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IPv6 READY via IPv4

International Services

Use your au smartphone or mobile phone as is overseas!

Roaming in Japan

If you make a contract with the mobile phone of an overseas carrier, you can use au's domestic network by subscribing to the international roaming service provided by the overseas carrier.

  • * Limited to overseas carriers that have roaming agreements with KDDI.
    Click here for overseas carriers that have roaming agreements with KDDI

List of overseas roaming inbound carriers (in Japanese only)(277KB)PDF