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FAQ

NOTIFICATION OF SYSTEM MAINTAINENCE

1. Maintenance Time

　1st: 2025/04/17 22:00 to 2025/04/18 09:00

　2nd: 2025/04/28 22:00 to 2025/04/29 09:00

2. Applicable Products

　Below Part numbers of Nippon SIM for Japan will be impacted

　DHA-SIM-025/-095/-113/-138/-139/-149/-150

3. Reason

　Maintenance service by request of NTT-Docomo

4. Impact on Service

　New activation of SIM card service might not be possible during the maintenance period. Please activate

　your SIM out of the maintenance period.

5. Memo

　For SIM card already being using, the service will not be impacted.

Post Sales Supports
Please fill in the below form for after sales supports
Please select if you have any of the following symptoms: Required

To accelerate the time to solve the issue, please attach the screenshots requested below: 

・iOS

Setting ＞ Cellular
Setting ＞ Cellular ＞(eSIM)
Setting ＞ Cellular ＞(eSIM)＞Celullar mobile data network
Setting ＞ General ＞VPN and Device management

・Android

The pages relevent to Mobile network and APNs.

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terms of service

We will use personal information provided by customers, such as names, e-mail addresses, and telephone numbers, for the following purposes. (1) For product delivery, provision of services, payment settlement, response to customer inquiries, related after-sales service, and other operations necessary for the execution of transactions (2) To notify customers of new services and new products by e-mail, mail, telephone, etc. (3) To analyze the use of services by customers, develop new services, and improve existing services. (4) Questionnaires, To communicate with customers in connection with campaigns, etc. (5) To customize the content you see on this site in an easy-to-understand manner. For more information about our policy on the handling of personal information, please see the https://www.nipponsim.jp/privacy on our Privacy Policy website.

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