How to Set Up an eSIM in Japan (iPhone & Android)

TL;DR: Buy a plan → get a QR by email → on iPhone: Settings › Cellular › Add eSIM › scan QR. On Android: Settings › Network › SIMs › Add eSIM. Turn on data roaming for the eSIM. Done in ~3 minutes.

Before you start

Make sure your phone is eSIM-compatible and carrier-unlocked. Install over Wi-Fi before your trip, and set your activation/start date at checkout.

Two phones side by side, evoking an iPhone and an Android, used to prepare an eSIM before a trip

iPhone: step by step

Open Settings › Cellular › Add eSIM.
Tap Use QR Code and scan the QR from your confirmation email.
Label the plan (e.g. “Japan”), then enable Data Roaming for this line.

Android: step by step

Open Settings › Network & internet › SIMs › Add eSIM.
Scan the QR code and follow the prompts; set it as your data SIM.
Enable Roaming for the eSIM line.

Troubleshooting

No signal? Toggle Airplane mode, or reselect the network manually.
Slow after a while? Some plans throttle after the daily cap — this is shown on the plan.
Still stuck? Our money-back guarantee has you covered — contact support.

FAQ

Will my phone number still work? Yes — your primary SIM stays active; the eSIM handles data (dual-SIM).

When does it start? On your chosen start date or first connection in Japan.

See Japan eSIM plans →