Released Information

Security Portal

To ensure the safe use of our services by our customers, we have compiled a "Security Portal" that provides information on matters to be aware of when using our services and related security measures.

Security Policy

KDDI, having a mission to provide telecommunication services in a safe and stable manner, shall strive to earn the trust of its customers and related parties by handling of customer information and confidential corporate information securely as well as consistently taking appropriate precautionary measures against information leak risks. For this purpose, KDDI releases this "Security Policy" both internally and externally, and declares its intent to comply with this policy and the "Privacy Policy" (see separate document).

Privacy Portal

KDDI published the "Privacy Portal" to explain the Philosophy "how KDDI processes Personal Data" and "how customers can manage their own Personal Data" so that they can use safe Sercvices.

Privacy policy

KDDI is committed to acknowledging the importance of privacy and to observing the Telecommunications Business Law, Personal Information Protention Act, and other laws and regulations. We release our privacy policy and adhere to it, in order to attain strict compliance for the protection of privacy.

AI R&D and Utilization Principles for KDDI Group

Based on the international trends, KDDI Group will promote R&D and utilization of AI while suppressing risks, thereby enhancing customer experience value.

About Universal Service Fund System

Explanation of the 'Universal Service Fund System,' which stipulates that phone carriers shall bear any expenses necessary to enable a customer, in any household anywhere in Japan, to be able to fairly and safely use phone services that they have subscribed to.

About Telephone Relay Service Fund System

Explanation of the "Telephone Relay Service Fund System," which requires all telecommunications carriers to appropriately share any expenses necessary in order to ensure the provision of the "Telephone Relay Service" which will make use of operators to interpret sign languages and words and mediate communication between users who have hearing or speech disorders and users who do not.

About using phones after a disaster

The Council for Safety and Reliability of the Telecommunications Carriers Association (TCA) requests the understanding and cooperation of phone users concerning phone use after a disaster such as earthquakes and accidents to secure important public communication and to smoothly confirm the safety in the afflicted areas.

  • Link to Telecommunications Carriers Association (TCA) site

KDDI Group Sustainable and Responsible Procurement Policy

KDDI Group acknowledges its responsibility to take the initiative in working toward a sustainable society as a comprehensive telecommunications carrier that contributes to the development of a society characterized by enriched communication.
KDDI Group believes that all supply chains as well as KDDI Group itself must strive to fulfill this responsibility. Based on this concept, KDDI Group has published the KDDI Group Sustainable and Responsible Procurement Policy and the KDDI Group Sustainable and Responsible Procurement Guidelines.


This page describes information for manufacturers considering connectivity verification with the KDDI network.