KDDI Corp. said Monday its "au" mobile phone services experienced technical difficulties across Japan, causing disruptions to calls and internet connections for about three hours.The service disruption, which began at 7:18 a.m., initially affected 31 prefectures in western Japan, including Osaka, Kyoto and Fukuoka, before extending across the country.The services returned to normal around 10:11 a.m., according to KDDI, one of Japan's three major telecommunications carriers.The company said some services, particularly data communication, were impacted nationwide. The cause of the outage rema…READ FULL ARTICLE