Japan’s largest mobile operator said it plans to launch Voice over LTE (VoLTE) in late June. Callers will be able to make HD voice calls simultaneously with a data connection, according to reports.
Four smart phones and two tablets offered by the carrier will be able to conduct VoLTE calls after a software upgrade scheduled in or around late June.
Data charges for VoLTE-based video calls will be offered free of charge until September 2015, after which those calls will incur both voice and data charges.
This week marks the second major carrier to officially commit to VoLTE deployment this week. AT&T announced it will roll out VoLTE in four markets on May 26.