Ubigi: Travel eSIM mobile data

• Free

Last verified 28 Jul 2026

• Free to download

Last verified 31 Jul 2026

4.6 9579 ratings · App Store

1. 5/5Great app for flexible and cheaper international roaming

   This was my first time using an eSIM (device is an iPhone 12) and Ubigi worked great on a recent month-long trip to Italy. I was able to set it up be while already abroad (in Serbia) without any issues, the step by step instructions Ubigi offered worked as written. I bought a country specific 10GB/30day plan. Reception in Italy was solid - LTE in nearly all places except when truly out in the boonies and even there it was usually 3G instead of no reception at all, overall performing as well as I would have expected a locally bought physical SIM to have done. Given how expensive US carrier roaming rates have become (I have AT&T) and not wanting to waste time looking for a local SIM provider, etc, I’m very glad to have found Ubigi and look forward to using their services on future trips abroad as well. One caveat is that this is a data only plan and while WhatsApp text and calling worked just fine, I had issues trying to call local numbers via Skype. Not sure if that’s specifically a limitation on this kind of data plan but I wasn’t able to find a good explanation otherwise. IMessage would also sometimes work via the data network and other times try to send as SMS and therefore fail. A few texts I only received when I reactivated my primary SIM stateside but that wasn’t an issue for my needs. I also didn’t bother with trying WiFi activating my primary US cell number as Id read some issues that are carrier (AT&T) specific and may still trigger roaming charges that I wanted to avoid, and so iI can’t comment on how that specific feature works on an eSIM like Ubigi.

   D Tubales · 28 Jul 2026

2. 5/5Worked Like a Charm

   My experience is based on using Ubigi on a 3 week trip to Japan on an iPhone 15. Following the instructions were easy. I made sure to prep my phone a few days before my departure. Before my flight took off from the States, I made sure to turn AT&T off. By off, I mean everything possible set to off. If you don’t, your cell provider will likely rack up ludicrous daily charges on your bill. When I arrived in Japan, I switched to the Ubigi eSIM in settings and turned on data roaming for it. After a minute, I was connected and was able to use the internet. I bought 10 gigs of data which more than lasted my trip with relatively high use. I played Pokémon GO often and used Maps and Google, but made sure to reserve video streaming for when I was on WiFi. Please remember you won’t be able to make calls or texts while using this, so use an app like Facebook Messenger or Snapchat to communicate with people if you have to. I also got signal just about anywhere! Connection was mostly good in the mountains of Yamaguchi. I also got great service out in the boonies of Gunma. Naturally, connection was also flawless in Tokyo. I did have a hiccup where I couldn’t connect to anything while I was in Yokohama, but I slept on it and it worked in the morning. I will be using this again for my next trip to Japan!

   MintL0ver9 · 28 Jul 2026

3. 2/550/50

   I’ve been told this works great if there are no mishaps. But when there’s issues, there doesn’t seem much effort to help troubleshoot beyond the standard basic screenshots already listed on the site. I bought an esim for Japan and it’s been installed but I ran into issues with the connectivity and being stuck on the “resume account creation” most likely due to the lack of connectivity. I have restarted, switched every possible combination of sim/esim/Wi-Fi on and off and submitted an email detailing this complete with screenshots of my esim details to show to double check the details. The reply back I received was the same screenshots used to show a user to how to create an account by installing the esim. When I replied back that I have done this & if it can’t be fixed further then I would like a refund and I got hit back with “ we invite you to reboot your device and check again the steps on the previous email” with no mention of starting a refund process either. I’ve wasted two days of my trip in the beginning trying to figure this out with nothing resolved and now I’ll have to spend more money to get something else. Rating it for 2 stars because I actually got a reply back and it was at least within 24 hours each time.

   Fishiepower · 28 Jul 2026

4. 1/5Horrendous. Try a different provider

   The worst customer service experience imaginable. I will never use Ubigi again. I submitted a message through their website after I spent well over an hour trying to connect to the eSIM I purchased for Japan- the country boldly advertised front-and-center here in the App Store. The plan was already activated and should have worked, but didn't. I followed every troubleshooting step they offer in the FAQ to no avail, so I reached out to them for help or a credit. It took them almost a week to reply, not before demanding that I repeat what I already sent them. I've never been so disregarded and disrespected in my life. It's as if they didn't even read the message. All they said was basically "It must be a you problem, but thanks for buying a plan." I've spent well over $200 in total with them throughout my travels, and I did not deserve the cold reply I received. There are way too many other eSIM providers (more affordable and reliable ones). If you have any issues, they won't help you or even read your message. I've already taken my loyal business over to Airalo and have had no issues with them. You should do the same, lest you enjoy wasting money and being brushed off like you don't matter.

   jayemarie222 · 28 Jul 2026

5. 5/5Simple, high speed cellular data plan for Europe travel

   I wanted an affordable high speed data plan during a trip to UK and Italy. I was planning to buy a physical SIM but saw an article about Ubigi in the WSJ and decided to try it. Got great coverage and speed in UK (London, Oxford and Stonehenge), and in Italy (Rome and Venice). It was particularly useful since I used maps a lot while walking around Rome and Venice and when I was using public transport in London. It also worked well when I used my phone as a hotspot for another phone. The setup of eSIM, selection and payment of the plan in the US before my trip was very simple. The price was reasonable. So I was able to use it as soon as I landed in London. Much more convenient than having to use a physical SIM.

   VijayMRao · 28 Jul 2026

4.0 7075 ratings · Google Play

1. 5/5

   This is the 2nd time I have used Ubigi for when I am abroad, easy to switch onto the esim, really good Internet connection and speed. Would recommend

   Samantha Mills · 31 Jul 2026

2. 1/5

   signal worked okay first 2 days, got signal for 30 minutes to an hour and it reset after 2 minutes and so on, after that I get signal 2 minutes for every hour. wouldn't recommend to my worst enemy

   Pinrockers 1 · 31 Jul 2026

3. 1/5

   Actually would give no stars, couldn't even use it without also using my phone service. I wanted to avoid roaming charges, but that's not possible with this esim. Don't waste your money!

   Amy Dennison · 31 Jul 2026

4. 5/5

   Excellent eSim. No problems with connecting in various countries, and great rates

   Nicole Moosmuller · 31 Jul 2026

5. 5/5

   excellent 1 esim travel anywhere.

   James Carre · 31 Jul 2026

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• 3.8.2 · 24 Jul 2026