Roll over unused data and get the most use out of it!

Leftover data can be rolled over so you can use it without losing it.

[ 3GB Monthly Data Plan Rollover Example ]

• Data rollover will begin with the data left over from October 2016.
• Data rollover applies to those using the 3 Giga Plan, 7 Giga Plan, and 110MB/Day Plan. No applications or procedures necessary.
• The maximum amount of data that can be rolled over into the following month is the maximum amount of data available each month specified by your Data Plan.
• Data will be used in the following order: rollover data, additional (charged) data, and then the monthly data volume specified by your Data Plan.
• Regarding the 3 Giga Plan and 7 Giga Plan, data that has been rolled over from the previous month will expire on the last day of the current month.
• Regarding the 110MB/Day Plan, data that has been rolled over from the previous day will expire at 11:59:59PM in the current day.
• Should you change the Data Plan, unused data from the previous plan will roll over and the expiration period of the current plan will be applied.
• Should you change the SIM card, unused data and rolled over data before the change cannot be carried over.

ANSIM is cheaper, what you do is the same

The same call quality, phone number, network quality and the same apps!

• Enjoyable Internet

  

  With docomo you'll find connection easy and be able to enjoy the Internet at speeds up to 262.5 Mbps.

• Same phone number, same quality

  

  Switch your major mobile phone company's telephone number to ANSIM and keep using the same phone number. The call quality is the same.

• Apps can also be used!

  

  Use Twitter, Facebook and other SNS apps as well as most other apps as before.

ANSIM, a service reliable for a long-term use

Smartphone is an essential tool in our daily life,
so choose a company reliable for long-term usage.

• Customer Satisfaction No. 1

  

  Asahi Net has been receiving high evaluations from its customers in surveys ran by external parties.Click here for a list of awards.

• Telecommunication professionals

  

  We are professionals in the telecommunications business, building connections and supporting communication. Since the dawn of internet, we have been supporting the internet infrastructure of Japan.

• Listed on the TSE

  

  We are listed on the first section of the Tokyo Stock Exchange. We can be relied upon to provide you with a reliable service you can use for the long term.

Choose the smartphone you'll use with ANSIM

ANSIM is compatible with many SIM free devices.

iPhone XS compatible
Devices OK'd for ANSIM

Two simple ANSIM plans

• Voice SIM 3 Giga Plan 1,760 yen/month

  1 SIM card If unsure which Plan to apply for, apply for this one! If your phone is often in standby mode, and you use SNS and view Web sites, this Plan is for you.

• Voice SIM 7 Giga Plan 2,948 yen/month

  1 SIM card If in addition to phone, SNS and Web site viewing you also enjoy games and streaming video, this Plan is for you.

the opening month is not charged

• All above charges include tax.
• We also offer 20 Giga Plan (5,500 yen/monthly) which gives high speed communication up to 20 GB data traffic per month.
• We also offer 50 Giga Plan (12,320 yen/monthly) which gives high speed communication up to 50 GB data traffic per month.
• We also offer 110 MB/Day Plan (1,760 yen/monthly) which gives high speed communication up to 110 MB data traffic per day.
• Service opening month refers to the month which includes the following day of shipment (device including Voice SIM Card, etc.) made by Asahi Net.

Precautions

Please read the precautions listed below. Thank you.

Voice Calls

• All charges shown above include tax.
• There are no free calls with this service. Calls within Japan will be charged at 22 yen (tax-included)/30 seconds.
• Universal Service charge and Telephone Relay Service charge are applied separately.
• In a month the voice call functionality is removed, regardless of the day on which it is removed the full monthly charge for the voice call function will be charged for that month.
• For identity verification, you will need to provide a copy of one of the following: your driver's license, National Health Insurance card, passport issued by the Government of Japan, etc.
• If applying for Mobile Number Portability (MNP), the information registered with your mobile phone company and the information registered with Asahi Net and the information you supply to verify your identity will need to match.
• When using ANSIM it will not be possible to use i-mode and other NTT DOCOMO services. @docomo.ne.jp email addresses are also not provided.
• It is possible to change the SIM card type (mini-SIM, micro-SIM, nano-SIM). A handling charge of 3,300 yen (tax-included) will be billed.
• If you live outside Japan you will not be able to apply for this service.
• For registration, a mobile number portability (MNP) reservation number ticket valid for more than 10 days is required. Please confirm. If less than 10 days, you will not be able to apply for the service.
• To use the Voice SIM service, processing is required. Should the applicant not have requested the start of the service up until the day before expiry of the MNP reservation number, the processing with start automatically.
• Should a switch to another mobile phone company not have completed before expiry of the MNP reservation number, an application for another reservation number will be necessary.
• With MNP it is only possible to transfer the phone number; other information such as the mobile phone email address cannot be transferred.
• At the same time as processing of the Voice SIM application has completed, the contract with the other mobile phone company will be cancelled. Furthermore, any cancellation charges associated with switching to another mobile phone company will be billed.
• Should it be necessary to forcibly cancel a user's service due to non-payment or other reasons, the phone number being used with this service will be forfeited.
• Should processing be completed for moving this service's phone number to another mobile phone company's service, the date of completion of processing will become the date on which this service is cancelled.
• In the month this service is cancelled, the full monthly service charge will be billed.
• If a request to cancel this service is received on or before the 15th day of a month, the service will be cancelled in the same month.
• In keeping with requirements of the "Act for the Prevention of Illegal Mobile Phone Use" in Japan, applicants for the Voice SIM service must submit a copy of a personal identification document.
• The minimum period of use is 12 months, including the month in which the service is first used. Should the service be cancelled during the minimum period of use, a cancellation charge of 8,800 yen (tax-included) will be billed.
• It is not possible to cancel an application for this service.
• In order to fairly offer this service, we reserve the right to decline applications, such as when an applicant has made several applications, or when several applications have been made from the same postal address.
• The product names and company names listed are the trade name, trademark and registered trademarks of each company.

The Service

• Asahi Net offers this service as a mobile virtual network operator (MVNO) using the network of NTT DOCOMO.
• To use the service, a NTT DOCOMO Xi (crossy) or FOMA compatible device (smartphone, tablet, mobile router, etc), or SIM Free mobile device (smartphone, tablet, etc.) is required. For a list of devices that have been checked by Asahi Net, click here.
  • Xi (crossy) and FOMA are registered trademarks of NTT DOCOMO, INC.
• Minors under age 18 are not eligible to sign a contract by themselves.
• Users under age 18 are required to use a filtering service in order to protect them from online issues unless requested by their parental guardian.
  A filtering service can prevent those users from browsing illegal and/or harmful websites.
  If parental guardians wish to use a filtering service for their minors, please note that Asahi Net does not offer such a service and they are required to find one which suits their needs.

Service Area

• The service area is the same as that provided with NTT DOCOMO's Xi (crossy) and FOMA services. To use the service in Xi (crossy) areas a LTE-compatible device is required.
• International roaming is not offered with this service.

Speeds / Supported Areas

• With the 3 Giga Plan, until the monthly 3GB limit of data traffic reaches about 3GB the service can be used at a maximum speed of 262.5Mbps. Should the 3GB limit be reached in a month, the connection speed will be reduced to 200Kbps until 00:00 on the first day of the following month.
  • From 00:00 on the first day of the following month the speed restriction will be removed and a maximum 262.5Mbps will be available.
• With the 7 Giga Plan, until the monthly 7GB limit of data traffic reaches about 7GB the service can be used at a maximum speed of 262.5Mbps. Should the 7GB limit be reached in a month, the connection speed will be reduced to 200Kbps until 00:00 on the first day of the following month.
  • From 00:00 on the first day of the following month the speed restriction will be removed and a maximum 262.5Mbps will be available.
• With the 20 Giga Plan, until the monthly 20 GB limit of data traffic reaches about 20 GB the service can be used at a maximum speed of 262.5 Mbps. Should the 20 GB limit be reached in a month, the connection speed will be reduced to 200 Kbps until 00:00 on the first day of the following month.
  • From 00:00 on the first day of the following month the speed restriction will be removed and a maximum 262.5 Mbps will be available.
• With the 50 Giga Plan, until the monthly 50 GB limit of data traffic reaches about 50 GB the service can be used at a maximum speed of 262.5 Mbps. Should the 50 GB limit be reached in a month, the connection speed will be reduced to 200 Kbps until 00:00 on the first day of the following month.
  • From 00:00 on the first day of the following month the speed restriction will be removed and a maximum 262.5 Mbps will be available.
• With the 110MB/day Plan, until the monthly 110MB limit of data traffic is reached the service can be used at a maximum speed of 262.5Mbps. Should the 110MB limit be reached in a day, the connection speed will be reduced to 200Kbps until 00:00 of the following day.
  • From 00:00 on the following day the speed restriction will be removed and a maximum 262.5Mbps will be available.
• The communication speeds shown for this service are the maximum technically possible, however they are not the speeds that you will actually experience when using the service. The service is a "best effort" service and therefore actual speeds are dependent on many factors including the communication environment, congestion on networks, the device in use at the time, etc. 262.5Mbps is possible only in some Xi (crossy) areas.
• The service area is the same as that provided with NTT DOCOMO's Xi and FOMA services and so is said by NTT DOCOMO to be available to 100% of Japan. To check service areas, please visit NTT DOCOMO's Web site.

Changing Plan

• Changes take effect from the first day of the following month.
• Only one change of Plan is possible per month.
• Only those Plan change requests processed before 18:00 on the last day of a month will take effect.
• There is no handling charge for changes to the 3 Giga Plan, 7 Giga Plan, 20 Giga Plan, 50 GB Plan and 110 MB/Day Plan, however a handling charge will be billed for changes to the 128K Plan.
• A change of Plan is not possible in a month in which a change of SIM card functionality has occurred.
• Should there be a change to the SIM card's functionality, the functionality of the old SIM card will stop the moment a session is established with the new SIM card or 10 days after the shipping of the new SIM card.

The SIM Card

• Only one SIM card is available with each Asahi Net contract.
• Please refrain from taking the SIM card outside Japan.
• In order to fairly offer this service, we reserve the right to decline applications, such as when an applicant has made several applications, or when several applications have been made from the same postal address.
• Should you cancel the service, please return the SIM card to the postal address designated by Asahi Net.

Devices

• If you only purchase the SIM card with this service, please provide your own device to use with the SIM card. Click here for a list of devices OK'd by Asahi Net Devices OK'd by Asahi Net
• It is possible for some applications to not work on some services and devices that are unique to NTT DOCOMO.
• Devices supplied by NTT DoCoMo do not require SIM unlocking procedure.
• Whether the use of tethering is possible or not depends on the specification of your device.
• Should the SIM card and/or device fail to work out of the box, before contacting Asahi Net for a replacement or repair, please refer to the manual supplied with the SIM card and/or device as well as the maker's Web site for assistance.
• Please note that substitute devices are not made available when repair or replacement of a device is made necessary.
• A device that meets technical standards is required for use with the SIM card.

Change, Loss and Replacement of SIM Card

• Should the SIM card fail to work out of the box, replacement will be possible for no charge.
• Should a change of SIM card size be requested, for example from Mini-SIM to Micro-SIM, a 3,300 yen (tax-included) processing charge will be billed.
• Should you lose or break the SIM card, a replacement can be sent to you for a 3,300 yen (tax-included) replacement fee.
• There will be no reduction of service charges to cover for the time a replacement SIM card is sent to replace a lost or damaged SIM and use of the service is not possible.
• Should you change the SIM card, unused data and rolled over data before the change cannot be carried over.

Billing

• Should you cancel the service in the opening month, regardless of the campaign that is in operation, the initial setup charge (3,300 yen tax-included) and 1 month's monthly charge will be billed.
• Billing for calls and text messaging (SMS) will take place in the month after the following month.
  • Confirmation of usage details will be possible two months after the usage month.

Frequently Asked Questions