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au Flat Plan 30

New applications are no longer accepted as of June 30, 2019

Perfect amount
of data!

¥6,000/month for up to a year (20GB)～
(from the second year:¥7,000/month～)
When au Flat Plan 30 (Simple), 2-year contract(★1), au Smart Value, Smartphone Support Discount are applied
※Calling charges, fixed line communication service charges and other charges are incurred separately.
au Smart Value ＞

au Flat Plan is a flat rate plan for 4G LTE smartphones for users that use a lot of data.

Image of au Flat Plan payment

When au Flat Plan 30 (Unlimited Calling Plan S) + 2-year contract + au Smart Value + Smartphone Support Discount are applied

Monthly charge

Smartphone Support Discount

If you simultaneously subscribe to au Adjust Plan (Super Kakeho/Kakeho), au Adjust Plan (Super Kakeho/s), au Adjust Plan (Super Kakeho/s), au Flat Plan 5 (exclusive for student discount), au Flat Plan 20, au Flat Plan 25 NetFlix pack, au Flat Plan 30*1 when changing models or making a new contract, you will receive a discount of \1,000/month for 1 year (\12,000 total) from the usage fees starting from the following month.

Service starting date: June 1, 2018 (there is no deadline to apply. Notification of any changes are provided in advance.)

  • Customers to whom the Smartphone Support Discount and Big News Campaign (for which applications are no longer accepted) have been applied in the past will no longer be eligible.
  1. If subscribed to au Flat Plan (Simple): Customers for whom Smartphone Support Discount is applied after September 14, 2018 are eligible. If you have previously applied Smartphone Support Discount and change your plan to au Flat Plan (Simple), the discount will end at the end of the month of application.
Click here for detailed precautions (in Japanese only)

Application

Required

Eligible models

4G LTE smartphone , AQUOS K SHF31, iPhone (excluding iPhone 4s)

Data amounts and 3 types of selectable plans based on voice calling style

au Flat Plan

(Unlimited Calling Plan S)

au Flat Plan

(Unlimited Calling Plan)

au Flat Plan

(Simple)

Unlimited domestic voice calls 24 hours a day! [1] (up to 5 minutes)

  • When 2-year contract + Family Discount are applied, voice calls between family members are free. [2]

Unlimited domestic voice calls 24 hours a day! [3]

Pay only the amount used for domestic voice calls

  • Domestic voice calling charge of ¥20/30 seconds [4] is separately incurred.
  • When 2-year contract + Family Discount are applied, voice calls between family members are free. [2]
  1. ◎For au Flat Plan (Unlimited Calling Plan S), you can make unlimited domestic voice calls that last up to 5 minutes. If a voice call is longer than 5 minutes, a separate calling charge of ¥20/30 seconds is applied to the portion that exceeds 5 minutes.

    ◎Does not apply to some voice calls, even if the call is within 5 minutes.

    Click here for other precautions
  1. When 2-year contract (Smile-heart Discount or 2-year contract(No automatic renewal)) + Family Discount are applied, calls made to family members who are subscribed to the same Family Discount are free.
  2. Does not apply to some voice calls.
  3. Voice calls to ship satellite phones are ¥50/30 seconds. Also, calls to phone numbers that are charged by other carriers incur the specified voice calling charge.

[Domestic SMS] Sending: ¥3/mail (up to 70 characters) | Receiving: Free

  • Depending on the model, up to 670 double-byte characters can be sent and received. However, a transmission charges are incurred in the form of 2 mails for up to 134 characters and 1 mail for each subsequent amount of 67 characters.

Image of a monthly payment

au Flat Plan (Simple)

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Monthly data amount

au Flat Plan 30(30GB)

Total payment

for one year【Ⅰ･Ⅱ･Ⅲ】
(from the second year)

¥6,000/month~
(¥7,000/month~)

Breakdown

I:Usage fee [7]

When 2-year contract ★1 is applied

¥8,000/month

When 2-year contract(No automatic renewal) ★2 is applied

¥8,300/month

When not subscribed to a discount for continuous usage

¥9,500/month

Ⅱ:au Smart Value★3

-¥1,000/month permanently

Ⅲ:Smartphone Support Discount

from the month following subscription
-¥1,000/month for up to a year

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  • When subscribed to this rate plan, Monthly Discount is not applied

[7]The total amount for au Flat Plan (1) basic charge + (2) LTE NET + (3) data flat rate . Breakdown:

(1)< ¥980/month (when 2-year contract is applied)><¥1,280/month (when 2-year contract(No automatic renewal) is applied)><¥2,480/month (when not subscribed to a discount for continuous usage)>

(2)< ¥300/month>

(3)< ¥4,720/month (20GB)><¥6,720/month (30GB)>

au Flat Plan (Unlimited Calling Plan S)

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Monthly data amount

au Flat Plan 30(30GB)

Total payment

for one year【Ⅰ･Ⅱ･Ⅲ】

¥6,500/month~
(from the second year :¥7,500/month～)

Breakdown

I:Usage fee [5]

When 2-year contract ★1 is applied

¥8,500/month

When 2-year contract(No automatic renewal) ★2 is applied

¥8,800/month

When not subscribed to a discount for continuous usage

¥10,000/month

Ⅱ:au Smart Value ★3

-¥1,000/month permanently

Ⅲ:Smartphone Support Discount

from the month following subscription

-¥1,000/month for up to a year

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  • When subscribed to this rate plan, Monthly Discount is not applied

[5]The total amount for au Flat Plan (1) basic charge + (2) LTE NET + (3) data flat rate . Breakdown:

(1)< ¥1,480/month (when 2-year contract is applied)><¥1,780/month (when 2-year contract(No automatic renewal) is applied)><¥2,980/month (when not subscribed to a discount for continuous usage)>

(2)< ¥300/month>

(3)< ¥4,720/month (20GB)><¥6,720/month (30GB)>

au Flat Plan (Unlimited Calling Plan)

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Monthly data amount

au Flat Plan 30(30GB)

Total payment

for one year【Ⅰ･Ⅱ･Ⅲ】

¥7,500/month~
(from the second year :¥8,500/month～)

Breakdown

I:Usage fee [6]

When 2-year contract ★1 is applied

¥9,500/month

When 2-year contract(No automatic renewal) ★2 is applied

¥9,800/month

When not subscribed to a discount for continuous usage

¥11,000/month

Ⅱ:au Smart Value ★3

-¥1,000/month permanently

Ⅲ:Smartphone Support Discount

from the month following subscription

-¥1,000/month for up to a year

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  • When subscribed to this rate plan, Monthly Discount is not applied

[6]The total amount for au Flat Plan (1) basic charge + (2) LTE NET + (3) data flat rate . Breakdown:

(1)< ¥2,480/month (when 2-year contract is applied)><¥2,780/month (when 2-year contract(No automatic renewal) is applied)><¥3,980/month (when not subscribed to a discount for continuous usage)>

(2)< ¥300/month>

(3)< ¥4,720/month (20GB)><¥6,720/month (30GB)>

Inquiries

Inquiries by Phone

Please call our Customer Service Center with your inquiries.

Click here for details

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

Notes

★1: 2-year contract 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).
★2: The month following the month of application is counted as the first month, and a contract cancellation fee (¥9,500) is incurred if the contract is cancelled within 2 years.

The following discount services also apply.

  • Monthly basic charge when Smile-heart Discount is applied...-¥200/month from when 2-year contract is applied
2-year contract
2-year contract(No automatic renewal)
Smile Heart Discount (in Japanese only)

★3: The discount is applied from the month following the month in which an application for au Smart Value is made.

au Smart Value

[About Unlimited Calling Plan S and Unlimited Calling Plan voice calls]

  • 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. Calls to some of the telecommunications carriers and calls that exceed 744 hours per month may be charged. Also, international calls and calls made to and from overseas are not applicable. In addition, flat-rate voice calls with this plan may not apply in the following situations.
    • 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
  • A calling charge of ¥20/30 seconds is incurred for domestic calls that are not eligible for free calls if other carriers do not set their rate (Satellite calls to ships incurs a charge of ¥50/30 seconds).
  • Calling charge discounts that are provided by "2-year contract (Smile-heart Discount or 2-year contract(No automatic renewal)) + Family Discount" or "au → My Home Discount (if free)" are applied. Calling charge discounts that are provided by "au → My Home Discount (50% discounts)", "Smile-heart Discount", and other discount services are not applied. Calls that exceed 5 minutes incur a calling charge of ¥20/30 seconds.
  • 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.
  • Numbers that are specified by KDDI (such as the ones that are connected when using a telephone service provided by a carrier other than KDDI, and the ones that are continuously connected for a specified period for long-term or multiple communications due to a call that originates by a mechanical nature) are not eligible for flat-rate calls.
Click here for the numbers that are not eligible for flat-rate calls (in Japanese only) (26KB)

[About data communication]

  • If using World Data Flat, the data amount is consumed from the monthly data amount of the domestic data flat rate service. If using Two-step data flat for Overseas, charges are incurred for communications used overseas. Does not apply to use of domestic monthly data amount.
  • au Flat Plan is not eligible for Data Gift or Long Term Hospitality Data Gift.
  • If applying for the Tethering Option, the monthly charge is ¥500 per month.
  • Can also be used without applying for the au Wi-Fi SPOT (usage charge is free).

[About au Flat Plan charges]

  • Contracts for prepaid phones are not eligible.
  • Safety Access Service / Restriction on Web Use are not available. Customers using these services must terminate the service (at au shop / au Style). Use Security Filter for au.
  • If applying when making a new subscription or switching models, the rate plan becomes applicable from the date of subscription or the date of switching models (the basic charge/Flat-rate data charge is prorated). If changing the contract or switching to a model you bring to a shop, the service becomes applicable from the month following the month of the change or switch.

    If you cancel in the middle of a month, the basic charge is not prorated and the flat rate is incurred.

  • With the au Flat Plan, Monthly Points (the service that awards 10 points for every ¥1,000 spent on au mobile phone usage fees, etc.) is integrated into au STAR Benefit Points. Points will only be awarded for au STAR Benefit Points. You must be a registered au STAR member to receive points.
  • Free call allowance in this plan is not eligible for sharing.

[Restrictions of communication speed]

  • If the total amount of communications of the month exceeds the data quantity for that month, the maximum communications speed for sending and receiving until the end of that month will be 128 kbps. (The communications speed constraint will be removed on the first day of the following month.)
  • Data amounts purchased with a data charge can be used without communication speed restrictions.
  • To avoid network congestion, a limit may be placed on the communication speed for a whole day if the total amount of communication used exceeds 6GB over the three most recent days (not including the day on which the restriction is applied). The restricted speed will differ depending on data traffic conditions.

    (The restriction applies regardless of the remaining data amount.) 

  • Regardless of whether you are subscribed to a Flat-rate Data service, your line may be temporarily suspended if the cost of the packet communications you use becomes high.

[Communication amount notification]

  • If you exceed the use of a determined communication amount in a month and you are nearing the communication speed restriction, you will receive a notification to the e-mail address registered to your au ID.
  • Details may change depending on the application period.
  • This service may not be available in combination with certain KDDI deals.
  • Calling charges, communication charges, option charges, the universal service fee, and other charges are separately incurred.
  • Please check at your local au shop / au Style for the costs involved with the contract.
  • iPhone is trademarks of Apple Inc., registered in the U.S. and other countries.
  • The iPhone trademark is used under license from AiPhone Co., Ltd.

Related Information

Upgrade Program

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