How do I add international calling when I only have a data eSIM in Japan?
Answer
Use the carrier’s official chat or account tools over the data eSIM and ask them to add the travel calling feature after verifying you with account details instead of SMS, or enable Wi‑Fi Calling before you travel when possible.
Before you start: stop right away if…
- Do not share account PINs or one-time codes with anyone who contacts you outside official in-app chat.
- Deleting the wrong eSIM can remove your primary line until it is restored.
Follow these steps
Confirm data eSIM is online
Make sure the travel data eSIM is connected and you can browse, then open your primary carrier’s official app or website.
You should see: You can reach account support over data.
Start official support chat for travel calling
Explain you are in Japan on a data eSIM, cannot receive SMS codes, and need TravelPass or an international calling add-on applied manually after account verification.
You should see: Support verifies you with account details and offers a travel feature.
Ask for a non-SMS verification path
If the flow insists on texting your phone number, ask chat to verify with account PIN, billing information, or email instead.
You should see: The travel feature is added without needing inbound SMS.
Test calling and future Wi‑Fi Calling setup
After the feature shows active, try a call over the carrier’s travel service or Wi‑Fi Calling if enabled; for future trips, turn on Wi‑Fi Calling before leaving home.
You should see: You can place calls, or you know what to enable before the next trip.
Not sure this is the right page? Check here
0 of 5 checked
Extra tips
What to look for: Whether the phone prompts for SMS verification you cannot receive, and which travel feature your carrier offers for Japan
Before you change anything: Stay on official carrier sites/apps only. Have account PIN, billing ZIP, and device IMEI ready for chat verification. Do not delete your primary eSIM until travel service is confirmed. Never share one-time codes with unexpected callers.