Once you arrive in Japan, activate your eSIM and connect to the internet. If you have installed the eSIM before your trip, you can usually use mobile data within minutes after arrival.
"What should I set up when I arrive in Japan?" "What should I do if the connection doesn't start?" For those who have these questions, this article introduces the steps to activate your eSIM and points to check.
Things to Check Before Activating eSIM
- You have arrived in Japan
- The eSIM installation is complete
- Your device recognizes the eSIM
- You have sufficient battery charge
If you have set up the eSIM before your trip, you can often just switch to mobile data after arriving in Japan. Please note that the conditions for starting use may vary by product, so check the instructions for the eSIM you purchased.
Steps to Activate eSIM After Arriving in Japan
- Open "Settings"
- Open Mobile Data (or Mobile Network)
- Select the eSIM for Japan
- Switch mobile data to the eSIM
- Turn on data roaming if necessary
- Check if you can connect by visiting a website or using Google Maps
The names of the settings may differ between iPhone and Android, but the basic flow is almost the same.
How to Check if You Can Connect
- Open Google Maps
- Display a website
- Send a message via LINE or WhatsApp
- Check if there are any speed issues
If you can connect, the activation of your eSIM is complete. You can use the internet during your trip as is.
Points to Check if You Cannot Connect
- Is mobile data switched to the eSIM?
- Data roaming settings
- Is airplane mode turned off?
- Restart your device
- Move to a different area with coverage
If you still cannot connect, check the setup guide or support for the eSIM service you purchased.
Frequently Asked Questions
Can I use eSIM as soon as I arrive in Japan?
If you have completed the installation of the eSIM before your trip, you can often use mobile data by switching to the eSIM after arriving in Japan. The timing for starting use may vary by product, so please check the instructions for the eSIM you purchased.
Do I need to turn on data roaming?
It depends on the eSIM service. Some eSIMs for Japan require data roaming to be turned on. Please check the guide from the provider for the settings and necessary items.
What should I do if I cannot connect?
First, check if mobile data has switched to the eSIM. Then, check the airplane mode on/off, restart your device, and verify the data roaming settings. If the issue persists, please contact the support for the eSIM service.
Should I turn off Wi-Fi?
When checking the connection, turning off Wi-Fi can make it easier to confirm if mobile data via eSIM is functioning properly.
Can I use eSIM and my regular SIM at the same time?
If you have a dual SIM compatible device, you may be able to use your regular SIM for voice calls and the eSIM for mobile data, allowing you to separate their uses.
Is it okay to activate before arriving in Japan?
The conditions for starting use vary by product. It is common to only install it before the trip and switch the communication settings after arriving in Japan, but please check the instructions for the eSIM you purchased for details.
Is there an easy way to check if I can connect?
You can check the connection status by displaying your current location on Google Maps, opening a website, or sending a message via LINE or WhatsApp.
Summary
After arriving in Japan, you can immediately use the internet by activating your eSIM and switching to mobile data. If you set up the eSIM before your trip, you can smoothly start your journey without the hassle of buying a SIM card at the airport.
- Install the eSIM before your trip
- Switch mobile data to the eSIM after arrival
- Turn on data roaming if necessary
- Check the connection using Google Maps or similar
- If you cannot connect, check the settings in order
By preparing in advance, you can comfortably use maps, transit guides, and social media as soon as you arrive in Japan. Start your trip to Japan with peace of mind.
