Items to prepare for MNP (Mobile phone Number Portability)
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.
<If you are using the "Electronic Certificate Function for Smartphones" for your My Number Card>
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).
How to apply for MNP reservation number at each mobile phone carrier
| NTT docomo (including Disney Mobile) | |
PC website |
|
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) →
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.
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.
Items required for application
-
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.
- 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 |
Passport (Japanese) | |
Physical Disability Certificate or Rehabilitation Certificate or Mental Disability Certificate | |
Special Permanent Resident Certificate | |
Residence card | |
Individual Number Card (My Number Card) | |
Basic Resident Register Card | |
Health insurance card
(au does not obtain or save your insurer number, insurance code, or insurance ID number.) | |
Minor | Personal identification document listed above
|
Business | Certified copy of register or seal registration certificate |
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.).
|
Certificate of Residence | The document must show your current address and must have been issued within the past 3 months.
|
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
|
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
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Open: 9:00 – 20:00 *1
*1 For lost or stolen phone, inquiry will be accepted 24 hours.
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