For US Military Customers in Japan Online Sign-up Guidance
Prices include tax unless otherwise noted.
These may differ from charged prices due to calculation of consumption tax.
For new subscription or device upgrade, in addition to the device purchase cost, an activation fee is required.
Activation Fee | ¥3,850 |
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We will in voice the activation fee directly to the contract holder at a later date.
The activation fee cannot be refunded upon cancellation
For monthly payment, using a credit card or bank account transfer is recommended.
●After applying, it may take 1 to 2 months for card withdrawals and procedures with financial institutions to be completed. Until then, we will send you a transfer form, so please pay from a convenience store or financial institution. ●If you wish to pay by credit card, we will ask you to use a credit card, and if you wish to pay by bank transfer, we will confirm your bankbook or cash card at the time of application.
When switching from another company to Y!mobile smartphone or mobile phones, you can use Mobile Number Portability (MNP) to keep your current phone number.
■ Proof of identification
Under the Mobile Phone Improper Use Prevention Act, you are required to present the documents stipulated by Y!mobile when you enter into a contract. See the Y!mobile website (▶https://www.ymobile.jp/support/process/honkaku/) for details. You are required to present the documents in the box below when applying for an instalment purchase contract.
Please have the original documents with you. Photocopies are not accepted. The documents presented are not used for other than applicant identification. We may ask you to present one or more of the following documents depending on the contents of your application:
Residence Card + Foreign Passport or Special Permanent Residence Certificate ■ Document must be valid. ■ Must have your current address written on it. |
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■ Supplemental Documents
For general inquiries or technical support, contact one of the following numbers.
Business hours | 10:00am-7:00pm(for general information) | |
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From Y!mobile handset | 151 | Press “5” for English support |
From landline | 0570-039-151 |
Business hours | 10:00am-7:00pm(for general information) |
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From Y!mobile handset | +81-44-382-0800 |
From landline | 81-44-382-0800 |
Using a SIM in your iPhone via Y!mobile
Setting Y!mobile with an Android smartphone
If you are unable to connect to the Internet (send and receive mobile data) using the latest version of iOS, follow the procedure below to set up your APN.
Download and install the iPhone APN setup configuration profile
Connect to a Wi-Fi network, and open Y!mobile official website.
Tap「APN設定用の構成プロファイル」.
Tap “Allow”.
Tap “Close”.
Return to the Home screen,tap on “Settings”, then tap on “Profile Downloaded”.
Tap“Install”.
If prompted for a passcode, enter the passcode following the on-screen instructions.
Tap“Install”.
Tap “Done”.The setup is now complete.
If another company’s profile is set up, you will not be able to install Y!mobile profile.Make sure to delete the profile.
Delete your APN profile
Tap“Setting”.
Tap“General”.
Tap “VPN and Device Management”
Tap the confirmation for another company’s SIM profile.
When the profile screen comes up, tap“Remove Profile”.
If prompted for a passcode, enter the passcode following the on-screen instructions.
Tap“Remove”.
Profile deletion is complete.
Set up an APN to communicate.
The APN may be set automatically depending on your device. If the mobile communication cannot be established, configure APN in the following steps.
Swipe up on the Home screen
Tap “Settings”.
Tap “Network and Internet※”.
Tap “Internet※”.
Tap “Settings”.
Tap “Access Point Names (APNs)” at the bottom of the page.
Check via browser or other app whether the mobile communication is available. → STEP12
If not configured, or if communication cannot be established via automatically configured APN, tap “+ (New APN)” in “Menu”.
Check via browser or other app whether the mobile communication is available. → STEP12
If not configured, or if communication cannot be established via automatically configured APN, tap “+ (New APN)” in “Menu”.
Verify that New APN is displayed.
Enter the setting items listed below.
Please be careful not to make mistakes with punctuation marks such as '.' (period)and','(comma).
■Setting items
Name | Y!mobile APN ※Name shown in the APN list. You can define it as you like. |
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APN | plus.acs.jp.v6 |
Username | ym |
Password | ym |
MMSC | http://mms-s |
MMS proxy | andmms.plusacs.ne.jp |
MMS port | 8080 |
MCC | 440 |
MNC | 20 |
Authentication type | CHAP |
APN type | default,ia,mms,supl,hipri |
On the ︙ menu, tap “Save”
Return to the APN list, select the newly created name, and then scroll from the bottom to the top to return to the Home screen.
Tap your browser to confirm connection.
Bilingual crew are available at the following direct managed shops.
SoftBank Ginza
https://www.ymobile.jp/shop/detail/TD31/
SoftBank Roppongi
https://www.ymobile.jp/shop/detail/T248/
SoftBank Omotesando
https://www.ymobile.jp/shop/detail/T1D3/
SoftBank Shibuya
https://www.ymobile.jp/shop/detail/T198/
SoftBank Nagoya
https://www.ymobile.jp/shop/detail/C300/
SoftBank Osaka Grand Front
https://www.ymobile.jp/shop/detail/K1U6/
For US Military in Japan customers, bilingual crew will serve you at the following on base shops.
Yes you can get English support on general inquiries or technical support. Contact one of the following numbers.
From Y!mobile phone: 151
From landline or other carrier's phone: 0570-039-151
For both the above, press “5” for English support.
Chat support on our website is not available in English.
Yes. For SIM card (including eSIM) only subscribers, the global roaming option will be available from the 5th month: the day after the last day of the 4th billing month after the service sign up.
Global Roaming Option application is required.
Basically, you can use your own device as long as it supports the following Y!mobile frequency band and communication method.
[5G]
3.7GHz、700MHz、1.7GHz、3.4GHz、28GHz
[4G]
2.5GHz、
2.1GHz、
1.7GHz、
900MHz
The service area coverage varies depending on the communication method and frequency band supported by your device.
Currently high-speed, large-capacity 5G (new frequency) service is provided in a limited area.
Please check the coverage area in advance before you sign up the 5G service.
Depending on the specifications of your device, you may not be able to use the service even if it just adopt the available communication methods and frequencies.
Please ask the manufacturer or retailer for the specifications of your device.
If the device is SIM-locked by the network operator from which the device was originally purchased, it must be unlocked before using the SIM (including eSIM) of Ymobile.
Please note that the 3G service is scheduled to end.
https://www.ymobile.jp/support/info/closed3g/
Yes, it is possible to pay your past due amount using bank transfer. You will need SoftBank Banking Information in order to process the payment.
Bank Name | Mitsui Sumitomo Bank |
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Branch Name | Honten eigyoubu |
Account Type | Savings account |
Account Number | 4740201 |
Account Name | SoftBank Corp. |
日本語 / ENGLISH