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I would rate the cellular data service 3 stars, but thanks to customer service 4 stars!
I would rate the cellular data service 3 out of 5 stars overall. However, the prompt and outstanding response from customer service was remarkable, which is why I’m giving it 4 stars overall.
The service in Spain was noticeably better than in Italy. Overall, though, the connection was often laggy and not as fast as I had expected. Hopefully, this will improve as Ubigi expands their partnerships with more reliable mobile networks.
customer, 01 Jul 2026
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Works well
Works well, dropped a few times.
customer, 01 Jul 2026
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work well
work well, you actually need internet to activate it.
diego, 01 Jul 2026
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A stable and fast service network
A stable and fast service network
customer, 01 Jul 2026
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Excellent coverage and easy activation
Excellent coverage and easy activation
Sam, 01 Jul 2026
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Good coverage and speed
Good coverage and speed
customer, 01 Jul 2026
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I used Ubigi eSim in Japan and it…
I used Ubigi eSim in Japan and it worked perfectly. It was pretty easy to use especially since it was my first time. Will definitely keep using it and would recommend it.
Kevin Q, 01 Jul 2026
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The data was great connection was good…
The data was great connection was good lasted 2 weeks of our holiday
Sam Hughes, 01 Jul 2026
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Excellent
Excellent. Perfect for my short term use. Haven't had any issue so far. Easy activation
customer, 01 Jul 2026
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Very good network around japan
Very good network around japan
customer, 01 Jul 2026
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Everything was smooth
Everything was smooth. From the setup to the end of my trip. The instructions given on how to make sure my phone was active when I arrived in Japan was just right. We had no issues getting connected the minute we landed. The service was great all throughout the trip. Mostly 5G some LTE here and there but for the most part fast speeds throughout. I’d recommend Ubigi to anyone traveling to Japan as it’s was very cost effective the we were connected the entire time.
customer, 01 Jul 2026
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Great connectivity through Europe
Great connectivity through Europe
Paul L, 01 Jul 2026
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We are on a journey in japan and zero…
We are on a journey in japan and zero issues. Great.
MICHELA, 01 Jul 2026
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Long time user
I've used Ubigi for a number of years and while occasionally they may not be as cheap as other eSIM options or may not have the exact combination of data + time period I need, they are my go-to for top-notch service, as they always seem to partner with quality service providers in any country they service. I don't think I've ever had a service issue using one of their eSIMs, and it's super handy to just keep the Ubigi eSIM perpetually in my device and just re-activate it as needed when I go overseas as opposed to constantly needing to activate new ones as from other services. I've used Ubigi in multiple countries including Japan, Vietnam, USA, and probably other countries I've forgotten. The only thing that I don't like is that it only charges in USD so I'm stuck with currency conversion and a currency conversion fee, however this is what it is - the process of choosing and paying is simple and easy and I have frequently bought an eSIM just before my flight out, to have this ready to go once I land.
KA, 01 Jul 2026
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Great experience
Great experience
customer, 01 Jul 2026
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How to check eSIM compatibility
Smartphones / Tablets:
Dial *#06#. → If an EID number appears, your device is eSIM-compatible.
Windows 10 / 11:
Press Windows+I. Go to “Network & Internet” → If you see "Cellular", your PC is eSIM-compatible.
How to check carrier unlocking
iPhone / iPad:
Go to Settings > General > About. Scroll to Carrier Lock. → If you see “No SIM restrictions”, your device is unlocked.
Android:
Go to Settings > Network & Internet > Mobile network. Disable Automatic network selection. → If multiple networks appear, your device is unlocked.
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How to check eSIM compatibility
How to check carrier unlocking