Online Sign-up Guidance

Y!mobile Online Store English Guidance Y!mobile Online Store English Guidance

This page explains how foreign nationals residing in Japan can sign up for a Y!mobile SIM only service account online.
Click here to check the Y!mobile service outline and price plans.


Check if your device is available for using Y!mobile SIM card.

1. Have your device ready

2. Unlock device if SIM restricted

SIM unlocking is the procedure to make your device available for Y!mobile SIM even if your smartphone is purchased from another mobile network operator.
Please ask the company from which you purchased the device as the procedure for SIM unlocking is different for each mobile phone company.
SIM unlocking is not necessary if you purchased the "SIM free" device such as Apple Store.

You can check the models that have been technically confirmed to work under Y!mobile network service and SIM below. (in Japanese)

Models that have been confirmed to work:
Click here

  • * The connection record indicates that you have used the relevant function at least once under certain conditions with the relevant device. Connection results do not guarantee all operations.

Prepare what you need for sign up

1. Identity verification documents

One of the following IDs is required



Please prepare either of the following identification documents (1) or (2).

  • * Submitting the copy of the ID on which your current address is shown.
  • * If your current address is different from which shown on the identification document, or if the identification document does not show your current address, submission of your resident's card or a utility bill receipt showing your current address as the destination is required. (Valid only the document within 3 months from issuance)

(1) Special Permanent Resident Certificate

  1. Valid only those within the expiration date
  2. Showing the current address is required
  • * When you upload the special permanent resident certificate, please make sure to upload it with masking the column of "gender" by the masking paper.
    If that part is not masked, the copy will be erased and your application will be declined.

(2) Residence Card (former Alien Registration Card) + your home country Passport

  1. Valid only within the expiration date
  2. Remaining 90 days or more until the period of residence
  3. Showing the current address is required
  • * The submission of the copy of the ID ( back side) is required even if there is no change in history.
  • * Your home country passport should be within the expiration date.
  • * When you upload the passport, please make sure to mask the column of "gender" by the masking paper.
    If that part is not masked, the copy will be erased and your application will be declined.

Instruction on uploading the image


Take a picture of your identification document with a digital camera or smartphone. Save the picture on your computer or smartphone. Please select the picture on which your face photo or ID description can be seen clearly. For identification documents, please take a picture so that you can see the entire object of the ID.

File format JPEG
File Size within 5MB *3MB to 4MB is recommended.
Notes for taking photo
  • Focus
  • Avoid shadows
  • No flash, avoid reflecting light
  • Shoot from the front angle
  • No image processing
2. Payment method

You can sign up with a credit card.


If the name of the credit card is different from the subscriber, please submit the following documents. (In Japanese)


Please print the PDF from the URL link above and fill it out. Then take a shot with a digital camera or smartphone, and upload the image file to the Online Store.

Submission of the identification document of the credit card account holder is also required.

Acceptable credit cards

The following credit card brands can be used to pay the initial fee and monthly fee.

Credit Card Brands List Acceptable for Bill Payment
  VISA, Mastercard, JCB, American Express, DinersClub, UC, MUFG Card, DC, UFJ Card, NICOS, Mitsui Sumitomo Card, AEON Credit Service, Orico, OMC, Cedyna, Life Card, TS Cubic, Rakuten Card, Juccs, Pocket Card
  • * Debit cards cannot be accepted. If you use a debit card, it may take several months for refund if your application is voided due to the incomplete application, or cancellation.
  • * Corporate credit cards is not accepted.

Sign up online
Example of applying for a new contract with a credit card

1. Please select the size of the SIM you order
nano or micro


2. Select the "New Contract" as contract type


3. Select the service plan


4. Select the voice call option


5. Extra Data Option


With Extra Data Option Free Campaign 2, Extra Data Option is free for 12 months from the month after sign-up when you sign up for the first time*

  • * [Extra Data Option Free Campaign 2] First time applicant for Extra Data Option (¥550/month) will enjoy 12 months free of charge from the following month of subscription. During the month of application, discount is applied as an extra privilege. For using the increased data amount by Extra Data Option, self application is required to go back to the normal speed.

6. Press here to see the fee detail


7. After checking the fee detail, press here to start application


8. Agree to the important explanations of the Y!mobile Online Store


9. Authenticate your email address


10. Fill in your phone number as the contact


Press here to go to Next

11. Select your nationality


Please select your nationality and whether you are a permanent resident. This page describes the case of non-Japanese nationality.

12. Upload your identification document


Upload the images of the documents you prepared in STEP 2. For those with Special Permanent Resident status, upload the Special Permanent Resident Certificate.

13. Upload your identification document
In case you DON’T have Special Permanent Residence: case 1


For those without permanent resident status, upload 3 items: the front and back of your resident card, and your passport.

14. Upload your identity verification document
In case you DON’T have Special Permanent Residence: case 2


If you are not a permanent resident, please select the date of expiration of your period of stay.

15. Check if the address on the identification document is the same as the current address.


Please select whether the address on the uploaded document and the current address are the same. If not, you will need to upload a document that confirms your current address, such as a utility bill receipt.

16. Fill in the subscriber's information


17. Fill in the postal code and address


18. Fill in the user's information


If the user is a family member, please fill in the name, gender, and date of birth of the family member as the user's information.

19. Set the network security code


Please specify your 4-digit network security code used for identity verification for various procedures. Please be careful not to forget the code.

20. Select the bill payment method


You can only select credit card as the payment method.

21. Enter your credit card information


22. Confirmation


23. Agree to the important explanations


Check the important explanations and check "Agree". Click here for the English version of "Important explanations regarding communication services"

24. Please select the method of viewing the contract details


25. Complete the application


Your application for SIM card service contract has been submitted. You will receive the application confirmation notification by email.
After the examination succesfully completed, the SIM card will be delivered to the subscriber's address within a few days.

If any confirmations or corrections in your application is needed, we will contact you by e-mail. Please correct the application contents accordingly.


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