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Items to prepare for MNP (Mobile phone Number Portability)

Rate plan change

Model changes

New contract

MNP

Switch to au from UQ or another carrier in two easy steps! You can keep using the same phone number as before.

Notes on MNP and switching from UQ to au

Before purchasing a new device, you need to transfer the data from your current device.

Click here for details on how to transfer data (in Japanese only)

If you are currently using an electronic certificate for smartphones on your device, you will have to go through the cancellation procedure (this procedure involves the deletion of the electronic certificate data) before you switch over to a new phone. Before initializing your device, please go through the necessary procedure, which you can access from your personal page on the Mynaportal app.

If you have any questions about the electronic certificate for smartphones, please call the My Number General Information Desk toll-free at 0120-95-0178 on weekdays from 9:30 a.m. to 8:00 p.m. or on weekends and holidays from 9:30 a.m. to 5:30 p.m.

Get an MNP reservation number from your currently contracted mobile phone carrier.

An MNP reservation number is not required when switching to au from UQ mobile (number transfer).

NTT docomo (including Disney Mobile)
PC website	My docomo (https://www.docomo.ne.jp/mydocomo/) → Log in Business hours: 9:00 - 21:30 Excluding mainte-nance downtime
Telephone	From a mobile phone: 151 From a fixed phone: 0120-800-000 Business hours: 9:00 - 20:00

SoftBank
PC website	SoftBank website → モバイル (Mobile) → サポート (Support) → 料金・ご契約関連 (Fees/Contract Information) → ご契約内容の確認・変更 (Check/Change Contract Details)
Yahoo! Keitai　ver	TOP → My Softbank → 各種変更手続き (Procedures for various changes) → MNP 予約関連手続き (Procedures concerning MNP reservations) Business hours: 9:00 - 21:30
Telephone	From a mobile phone: *5533 From a fixed phone: 0800-100-5533 Business hours (free of charge): 9:00 - 20:00

Y!mobile
PC website	TOP (https://my.ymobile.jp/muc/d/top) → My Y!mobile (Login) → 契約内容の確認・変更 (Check/Change Contract Details) → 携帯電話番号ポータビリティ (MNP) 予約関連手続き (MNP Reservation Procedure) Business hours: 9:00 - 21:30
Telephone	From a mobile phone: 116 From a fixed phone: 0120-921-156 Business hours: 9:00 - 20:00

This information is subject to change. For details, contact your mobile phone carrier.

≪Notes on using MNP≫

Once MNP is implemented, the contract with your current mobile phone carrier will be canceled and your new contract with the mobile phone carrier that you switched to will start.
Accordingly, please note the following points:

The email address issued by the currently contracted mobile phone carrier will no longer be available.
Services offered by the currently contracted mobile phone carrier (rate plans, discount services, etc.) will be terminated at the time of the cancellation of the contract.
In some cases, content and electronic money provided by content providers may not be transferred to the new mobile phone.
If you subscribe to discount services such as a yearly contract, additional costs may be incurred with the cancellation of the contract.
A mobile phone handset sold by the newly contracted mobile phone carrier may be required.
MNP is not applicable to services providing data communication only (Single Service).

As of April 1, 2021, the MNP withdrawal fee is free.

Bring your MNP reservation number and sign up for a new contract within 15 days.

Applying through the au Online Shop

Check below for details on how to apply through the au Online Shop. However, note that business customers and subscribers who are minors cannot apply through the au Online Shop and should instead apply at the nearest store carrying au products.

Visit the au Online Shop (in Japanese only)

Applying online is easy! Click here to check the procedure

For customers applying through au Online Shop

Adult subscribers can apply through the au Online Shop.

When applying through the au Online Shop, the user will need to provide one of the personal identification documents described on the page below.

In addition, paying by credit card is the only available payment method.

Applying at au Style / au shop

Applications for new contracts are accepted at any au Style / au shop or store carrying au products. The person whose name will appear on the contract must be present at the store when signing up.

Elderly customers are requested to come with a family member whenever possible.

If you come alone, you may be asked to call a family member from the store for verification.

Store Locator

Required fees

Contract fee: ¥3,850

(The amount will be added to your first phone bill.)

The contract fee is not incurred when switching to au from UQ mobile (number transfer).

(However, if you change models at the same time you switch, a fee for changing models is incurred.)
Payment for the phone and other purchased items

A deposit (a separately determined amount of no more than ¥100,000 (tax free) per contract, at no interest) may be required for a contract. In this case, the phone may not be purchased in installments. In addition, au Simple Payment cannot be used to purchase digital content, products, or other items.
If you change your model at the same time you switch from UQ mobile or povo to au, it will be handled in the same way as a model change for au customers.
The prices of au phones and optional products vary at stores carrying au products. For details on prices and availability, check with the store that you plan to visit.

Identification documents for subscriber

Make sure to bring the original documents.
(Driver's license, passport, etc.)

The personal identification document must include your name, date of birth, and current address, and it must be valid and within the expiry date.
You may be asked to present additional personal identification documents even if you present one of the personal identification documents below.
If the name on the new contract is different from that of the user, such as when a child applies to use an au mobile phone under the name of a parent, check the link below for details.

User Registration System (in Japanese only)
For customers without Japanese nationality who have a limited period of stay in Japan, a document verifying your period of stay and a credit card are required when applying for the Personal Credit Agreement. If the period of stay is shorter than the installment payment period, you may not be able to apply for the Personal Credit Agreement.

Subscriber	Identification documents for subscriber
Individual	Driver's license (Must be issued by Public Safety Commission. International driver's licenses are not accepted.)
	Passport (Japanese) Supplementary documents are required when presenting a passport without the "Information on Bearer" page (those issued after February 2020).
	Physical Disability Certificate or Rehabilitation Certificate or Mental Disability Certificate
	Special Permanent Resident Certificate
	Residence card (If there are less than 90 days remaining in the period of stay, a credit card in the name of the person on the contract must be used as the payment method for monthly charges. If the address is not specified on the front of the card (it is printed on the back of the card after it was issued), one of the supplementary documents listed below is required separately to verify the address.) + Foreign passport
	Individual Number Card (My Number Card) (au does not obtain or save your individual number. Individual Number (My Number) Notification Cards are not accepted.)
	Basic Resident Register Card (Only those with a photo are accepted.)
	Health insurance card As of June 1, 2023, no longer accepted as an identification document except for "minors under 18 years of age". (au does not obtain or save your insurer number, insurance code, or insurance ID number.)
Minor	Personal identification document listed above (Health insurance card + student ID are accepted. If the user is of elementary school age or younger, a health insurance card alone is acceptable.) + Parental consent form and filtering service application (The form must be filled out and stamped by a parent or legal guardian.) + Personal identification document of parent or legal guardian (The same personal identification documents for individuals listed above are accepted. However, a foreign passport is not required for persons with a residence card.) Minors must be accompanied by a parent or legal guardian when applying at the store. If the contract is for a person of elementary school age or younger, the contract will be in the name of the parent or legal guardian. Parental Consent Form and Filtering Service Application (in Japanese only)
Business	Certified copy of register or seal registration certificate (Within 3 months of effective date) + Personal identification document of person who visits store (The same personal identification documents for individuals listed above are accepted.) + Employee ID or business card

Supplementary documents

Have one of the supplementary documents listed below ready to present along with the required personal identification documents in the following cases:

When your current address is different from the address listed on your personal identification document.
When a Basic Resident Register Card or health insurance card is presented and the monthly charges are paid by a means other than a credit card in the name of the contract holder.

Supplementary documents	Notes
Utility bill receipt	The receipt must show your current address and must have been issued within the past 3 months (electricity, gas, water, etc.). If you bring a utility bill receipt because your current address is different from the address that is listed on your personal identification document, the name on the utility bill must be your name.
Certificate of Residence	The document must show your current address and must have been issued within the past 3 months. A Certificate of Residence cannot be used as a supplementary document when a Basic Resident Register Card is presented as personal identification.
Student ID	The ID must show your name and date of birth, and it must be valid and within the expiry date (only accepted in the case of a contract for a minor).

Application by a third-party agent

A third-party agent is not permitted to apply for a new contract on behalf of a subscriber. The person whose name will appear on the contract must sign up in person. (Except when applying for the Smile-heart Discount.)

Items required when setting up the payment method for monthly charges

(Credit card, cash card, etc.)

Subscriber

Items required when setting up the payment method for monthly charges

Individual

[Paying by credit card]…Credit card

[Paying by bank transfer]…Cash card
or
Bank book + seal registered with the bank

If you bring your cash card to an au Style / au shop, you can easily set up the payment method without having to fill out the bank transfer request form or provide the seal registered with the bank. (Some financial institutions are not eligible for this service.)
When completing the procedure with only a cash card, the account holder will need to enter the PIN number.
If the contract is in the name of a minor and the minor does not have a cash card (or bank book and seal), it is acceptable to use a cash card (or bank book and seal) in the name of the parent or legal guardian.
An additional fee of ¥473 tax included/month is charged when paying by invoice.

If a payment method other than credit card is used for the monthly charges, one of the supplementary documents listed above is required.

Announcements

Sharing of customer information between mobile phone and PHS service providers

Mobile phone and PHS service providers may exchange the names, addresses, and other personal information of customers such as those indicated below. This information is used for the purpose of screening customers when applying for a contract, and the application may be denied depending on the circumstances.

Customers who owe an unpaid balance to another carrier after canceling their contract
Senders of unsolicited email (spam)
Customers whose service has been suspended due to refusal to respond to requests for identification verification in accordance with Article 11 of the Mobile Phone Improper Use Prevention Act

Multiple contracted lines under the same name for individual subscribers

To prevent large numbers of improper contracts under the same name, individual subscribers are generally limited to a total of five contracted smartphone and mobile phone lines under the same name. The number of lines that you can apply for may vary depending on the content of the application.

Provision of personal identification document information when subscribing

When personal identification documents such as driver's licenses are presented at the time of subscription, au may provide the information contained in such documents to the relevant issuing authority to confirm the validity. The aim of this measure, which has been in place since December 1, 2008, is to prevent the use of mobile phones with contracts that were fraudulently obtained with forged identification documents, in criminal activities such as bank transfer fraud. We appreciate your understanding in regard to our efforts to ensure reliable identity verification.

Changes to personal identity verification methods when subscribing

Please note that in accordance with the "Act for Identification, etc. by Mobile Voice Communications Carriers of Their Subscribers, etc. and for Prevention of Improper Use of Mobile Voice Communications Services" (also known as the "Mobile Phone Improper Use Prevention Act"), which came fully into effect on April 1, 2006, we have changed our methods for verifying the identity of individuals when signing up for a new contract or transferring ownership.

Inquiries about au mobile services

Inquiries by Phone

Select your language.

0120-959-472 (toll-free)

0120-959-472
(toll-free)

Open: 9:00 – 20:00 ^*1

*1 For lost or stolen phone, inquiry will be accepted 24 hours.

Digital Guide in other languages

Mobile phone service guide

Our Service Guide for you.
Available in Japanese, English, Chinese and Portuguese.

For details

All of the indicated amounts include tax unless otherwise specified.