Airalo
Visitors who want to buy and install a Japan data eSIM before they land, without a Japanese phone number.
- Works in English
- Yes: Airalo's site and app are in English.
- Cost
- Paid
- Platforms
- iOS, Android, Web
What it does
A prepaid mobile-data option for a visit to Japan. Start with device compatibility, then choose a package for your dates rather than assuming every eSIM works the same way.
Airalo offers Japan packages with fixed data or unlimited data options. Use the package page to compare validity and the included service before paying. The purchase flow supports different currencies, so a price seen by another traveller may not match yours.
The catch
Your device must support eSIM, and its compatibility should be checked against Airalo’s official guidance. Review the individual package’s activation rules and inclusions. Do not assume a mobile-data package also supplies the Japanese phone number needed by another service.
Cost and plans
Packages are paid and vary by allowance, duration and currency. Follow the Japan package link for the current total; check whether top-ups are offered for your selection rather than assuming they are included.
How to get started
- Open the official device compatibility guide and check your model before buying.
- Choose Japan, compare data allowance and validity, and read the selected package details.
- Install with a stable internet connection. In Japan, select the eSIM for mobile data using Airalo’s instructions.
Sources
Checked 2026-11-02. Prices and conditions change, check the official source before relying on this.