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Google Fi for Travelers: It’s Great, If You Can Use It

By Dave Dean Get Connected11 Comments

Back in 2015, Google announced Project Fi, its US-based cell service with a bunch of new features we hadn’t seen before.

It switched automatically between the T-Mobile and Sprint networks as needed, and you could call and text over Wi-Fi as well. Prices were cheaper than any of the competition, and you even got credited for data you didn’t use.

The clincher for travelers? Free texts, 20c/min calls and the same low-cost data rate as back home, in 140+ countries.

It had the potential to be a game-changer, except for one big problem: it only officially worked on one phone. The Google Nexus 6 wasn’t a great device, to say the least, but it was the only supported one. I said at the time that the interesting part wasn’t the specifics of the service at that point, it was what it would look like a year or two later.

Skip forward twelve months, and I finally had the opportunity to test it out. I found myself in different parts of the US for six weeks, followed by a trip to Spain and Portugal. Equally important, Google Fi now supported the company’s latest phones, and I’d just purchased the Nexus 5x model. It was time to put Fi through its paces.

Getting Set Up

The first thing to mention is while this would be a great option for travellers heading to the US who want a local SIM while they’re there, that’s not Google’s intention. Before you can even order the Fi service and SIM, your Google Pay account needs to be associated with a US address.

I’m not entirely sure whether the attached credit card in your Google Pay account needs to have that same address (I happen to have a US card, so mine was), but I wouldn’t be surprised if it did.

Project Fi plan

You can choose a different address to have the SIM sent out to, but it still needs to be in the US. That’s what I did, and the package took a few days to arrive. Even once you’ve jumped through those hoops, and assuming you have a Nexus 6, 5x or 6p to use with the service, it needs to specifically be the North American model of one of those phones.

There’s no doubt Google Fi is intended to be used only by US-based folks. I was just fortunate that my particular situation allowed me to sign up for it anyway.

I’d picked a plan when signing up — the mandatory $20/month for unlimited domestic calls and texts, plus 1GB of data for ten bucks, with tax on top. Since I already had a Google Voice number, it gave me the option of using it for Fi, or discarding it and picking a new one. It would have been nice to have two numbers, but not really necessary for most people.

After dropping the nano SIM into my phone, the Google Fi app fired up, running me through the basics of activating and using the service. Despite signing up a couple of weeks earlier, my monthly billing didn’t start until the service was active. In under a minute, my phone had locked onto a network (labelled as “Google Fi” in the corner of the screen), and I had call, text and data service.

Using Google Fi in the US

My time in the States saw me in Seattle, New Orleans, Memphis, Nashville and Miami. I didn’t go far outside the cities most of the time, although I did drive the four hundred miles from New Orleans to Memphis. Cell service in the cities was rock-solid, with decent LTE data speeds. It was spottier during the Mississippi road trip, with dead spots at several points along the I-55.

Project Fi speed test - Seattle

Call quality was good whenever I was on the cell network. When the phone switched to Wi-Fi calling, however, I often noticed delays and distortion, even on a super-fast home network. Fortunately it’s possible to turn Wi-Fi calling off from within the app, and I’d suggest doing so if you’re in areas with decent cell coverage — you’ll get a better result.

Something I didn’t realise about the Wi-Fi calling feature before starting to use it is that it’s not limited to networks you’ve used in the past. Often, as I sat in a restaurant or walked down the street, I’d see my phone connecting to a nearby network. Google says it uses known high-quality, reliable networks for this feature — although exactly how it knows about those networks is another question.

In the real world, that feature was a mixed bag. It saved on data use, but often when I went to use my phone, I’d be attached to some random network I’d walked past thirty seconds earlier, with one bar of signal and unusable Internet.

When the signal was strong, though, the automatic connection was useful, removing the need to ask for passwords or manually connect. Google automatically uses a VPN service to keep your data secure on these untrusted networks.

Speaking of data use, the Fi app (and site) is one of the best and simplest I’ve used from a cell company. It was super-clear to see how much data I’d used, with a daily breakdown. I received regular, but not excessive, notifications as I approached the 1GB mark.

When I nudged over the threshold with a day left in the billing month, I was told what the charges would be for excess use… which were exactly the same as the $10/GB rate, just charged per megabyte. If I’d wanted to buy an extra gigabyte at that point, I could have with a couple of taps, and the excess would have been credited to the next bill.

When you’re used to being ripped off by cell companies, the clear, simple charging and refunding was a breath of fresh air, especially when the service was so inexpensive in the first place.

Using Google Fi Overseas

After an overnight flight from Miami, I landed bleary-eyed for a layover at Madrid airport. Before I’d even left the plane, the Fi app had cheerily told me I was now in Spain, and advised what I’d be charged.

SMS was free, cellular calls were $0.20/minute, and data was the same $10/GB it had been in the US. Wi-Fi calls use Google Voice, so calls to North America were free, with most other countries being a few cents a minute.

Project Fi speed test - Lisbon

The Wi-Fi at Madrid airport was time-limited, so I just used my phone instead. Download speeds are limited to 256Kb/sec, and it showed — web pages were sluggish to load, and emails took a few minutes to come through. I wouldn’t want those speeds all the time, but given the low cost and ease of use, I was happy to put up with it for a while.

When I arrived in Portugal a few hours later, my phone seamlessly switched to the new provider, and Fi again told me where I was and what I’d be charged. I promptly called an Uber from the luggage carousel, then messaged my Airbnb host from the car to tell her how long I’d be.

That kind of simplicity makes a big difference when traveling, and having to do nothing beyond take my phone out of flight mode was refreshing.

One interesting quirk was international data being listed separately, by country, in the app. I initially thought that meant I was being charged in addition to the data I’d already purchased, but of course, I wasn’t — unused data from the 1GB I’d already bought would be credited back, at the same rate, at the end of the month.

Project Fi screenshot

I continued to use the Fi service for several days in Lisbon, before eventually buying a local SIM — I probably won’t be back in the US this year, so decided to cancel the service. If I could have kept paying the same amount for the same service with a local number and unthrottled data, however, you can bet I would have.

Canceling was even easier than signing up — it took a couple of clicks, then waiting a day for the confirmation to come through. My number returned to Google Voice without a hitch.

But I Don’t Have a Supported Phone!

So, Google Fi is great for anyone based in the US, who owns a current model of Google phone or one of the few other supported handsets. What about everyone else, though? What if you’re one of the vast majority who live overseas, or are from the US but own a different device?

Well, that’s the problem. As mentioned above, most non-US folks won’t be able to sign up for the service, even if they’re taking a trip there. It’s not available for signup anywhere else in the world, which is a great shame.

For Americans without the right type of phone, there is a glimmer of hope. If you can find someone with a supported device who can activate the Fi SIM for you, it will apparently then work in any other GSM phone.

You’ll hit some limitations, though — it’ll be T-Mobile only, with no switching to the Sprint network or Wi-Fi calling. You’ll likely also struggle to get much support from Google if you have problems, and not all GSM phones support T-Mobile’s cellular frequencies.

Still, for light to moderate data users who live in areas with good T-Mobile service, it might be worth considering if you regularly travel internationally. It’ll likely work out cheaper than T-Mobile’s own Simple plan, which is the only other way to get affordable global roaming for US customers. Whether it’s worth the effort and lack of support, though, is up to you.


As you can probably tell, I was very impressed with Google Fi, and was genuinely sad to cancel it after leaving the US. It worked better than expected, and although the Wi-Fi calling still needs tweaking, it’s not an essential part of the service.

Data speeds were fast within the US. Prices were lower than the competition for my light/moderate use, even before any credits for unused data kicked in. The app and website were some of the best I’ve used from any cell company, and cheap, simple international roaming was the icing on the cake.

If I lived in the US — somewhere that had decent T-Mobile or Sprint coverage, at least — I’d use Google Fi even if I didn’t travel. Being able to have cheap or free calls, texts and data in 140+ other countries with zero effort would make it a no-brainer.

If you can use it, Fi is a great service. All we need now is for it to work on more phones, and to be able to sign up and use it in other countries, with local numbers.

At that point, it really will be a game changer.

Main image via Dele Oke

About the Author
Dave Dean

Dave Dean

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Founder and editor of Too Many Adapters, Dave has been a traveler for 25 years, and a geek for even longer. When he's not playing with the latest tech toy or working out how to keep his phone charged for just a few more minutes, he can probably be found sitting in a broken-down bus in some obscure corner of the planet.


  1. Avatar

    Thank you for sharing this! I recently started using Project Fi, haven’t traveled abroad yet, but will soon. I have a question: if I’m in Portugal and I send a message to or call someone who has a local number, will that person be charged an outrageous fee for talking to a US number? Thank you!

    1. Dave Dean Author

      I doubt they’ll be charged anything to receive — it’s rare outside the US to be charged for incoming calls and texts. If they reply to the text/call you, however, they’ll pay whatever their international rate is.

      That, plus the throttled data, was ultimately the reason I decided to get a local SIM and cancel the Fi service — I may be in Portugal for quite some time, and I don’t want people with local numbers to have to pay a small fortune to contact me.

  2. Avatar

    Dave – nice review. Funny timing; I just got Project FI this month ahead of a trip that took me to Kenya and Tanzania with a stopover in Qatar both directions.

    I had high hopes after a very good US experience leading up to the trip, and my outbound layover in Doha saw quick registration and LTE speeds even. The rest of my trip was not so fortunate.

    Tanzania connectivity was okay in airports and cities, although it took a number of efforts and a call to support to get help with the process of switching around airplane mode, automatic vs. specific carrier selection, playing with network types, etc. The unfortunate thing for me was that the house we were staying in only worked well with one carrier, and I found that while I always had voice/SMS access, I rarely had data there — and when I did, I could never (ever) get it to work as a tethered device, which was a big hit to my planned productivity.

    Kenya was far, far more problematic. At launch, Kenya wasn’t on the list of supported countries. This year, it is. And indeed, Project Fi told me upon landing at Nairobi that I was in a Project Fi territory.

    Except, I wasn’t. None of the processes that worked in Qatar or Tanzania worked at all in Kenya. Automatic and specific registration failed/errored out on Safaricom, Airtel and Orange/TKL each time. Unlike Tanzania, I didn’t even get voice/SMS access at all. It was emergency calls only my whole time.

    Well, that is, until I just went out and bought a Safaricom SIM.

    I was really frustrated that despite opening a support ticket via email the night I arrived, I didn’t receive a reply at all by the time I left. And, when I was caught up in the impact of a pilots strike in Kenya, I was basically phone-less, since I’d given the Safaricom SIM back to the work colleague who registered me before going to the airport.

    I’d rather Google have a bit better handle on the usage in the wider range of “supported” countries before it goes further in marketing the services.

    1. Avatar

      Correction — I searched again and Google *did* reply, in fairness. I just missed the email. Still, the form reply walked me through all the standard troubleshooting. That. Wasn’t. It.

      Great idea, might work well in Europe and other major destinations like Canada. (And, still eager to try in China.) But I’ll be skeptical using it internationally. (Oh, and I forgot to mention — on my way back through Doha, this time I got voice/SMS but no data….)

    2. Dave Dean Author

      Super-useful info — thanks Kevin! I noticed that African coverage was still pretty sparse… and apparently even sparser than the coverage map suggests!

      I guess the takeaway from this is that people should be prepared for the possibility of needing to buy a local SIM, particularly in places they haven’t been before and/or are a bit more off the beaten track for US travellers.

  3. Avatar

    Great post. It help me make my decision. I’m an expat living in Saudi Arabia and now just use my Project Fi SIM. One correction though, my phone is not a North American model. I bought the phone in KSA and had the SIM sent here through a family member. I will get a little more testing in when I travel to Europe and North America in a few weeks.

    1. Dave Dean Author

      Glad it helped! Regarding the North American model — it’ll need to be that model to get the automatic Sprint/T-Mobile handover in the US. I got the impression from the documentation that you couldn’t activate the Fi service from a non-North American version either, so it’s good to hear that’s not the case!

  4. Avatar

    Hi Dave,

    Thank you so much for the post. If I’m a US address holder moving to Chile for six months and then France for seven, would you recommend Project Fi or getting a new sim in each country? For what it’s worth, people mostly use Whatsapp to talk in Chile, so I’m not too worried about being stuck with my US number, there.

    Thanks for your advice in all these things!

    1. Dave Dean Author

      I’d recommend local SIMs in your situation. They’ll likely be cheaper overall, and also give a local number for other people in the country to call you on.

  5. Avatar


    Not sure if you have more information to share, but I would like your opinion on using Project Fi in my circumstances…

    I will be in Ecuador for 10 months per year for the next few years. I need to run my business in USA from Ecuador, so I want to keep my original number. I will field between 5-20 calls each week. Then, for 2 months I will be in the US for work.

    $0.20/minute is no problem. But the main carriers’ intl plans are ridiculously high. Hoping Fi can help.

    1. Dave Dean Author

      Google Fi will help you in this situation for sure, but it’ll still be at least $30-$40/month by the time you pay the basic $20/rate, plus some data and calls. There’s also another, even cheaper option if you prefer it.

      You could port your existing US number to Google Voice, and then use the Google Voice or Google Hangouts apps on your phone to make and receive calls and texts (more info here). Calls and texts to US and Canadian numbers are free from anywhere, and it’ll work wherever you have a data connection — to help with that (and get a local number, which will be more useful in Ecuador than a US one), buy a local Ecuadorian SIM card with data and use it for the 10 months of the year you’re there.

      When you get to the US, buy a SIM card there and use it instead. Either way, your current US number will continue to work via the Voice/Hangouts app. You may even be able to buy some sort of long-expiry package for the US SIM, so it doesn’t expire while you’re away, and you can just top it up and use it whenever you return.

      Hope that helps!

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