Japan eSIM — Prepaid 5G Data Plans

Most iPhone XS and later, Samsung Galaxy S20 and later, and Google Pixel 3 and later support eSIM. You can check in your device’s Settings.

For most plans, validity starts from the first time your eSIM connects to a network at your destination—you can safely install it at home before flying. Exact details for each plan are clearly stated on its product page.

Most plans allow topping up data or extending validity—supported plans are clearly marked on the plan card and on the product page. You can also purchase a new plan anytime; the QR code is emailed to you within minutes.

The eSIM automatically selects the best available partner carrier with strong signal in Japan, supporting 5G/4G where coverage exists. The specific carrier for each plan is listed on its product page.

High-speed data is prioritized; after your daily allowance is used, speeds are reduced but remain sufficient for messaging, maps, and social media — you’ll never lose connectivity.

Data-only eSIMs do not include a phone number. You can still call and message normally via apps like Zalo, WhatsApp, and iMessage.