KDDI Corp. said Monday voice calls and data communications have almost been restored nationwide, nearly three days after maintenance work at the Japanese telecom giant led to disruptions on up to 39 million mobile connections and a range of business activities.The operator of the "au" mobile phone service is facing calls for compensation from customers, while the government is expected to take administrative measures to improve its businesses and prevent a recurrence. Shares of KDDI dropped nearly 4 percent at one point during the day's trading.The disruption, which occurred around 1:35 a.m…READ FULL ARTICLE