KDDI Corp., one of Japan's top three carriers, said Saturday its mobile customers have been facing difficulties making calls and getting online for over half a day, with the disruption of its nationwide networks also impacting services from banking and transmission of weather data to parcel deliveries.The "au" mobile brand operator said work to restore the networks continues after the disruption began at around 1:35 a.m., but no time frame for a resumption of services has been provided.The trouble, which the company said is due to a failure with its voice call system, has also affected its …READ FULL ARTICLE