Prepare your Japan eSIM before you arrive to avoid landing-day connection problems.

Check your phone first

Your phone must be unlocked and eSIM-compatible before a digital SIM can work.

• Confirm eSIM support in device settings.
• Check whether your phone is carrier locked.
• Keep Wi-Fi available for activation.

Apply before you need data

Do not wait until you are standing in an airport arrival hall if you can avoid it.

• Prepare ID and payment method.
• Save QR or activation instructions offline.
• Know which line should handle mobile data after arrival.

Test the basics after landing

Once in Japan, check signal, mobile data line selection, APN profile, and restart if needed.