Privacy Policy

1. 01.Proper Management of Personal Information

   Adjust One Co., Ltd. (hereinafter referred to as "the Company") handles personal information such as names, addresses, and email addresses obtained from customers using our services in accordance with the Act on the Protection of Personal Information, the Telecommunications Business Act, the “Guidelines for the Protection of Personal Information in the Telecommunications Business” (hereinafter referred to as “the Guidelines”), and other relevant regulations.

2. 02.Use of Cookies

   This website may use cookies. The Company does not consider cookies to be personal information by themselves, as they do not identify specific individuals. However, if cookies are used in conjunction with personal information, they are treated as personal information. Even when individuals cannot be identified, we disclose the purpose and method of cookie use. You may refuse cookies through your browser settings. If refusal of cookies results in the inability to access certain services, we will disclose this as well.

   1. (1)Remarketing Advertising

      This site uses the remarketing functions of online advertisements via cookies. Ads for this site may be displayed on various websites by third-party distributors such as Google. These cookies are used within the scope set forth in each distributor's privacy policy. Users can disable cookie-based advertising by visiting the opt-out pages listed below:

      • Google Ads
      • Yahoo! Display Ad Network (YDN)
      • Network Advertising Initiative Opt-Out Page

   2. (2)Access Analysis

      This website uses Google Analytics to collect and analyze access logs. Google Analytics uses cookies but does not collect personally identifiable information. The collected logs are managed in accordance with Google’s privacy policy. For more details, please refer to:

      • [Google Analytics Official Site]
      • [Google Privacy Policy]

3. 03.Collection of Personal Information

   In providing our services, we may collect the following customer-related information. Note that the items below are examples and may not necessarily be considered personal information depending on the nature of the data:

   1. (1) Information Provided by Customers

      Name (including phonetic spelling), email address, other contact details, credit card information, and any other information provided to us by customers.

   2. (2) Information Collected in Connection with Service Use

      Information related to service usage such as product purchases, date and time of use, and data usage.

4. 04.Purpose of Use of Personal Information

   Unless otherwise permitted by law, personal information collected will only be used within the scope necessary for the following purposes or shared across our services when necessary. We may also delegate processing to affiliates, strategic partners, agents, third-party marketers, or other stakeholders to provide services of interest to customers. If you do not want your personal information used for marketing purposes, you may request to opt out under Section 11.
   Permissible uses include:

   1. (1)With customer consent
   2. (2)As required by law
   3. (3)When necessary to protect someone's life, body, or property and consent is difficult to obtain
   4. (4)When necessary for public health or the sound upbringing of children and consent is difficult to obtain
   5. (5)When cooperation with a national or local government body is necessary and obtaining consent may interfere with the execution of duties

   • Common Purposes of Use Across All Services:

     • Billing, notifications, service provision, cancellations, delivery, payment processing, customer support, inquiries from contractors, after-sales services, and other related tasks
     • Recording of calls to the JAPAN PREMIUM SIM Support Center for quality control and service improvement
     • Advertising and marketing by the Company or its business partners
     • Sending newsletters and information to customers
     • Providing service information via email or phone
     • Analyzing service usage for development and improvement
     • Contacting customers for surveys, campaigns, etc.
     • Preventing and investigating fraud, unauthorized use, or non-payment
     • Investigating and responding to product issues, system failures, or service-related incidents
     • Providing information about services offered by the Company or its group/partner companies

   • Installment and Credit Services:

     • Installment payment processing
     • Customer consultation support
     • Credit screening
     • Other activities as defined in the relevant installment agreements

5. 05.Changes to Purpose of Use

   We may change the purposes of use when reasonably deemed to be related to the original purposes. Changes will be notified or published on our website.

6. 06.Provision of Personal Information to Third Parties

   We do not provide personal information to third parties without consent, except as required by law or as outlined in Article 15(1) of the Guidelines.

7. 07.Provision to Foreign Third Parties

   When providing personal information to overseas third parties, we take the necessary steps in accordance with applicable laws, including obtaining consent.

8. 08.Shared Use and Delegation

   If the recipient meets the conditions under Article 15(4) of the Guidelines, the Company may treat them as not being a “third party.” In such cases, personal information may be outsourced or jointly used without customer consent. Shared use is primarily within our corporate group but may include other specified parties. Details on shared use will be disclosed on the relevant service website.

9. 09.Management of Personal Information

   We take appropriate security measures ("security management measures") to prevent unauthorized access, loss, or leakage of personal information. These include:

   1. (1) Technical Measures:

      Access control, restrictions on data extraction, and protection against external unauthorized access.

   2. (2) Organizational Measures:

      • Employee Oversight: Appointment of an Information Management Officer with clear responsibilities and internal controls.
      • Contractor Oversight: When outsourcing, we select contractors who handle data properly and include terms on security, confidentiality, re-outsourcing, and data return in contracts.

10. 10.Handling of Credit Card Information

    We use the payment system provided by SMBC GMO Payment Inc. and do not retain customer credit card information.

    • Purpose:To process service payments
    • Retention Period:Seven years after termination of service contract, in accordance with legal requirements

11. 11.Requests for Disclosure or Correction of Personal Information

    If a customer requests disclosure, correction (including addition, deletion, or suspension of use or provision to third parties), we will confirm the requester’s identity and respond promptly unless:

    • There is a risk of harm to the life, body, or property of the customer or a third party
    • It may severely interfere with our business operations
    • Cooperation with governmental functions would be hindered
    • Another law specifies a special procedure

    • Retention Period:

      Personal information is retained only as long as necessary for its intended use and, in principle, for seven years after contract termination. After the period ends, data is securely deleted.

12. 12.Contact for Personal Information Inquiries

    For inquiries, requests for disclosure, correction, or complaints regarding personal information held by us, please contact:

    • JAPAN PREMIUM Support Center

      info@japansim.jp (English support available)
      9:00–17:00 on weekdays (closed on weekends and public holidays)

13. 13.Changes to This Privacy Policy

    This policy may be updated as needed. If required by law, changes will only apply to customers who have agreed to the revised policy. Any changes will be announced via our website or other appropriate means.