Japan Travel eSIM - Instant 5G Data Plans for Travel
Japan Travel eSIM - Instant 5G Data Plans for Travel
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What if I use more than my package?
What if I use more than my package?
No need to stress—we’ve got you covered!
If you use up your data for the day, your speed will slow down to 256kbps, but don’t worry, that’s still enough to send messages and use maps.
And the best part? It resets at midnight, so you’ll have full data again to use however you like!
Not sure how much data you need? Use our data calculator to get an estimate or get our truly unlimited eSIMs!
What makes our unlimited plans different?
What makes our unlimited plans different?
Our Unlimited Plans = Truly Unlimited – No Limits, No Throttling.
Unlike other providers who hide behind "fair usage policies" or "so-called unlimited" plans that secretly throttle your speeds once you’ve used too much.
Our unlimited data plans actually deliver what they promise.
Enjoy lightning-fast, un-throttled internet, no matter how much you use, with zero hidden tricks.
Stay Connected in Japan & Tokyo with Premium eSIM Data Plans
Get instant internet access across Japan and Tokyo with our high-speed eSIM card. No more expensive roaming charges or hunting for WiFi – enjoy seamless 5G/4G/LTE connectivity from the moment you land.
Why Choose Our Japan Tokyo eSIM?
- Instant activation via QR code – no physical SIM card needed
- 5G/4G/LTE speeds across Japan's major networks
- No roaming fees – save up to 90% on international data
- Easy setup – scan QR code and connect in under 5 minutes
- Reliable coverage in Tokyo, Osaka, Kyoto, and major Japanese cities
- Easily reachable customer support for your Japan travel needs
How Your Japan eSIM Works:
- Purchase your Tokyo travel eSIM data plan online
- Receive QR code via email
- Scan QR code with your smartphone camera
- Install your travel eSIM
- Enjoy fast internet throughout Japan
Perfect for Japan Travel:
Whether you're exploring Tokyo's bustling districts, visiting Kyoto's ancient temples, or discovering Osaka's vibrant food scene, stay connected with friends and family. Our travel eSIM works seamlessly across Japan's top mobile networks, ensuring reliable coverage for navigation, social media, work calls, and travel apps.
Frequently Asked Questions:
- Coverage area: All major Japanese cities including Tokyo, Osaka, Kyoto, Yokohama
- Speed: Up to 5G where available, 4G/LTE nationwide
- Data plans: Multiple options from 1GB to unlimited data
- Validity: Plans available from 5 days to 30 days
- Activation: Instant activation upon arrival in Japan
Start your Japan travel with reliable internet. Purchase your travel eSIM today and never worry about being disconnected from the world.



How does KoalaSim's eSIM work?
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Select the package that works for you!
Check CompatabilitySelect the data size and the number of days for your trip to get your eSIM with data. Remember to check if your mobile device is compatible.
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Check how much data you need!
Find out how much data you needUse our easy-to-use data calculator to find out exactly how much data you need. This way, you can avoid running out or paying for more than necessary!
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Receive your eSIMs
Receive your QR code or manual installation code within 12 hours of purchase with easy-to-follow device specific installation steps.
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Install your eSIM
Install your eSIM within 60 days before the trip, activate the data once you have arrived at the destination to get connected straight away.
- SSusanVerified ReviewerI recommend this productRated 5 out of 5 stars7 months agoExcellent for the price
Took a chance for my 2 week trip in Japan even though I usually go with another eSIM since it was significantly cheaper.
Had no issues at all during my trip, even when I was out in the country side.
Was this helpful? - JJMVerified ReviewerI recommend this productRated 5 out of 5 stars6 months agoWorked like a charm
Im not a heavy data user, so i got 1gb. would just connect to wifi where i could and never had an issue
Was this helpful? - CChristyVerified ReviewerI recommend this productRated 5 out of 5 stars7 months agoJapan was amazing
Tokyo and Kyoto was amazing. would love to visit osaka next time
Was this helpful? - WWiatVerified ReviewerI recommend this productRated 5 out of 5 stars7 months agoGreat and easy to use
Preferred how these sims can be set up as soon as you buy, rather than having to set it up once you touchdown. I always got a bit anxious about it not working and being left stranded
Was this helpful? - WWVerified ReviewerI recommend this productRated 4 out of 5 stars7 months agowent to niseko
Worked 90% of the time. would drop out every so often, but considering where i was, it was to be expected
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