Japan · Setup guide

How to set up a Japan eSIM.

Under 60 seconds. Works on every iPhone from XR onwards and every Android flagship from 2020 onwards. Profile routes through NTT Docomo 4G + 5G.

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  1. 01

    Open Settings → Cellular

    Tap "Add eSIM", then "Use QR Code".

  2. 02

    Scan the QR from your confirmation email

    You can scan directly from another screen. Use the Japan eSIM label when prompted.

  3. 03

    Set as your travel line

    Set the Japan eSIM as your secondary line. Keep your home SIM as primary so iMessage and WhatsApp stay on your regular number.

  4. 04

    Toggle Data Roaming ON for the Japan line only

    Data Roaming must be ON for the eSIM profile. Leave your home line's Data Roaming OFF to avoid carrier fees.

  5. 05

    Switch cellular data to the Japan line on landing

    The profile connects to NTT Docomo automatically. First connection takes 30–90 seconds.

Japan-specific troubleshooting

Things that can go wrong in Japan.

  • No service on landing: toggle airplane mode twice. Docomo registration typically takes 60 seconds.
  • "Invalid SIM" on Pixel: update to the latest Android security patch — Pixel 6 devices on patches older than March 2024 have a known eSIM registration bug.
  • Shinkansen dead zones: tunnels north of Nagano have no coverage on any Japanese carrier. This is expected.
  • Data-only plans do not include voice or SMS. Use WhatsApp or FaceTime for calls.

Ready to buy

Plans for Japan.

From $3 for a short trip to unlimited monthly. All plans include hotspot tethering.

See Japan plans