Arrive in Japan already online. Install a travel eSIM before you fly — no roaming bills and no SIM swap.
Before you buy for Japan
- Check your phone is eSIM-ready and carrier-unlocked.
- Confirm the plan covers Japan for your travel dates.
- Right-size your data with the Advisor so you don’t overpay.
How we calculate value
Effective price per GB uses usable data (a realistic ~2 GB/day ceiling for capped/unlimited plans), so an oversized bucket you cannot use does not distort the ranking.
FAQ
Does an eSIM work in Japan?
An eSIM works in Japan on the networks each provider supports, as long as your phone is eSIM-capable and carrier-unlocked. Check compatibility by dialing *#06# and confirming your device shows an EID.
How do I set up a Japan eSIM?
After purchase you receive a QR code. Scan it in your phone settings before departure or on arrival, enable the eSIM line, and turn on data roaming for that line. No physical SIM swap is needed.