No, the eSIM itself does not drain the battery of your mobile device. It consumes the same as a SIM card when using cellular data. However, being connected to two networks uses more energy than being connected to one network. The same goes for using your eSIM (or SIM) for sharing personal Hotspot, this would naturally drain your battery.
Explore Ubigi eSIM data plans for seamless connectivity worldwide!
Install once, stay globally connected for life with a single eSIM, compatible with all eSIM-enabled devices : iOS Phone, iPad OS, Android, and Windows 10 and 11.
Are you a company with teams on the move?
Manage your employees' LTE/5G connectivity on smartphones, tablets, laptops, and hotspots while maintaining complete control over your costs.
Explore Ubigi eSIM data plans for seamless connectivity worldwide!
Install once, stay globally connected for life with a single eSIM, compatible with all eSIM-enabled devices : iOS Phone, iPad OS, Android, and Windows 10 and 11.
Are you a company with teams on the move?
Manage your employees' LTE/5G connectivity on smartphones, tablets, laptops, and hotspots while maintaining complete control over your costs.
Great
Based on 50860 reviews on
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Ubigi worked seamlessly from the moment…
Ubigi worked seamlessly from the moment I landed in Japan, with reliable connectivity even after getting my local SIM. Highly recommended!
customer, 06 Nov 2026
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Excellent service
Excellent service, all the time that I needed to use the data it was available. The only place that I was not able to use the service where in Isla Saona.
customer, 06 Nov 2026
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It’s good once you figure it out.
I didn’t have signal when I landed to my destination. It’s part my fault. I didn’t know how the eSIM works and didn’t finish setting up my account on the app. I wasn’t sure if it will start activation. Also my understanding was I have a hotspot but it doesn’t work with my other phone.
customer, 06 Nov 2026
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Easy to install Easy to use
Easy to install Easy to use, good tarif
Jean-Marc Delloye, 06 Nov 2026
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So far, so good
So far, zero issues, my connection worked pretty well even in remote areas. Highly recommend for travelers
Silvana, 06 Nov 2026
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Very good internet connection…
Very good internet connection everywhere in Japan.
Tom, 06 Nov 2026
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Satisfied Customer
Good, reliable internet service.
David, 06 Nov 2026
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Easy and Secure
Easy and Secure
R P, 06 Nov 2026
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Worked great for my Japan trip!
Worked great for my Japan trip!
customer, 06 Nov 2026
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First time using Ubigi
First time using Ubigi , and eSim. used it for 6day road trip in Japan. Its excellent for data use in road navigation. some places in the rural area may have weaker or lose connection intermittently e.g. in some shops, but if you turn on/ off the connection, it works again. We still highly recommend it. Its value for money. Will definitely use it for future trips!! Thank you!!
GOH JUDY, 06 Nov 2026
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A spacious clean room with 2 Llarge…
A spacious clean room with 2 Llarge beds
Amenities comb razor q tip shower body towel
Free drinking water tea bag
Free lobby coffee
Pajama slippers
Great people front desk and restaurant
Peter Leung, 06 Nov 2026
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Good All Round Service
Easy to set up and use. I deal for traveling.
Suzanne, 06 Nov 2026
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constant connection
constant connection
Leonard Frankscustomer, 06 Nov 2026
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The esim was very easy to purchase and…
The esim was very easy to purchase and install. We have been using the esim for our trip and haven't had any problems or major drop outs in service. We've would definitely use Ubigi for our next trip.
customer, 06 Nov 2026
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Excellent internet service
Excellent internet service! The connection is fast, stable, and reliable. Everything works smoothly without any interruptions. Very satisfied with the quality and overall experience. Highly recommended!
Ina, 06 Nov 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.
How to check eSIM compatibility
How to check carrier unlocking