Unlimited Calling Plan(Smart phone)(CP)

New applications are no longer accepted as of September 1, 2015

The plan is a flat-rate service for domestic voice calls that can be used in combination with LTE Flat.

Application Required
Application start date: July 1, 2014
(Application end date will be notified in advance)


Unlimited domestic voice calls 24 hours a day! [2] To au and other carriers' mobile phones and smartphones and fixed-line telephones! [1]
Monthly basic charge When 2-year contract (Everybody Discount) [3]is applied ¥2,700
Before application for various discount services ¥4,200
Domestic calling charge To au mobile phones Free [1]
To other carriers' mobile phones or landline
Data communications charge You can use LTE Flat (¥5,700/month).
Domestic SMS (C-mail) To au mobile phones Sending: ¥3/time
Receiving: Free
To other carriers' mobile phones and PHS
  • * LTE NET (¥300/month) or another internet connection service is required.
  • * When you subscribe to this plan, any currently applied discounts may be terminated. See below for details.

[Unlimited Calling - Domestic flat-rate voice call service]

  • [1]Flat-rate voice calls with this plan do not apply to voice calls to phone numbers starting with 0180, 0570 or other numbers that are charged by other carriers, voice calls to directory assistance (104), 1XY administration number services (188/189), SMS transmissions, voice calls to satellite phones/ship satellite phones, and voice calls to phone numbers that KDDI separately determines. Also, international calls and calls made to and from overseas are not applicable.
    In addition, calls that fall under the following situations and all the other calls made from that line are not covered by flat-rate voice calls with this plan, nor are any discount call services applicable other than this plan.
  • When using a mobile phone subscribed to this plan to connect to the customer's own communications equipment or to make an automatic call using software (except with the prior approval of KDDI in either case)
  • When using Unlimited Calling with the aim of gaining direct income from communications through communication mediation, use of the forwarding function or connecting to a service provided by another company
  • When using Unlimited Calling for purposes other than voice calls
  • [2]Should KDDI judge, for example, that a continuous call for a long period of time is affecting KDDI equipment, the call in question may be terminated.
  • [3]2-year contract (Everybody Discount) is automatically renewed in two-year units. In the case of contract termination, a contract cancellation fee of ¥9,500 is incurred (excluding the renewal period). Smile-heart Discount is also eligible. When Smile-heart Discount is applied, the monthly basic charge is ¥2,500/month.
  • * The basic charge discount with Family Discount is not applied.

Unlimited Calling can be combined with LTE Flat packet communications flat-rate service.
(It cannot be combined with the Flat-rate Data 2/3/5/8/10/13 service.)

Rate plan image
  • * Applications are accepted without subscription to LTE NET or LTE Flat.
  • [5]You can also use LTE NET for DATA.

Eligible models

  • 4G LTE (excluding au VoLTE) smartphone
  • iPhone (excluding iPhone 4S)

Universal service system

In accordance with the launch of the "Universal Service System", KDDI has begun imposing a "Universal Service Fee" on customers who signed contracts with us for their portion of usage since January, 2007.
See below for the details.

Universal service system


  • To apply for the Flat-rate Data 2/3/5/8/10/13 service, you must change your rate plan to the Unlimited Calling Plan(Smart phone). Application for the plan started on August 13.
  • If you apply for the Unlimited Calling Plan(CP) at the same time as applying for a new contract (including MNP) or model change, the plan will be applied from the day of subscription on a prorated basis. Also, if you change your rate plan, you can choose whether the plan is applied from the day of subscription or from the following month.
  • You can continue to use the Unlimited Calling Plan(CP) even after the launch of the Unlimited Calling Plan(Smart phone).
  • If you do not apply for LTE Flat, you will be subscribed to the Rated Plan (domestic communication charge ¥0.6/KB, maximum domestic communication charge of ¥20,000/month), and you will be billed for data communication charges according to the amount of data sent and received.
  • The basic charge for the month of cancellation is calculated on a prorated basis. If you are subscribed to 2-year contract (Everybody Discount) and cancel Unlimited Calling Plan(Smart phone)(CP) , calculation on a prorated basis is not applied and the flat rate is incurred.
  • By phoneOpen 9:00 – 20:00

    • English

      0120-959-472(Toll Free)

    • Portuguese

      0120-959-473(Toll Free)

    • Chinese

      0120-959-476(Toll Free)

    • Korean

      0120-959-478(Toll Free)

    • Tagalog

      0120-933-952(Toll Free)

    • Vietnamese

      0120-933-961(Toll Free)

    • Japanese
      about au mobile services

      157(Toll Free)from au phones

      0077-7-111(Toll Free)

      about Internet services
      Contract / Fee / Billing

      0077-7084(Toll Free)

      Connection setting / failure

      0077-777(Toll Free)