KDDI CORPORATION

KDDI is one of Japan’s leading telecommunications providers, serving approximately 90 million
customers. Our commitment to communications quality—the core of our business—has earned
us the top spot in the Opensignal Japan Mobile Network Experience Awards* for three
consecutive terms (the most awards won over three consecutive terms). Building on this “power
to connect,” KDDI is expanding into non-telecommunications sectors such as finance and
energy within Japan, while globally expanding our connected business and data center business
outside Japan. KDDI will continue to evolve this world-class “power to connect” by combining it
with AI and cutting-edge digital technologies to deliver new value to people’s daily lives.

* Opensignal Awards: Japan Mobile Network Experience Report (October 2024, April 2025, October 2025) comparing Japan’s four major MNOs