China, Japan and South Korea eSIM setup: get connected after landing

This offer covers China, Japan and South Korea. Hong Kong and Macao aren’t in it. Keep this regional service separate from Japan-only local KDDI plans, which have different terms.

Each plan gives you one data allowance to use during its listed days, rather than a new allowance each morning. Prices are in Australian dollars.

The Start within column is how long you have after buying to begin using the plan. Its usable days start when the eSIM first connects to a mobile network covered by the plan. A 30-day plan cannot be kept unused indefinitely; the purchase-to-start deadline still applies.

For a starting estimate, use our trip planner with the destination, first and last days you need data, phone-use style and sharing needs. Its estimate already includes some extra room. Choose an allowance that covers that estimate and a plan lasting for the full stay.

1. Join airport Wi-Fi, finish its sign-in and open a normal webpage. If it won’t load, use hotel Wi-Fi or another steady, trusted connection before starting.
2. Open the setup email for this order on the intended phone. Use its QR, supported quick-install or manual option. Manual fields must come from that email; don’t substitute another plan’s details.
3. Enable the installed travel line and select it for mobile data. Turn automatic data switching off, so the Australian SIM doesn’t take over that job.
4. Keep Australian-line Data Roaming off. Set travel-line roaming exactly as the email directs, and enter a manual APN only if that order supplies one. APN is the phone’s internet connection setting; copy the value from this email.
5. Turn flight mode on for 30 seconds, turn it off and wait two minutes. Switch Wi-Fi off and load a normal webpage. If it opens, mobile data worked for that test. Restore Wi-Fi if you still need setup help.

If the menu names differ, the installation guide shows the iPhone, Galaxy and Pixel paths. Keep this three-country order’s email beside it, rather than copying settings from a Japan-only local plan or another profile already on the phone.

Keep the eSIM installed and restore Wi-Fi. Confirm the selected data line and the order’s roaming/APN settings before changing anything else. Don’t delete the profile, repeatedly scan the QR code or copy another plan’s APN.

Use the guided no-data check. If you still need us, include the order number, exact phone model, current country/location, error text and Wi-Fi-off webpage result. Say whether data worked earlier. Keep QR codes and activation details out of public messages.