Who runs the site
eSIM Japan Guide is operated by the team behind Wanderly. This page explains the information involved in visiting the guide, using its tools and following outbound links. It applies to this guide; other sites have their own policies. Our About page explains the guide’s purpose and ownership.
Browsing and interactive tools
This is a static information site. You do not need to create an account, and the guide does not provide a checkout or collect payment details. The comparison tools run in your browser. Their inputs display recommendations and estimates; the guide does not maintain a customer database of those inputs. The analytics section below explains any measurement events sent by this version of the site.
The site is hosted on Vercel. The hosting service processes technical request information needed to deliver and protect the site, which can include an IP address, requested page, time and browser details. See Vercel’s privacy policy for its handling of that information. Hosting requests are separate from the optional visitor analytics described below.
Analytics and cookies
Visitor analytics are disabled on this version of the site. The guide does not load Vercel Analytics, Vercel Speed Insights, Plausible or Google Analytics, and it does not send interaction events to those services.
If you dismiss the mobile plan suggestion, the guide saves that preference in your browser’s session storage so it stays dismissed during that tab’s session. This preference is not sent to a server and contains no personal information.
Outbound links and purchases
Wanderly links contain referral parameters identifying eSIM Japan Guide and the link placement. Following one opens Wanderly’s site, where its own privacy policy, account rules and checkout terms apply. Competitor links similarly take you to another company’s service. This guide does not control those companies’ cookies, information collection or subsequent communications.
The fact that Wanderly and this guide share an owner is disclosed on our affiliate disclosure page. We do not ask you to enter a payment card or eSIM installation code into this guide. Avoid sending those details in a correction or support email.
Email contact and requests
If you email the contact address, the receiving mailbox processes your address, message and any attachments through its email provider. That information can be used to answer your request or investigate a reported correction. Send only what is needed to explain the issue, and hide sensitive order or installation information in screenshots.
Use the contact page for privacy questions and identify the information or page concerned. This policy may be revised as the site’s services change; the update date above records the version shown here. Our comparison methodology explains how editorial and price information is maintained.