I have used it for 4 years. The only place I had trouble was in Vietnam. It's seamless and support has gotten better. I have used it in North America, Europe, Asia and Central America. You will want it in Japan when you land. There are other options, some cheaper, but it's hard to use another once you install it because it's so easy and flexible.
LA world business traveler, 19 Feb 2026
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The eSIM was very easy to install and…
The eSIM was very easy to install and activate. Once in a country for a few hours it worked well however the length of time it takes to find a network / be of use is somewhat problematic, particularly when needing to contact those who I was going to stay with etc
Rachel, 19 Feb 2026
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The service and the speed has been…
The service and the speed has been perfect. When I travel anywhere again I will ise Ubigi for sure.
Casey Ellis, 19 Feb 2026
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Coverage area should be improved
Didn't work in many remote places where other networks were active. The coverage area can be improved. Otherwise all good.
customer, 19 Feb 2026
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Kept me in touch
Great service for my entire trip to Okinawa. Not only great for calls, I was also able to check my emails, social media and web surfing. Transitioning from my regular provider to this eSIM was seamless. Will definitely use again on my future trips.
Yolanda Easter, 19 Feb 2026
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Top utilization
Top utilization
vanderschrick Thierry, 19 Feb 2026
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Recommend!!
Stable and great connection, the best deal I have found so far :) おすすめします!
customer, 19 Feb 2026
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Easy to use, good support
I switched my phone recently and needed help to install the esim. Support was available online to fix my issue.
iamagolfer, 19 Feb 2026
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Excellent esim for Japan
Once started and installed, very easy to use and great coverage throughout Japan
Andrew G, 19 Feb 2026
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It was easy to install the eSIM and…
It was easy to install the eSIM and purchase data bundles. I have now used Ubigi in Japan, UK and Marrakech in the last year.
Phyllis Anne Porter, 19 Feb 2026
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Worked great in Mexico and Philippines!
Worked great in Mexico and Philippines!
Aleks, 19 Feb 2026
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Easy to install and have good…
Easy to install and have good accessibility!
customer, 18 Feb 2026
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Great service
Great service, will definitely use it again on our next travel.
Valerie Joyce Mendoza-Keh, 18 Feb 2026
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Costa rica
Was supposed to start working as soon as we got to Costa Rica but for some reason it took a couple of days but once it activated it has been working really well with a strong signal in nearly all the places that we've visited so far, would definitely recommend!
Neil Snape, 18 Feb 2026
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Works everywhere I have been in Japan…
Works everywhere I have been in Japan would highly recommend