Traveling internationally can be an exciting adventure, but it’s no fun when you arrive and realize your eSIM for Japan isn’t working. Suddenly you’re without a reliable mobile connection in a foreign country. Before your trip, it’s essential to learn how to troubleshoot any potential eSIM issues to ensure smooth travel connectivity. This guide will cover the ins and outs of eSIM for Japan, walk through possible reasons it may not be working, and provide actionable solutions to get you connected.
Overview of eSIMs for Japan
An eSIM, or electronic SIM card, provides cellular data without needing a physical nano-SIM card. eSIMs are directly embedded into compatible devices and activated remotely with a QR code. For Japan, eSIMs offer flexible, short-term data plans tailored to travelers. With easy setup and instant activation, eSIMs allow you to focus on your trip, not on connectivity logistics.
Yet despite the convenience of eSIMs, you may encounter issues that prevent your eSIM from activating properly in Japan. Let’s explore some potential causes.
Why Your Japan eSIM Might Not Be Working
There are several reasons why your Japan eSIM may fail to connect after arrival:
Incorrect Installation or Activation
The most common reason an eSIM doesn’t work is that the installation and activation weren’t completed correctly. For an eSIM to function, you must carefully follow all setup instructions provided with your eSIM. Rushing through or skipping steps can prevent successful activation. Be sure to fully complete installation and activation while still in your home country before departing on your trip.
Damaged or Faulty eSIM
On rare occasions, an eSIM itself may be damaged or defective, preventing it from connecting to networks abroad. Some signs of a faulty eSIM include the inability to scan the eSIM QR code, error messages during installation, or failure to activate after repeated attempts. Contact your eSIM provider for troubleshooting or replacement if you suspect the eSIM itself is the issue.
Unsupported Device
While eSIM compatibility grows continuously, some older model smartphones still don’t support eSIM functionality. Before purchasing an eSIM, always verify your exact device model is listed as compatible by your eSIM provider. Using an eSIM on an unsupported device will prevent successful activation.
Network Coverage Issues
Occasionally users may encounter network coverage problems in specific areas of Japan. Remote, rural, or mountainous regions tend to have less robust coverage. If your eSIM won’t connect, check coverage maps for your location. You may need to travel to an area with better reception. Inside buildings, changing locations or turning Airplane Mode on/off can sometimes help.
Out of Data
eSIMs come with preset data allotments. If you used up all your high-speed data ahead of your trip’s end, your connection may be throttled or suspended. Check your data usage and purchase more if needed. Some providers offer in-app top-up options.
eSIM Expired
How to Buy eSIM for Japan the Right WayJust like a regular SIM card, an eSIM also has an expiration period, usually 7, 15, or 30 days after activation, depending on the plan you purchased. If your trip dates shift and your eSIM expires before you depart, it will no longer work. Reach out to your provider to extend the validity period or order a new eSIM.
Automatic Network Selection Issues
Some users experience issues with automatic network selection that prevent the eSIM from connecting. Try manually selecting the network. If that doesn’t work, turn Airplane Mode on, reset network settings, then reconnect.
How to Fix a Non-Functioning Japan e-SIM
If your e-SIM refuses to activate in Japan, don’t panic. Here are some steps to troubleshoot and restore your mobile connectivity:
Confirm Installation and Activation Steps Were Followed
Carefully review the setup instructions provided by your Japan eSIM company. Make sure each step is properly completed, as missing just one can prevent the eSIM from working. If needed, uninstall and then reinstall the eSIM profile by rescanning the QR code.
Contact eSIM Provider for Assistance
Reach out to your eSIM provider’s customer support if you’re still unable to activate the service. They can walk through troubleshooting, offer tips for your specific device, or replace defective eSIMs as needed. Don’t hesitate to ask questions.
Test eSIM on a Different Device
If possible, install your eSIM on another unlocked smartphone or tablet. This helps determine if the issue lies with the eSIM itself or your original device. If it activates on another device, your smartphone is likely the problem.
Update Device Software and Reset Network Settings
Ensure your device software is updated to the latest OS version. On iPhones, toggling Airplane mode on and off can kickstart the connection. You can also reset network settings which forces the device to re-scan for networks.
Switch Locations and Check Coverage Map
Poor signal reception could be the culprit. Move to another part of Japan with better coverage, particularly in urban centers where reception tends to be more reliable. Refer to your provider’s coverage map if issues persist in a certain area.
Purchase Additional Data or Extend Validity Period
A lack of high-speed data or an expired eSIM can prevent mobile connectivity. Check your data balance and renewal date. Add more data or contact support to extend validity if needed.
With some focused troubleshooting, you should be able to get your Japan eSIM up and running. Reach out to Asian eSIM for any issues obtaining your eSIM or questions about finding the optimal data package for your travel needs and budget. Just follow the tips in this guide, and you’ll be back on the mobile grid in no time.
How to Buy eSIM for Japan the Right Way
Since connectivity issues are no fun, it’s wise to select adequate data and duration when purchasing your Japan eSIM. Follow these tips for choosing the right plan:
Estimate Your Data Usage
Consider your typical cellular and WiFi data use at home to estimate your abroad needs. More remote destinations and heavy video streaming require higher data. For light use, start with a 1-3GB monthly plan. Moderate and heavy use is 5-10GB. Get 20GB+ for constant hot-spotting and media.
10GB & 15 Day Prepaid Data Plans
Account for Peak Versus Off-Peak Times
Data needs often fluctuate by time of day. Are you constantly roaming during busy sightseeing hours then connecting to WiFi back at your hotel? Boost data for peak daytime usage times. But if you primarily use data for evening social media, save with a lower data plan.
Match Duration to Trip Length
Avoid wasting data by matching plan duration to your travel dates. Japan eSIMs offer flexibility with durations ranging from just 3 days to 30 days. Optimal plans last your entire trip with a few extra days as a buffer.
Compare Speeds and Coverage
Research Japan network speeds and coverage ahead of time. If you plan to frequently use data while traveling rural areas, choose a provider offering the most extensive coverage and fastest nationwide speeds.
Know Your Budget
Finally, pick a data amount and duration that fits your budget. With Japan eSIMs starting around $5, you can find a plan suiting nearly any price point and need. Prioritize data over duration if uncertain between plans.
Choosing the right eSIM data package takes a bit of pre-trip planning. But you’ll lock in reliable connectivity for your whole Japan getaway when you select an adequate high-speed data amount and duration for your specific usage and trip details.
Verdict
Getting disconnected abroad is a hassle no one wants to deal with. By understanding what causes Japan eSIM issues, trying some troubleshooting steps, and choosing the right data plan for your needs, you can avoid activation struggles and unlock seamless connectivity with Asian eSIM. Enjoy your travels with mobile data that just works. If you have any other questions about using an eSIM in Japan, leave a comment below.
FAQ About Japan eSIM Not Working
Your eSIM may not be working due to incorrect installation, using an unsupported device, expired eSIM, insufficient data, or coverage issues. Contact customer support for troubleshooting help.
English 
Japanese 
Indonesian