been restored by Monday morning, but service restrictions were still causing many users to have trouble with making phone calls and sending short messages.
The outage started in the early hours of Saturday during a scheduled maintenance work at a facility in western
It disabled text messaging, phone calls and other services for more than 39 million users of KDDI’s mobile services. Parcel deliveries also were disrupted.
Over the weekend, the
The major outage came just ahead of a
The government was quick to address public concern over the problem.
“It is extremely regrettable that mobile phone service, which is a crucial infrastructure for social and economic activity, has been unusable for such a long time," Deputy Chief Cabinet Secretary
He said the government was taking the situation “seriously” and urged KDDI to provide a thorough explanation. Kihara said he expected KDDI to “sincerely” consider compensation for possible damage claims from users.
On Sunday, KDDI President
“We consider this a severe incident,” Internal affairs and communications minister
An outage last year by rival
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