Mobile phone calls eclipsed fixed-line calls for the first time ever in Japan last financial year.
According to recently released statistics from Japan's ministry of internal affairs and communications (MIC), mobile phone calls accounted for 44.8% of the total volume of telecommunications voice traffic in terms of hours spent on the phone.
Fixed-line calls - excluding VoIP, accounted for just 43.3%.
According to Japan Today, the previous year fixed line calls beat out mobile calls by 5.7%.
But last year aggressive moves from mobile operators to gain dominance in the market - such as offering a range of free call options - have proven successful.