Tokyo, Japan – KDDI Corporation, Okinawa Cellular Telephone Company and Rakuten Mobile, Inc. today announced that the three companies have concluded a new roaming agreement as of April 2023.

In order to contribute to the promotion of fair competition among mobile network operators in Japan, KDDI committed to providing roaming services through its au network to Rakuten Mobile from the launch of fourth generation (4G) mobile communication service until the end of March 2026. As Rakuten Mobile has expanded its own 4G network area to achieve 98% population coverage*1 since its full-scale commercial launch in April 2020, KDDI and Rakuten Mobile came together to review their roaming agreement.

Under the new agreement, KDDI will provide roaming services to Rakuten Mobile in areas not covered by the previous roaming agreement including select high-traffic shopping districts in Tokyo’s 23 wards and the cities of Osaka and Nagoya, as well as continue to provide roaming services for select indoor locations (subways, underground shopping centres, tunnels and other indoor facilities) and rural areas. The new roaming agreement comes into effect in June 2023 and extends to September 2026*2.

Utilising these roaming services allows Rakuten Mobile to provide subscribers with a more convenient service by improving network connectivity rapidly and efficiently, while at the same time limiting its financial burden. Additionally, by promoting the shared use of its infrastructure, KDDI will drive both the effective use of its 4G infrastructure and the rollout of its 5G network.

*1 As of the end of October 2022. Source: Rakuten Mobile.
*2 Further extension of the roaming provision period will be decided based on discussions between both companies.