Google Fi is a US phone plan that roams. A travel eSIM is a prepaid data pack. Compare them as those two things, not as two eSIM stores.
Full write-up of the carrier itself: Google Fi provider review. Side-by-sides with the data-only brands we track: Fi vs Nomad, Fi vs Saily, Fi vs GoMoWorld, Fi vs GigSky.
The short answer, by traveler type
Eight common situations. Fi is a yes only when the thing you need is a US phone plan that also works abroad.
Live $/GB: Fi is always $10, travel eSIMs are not
Fi international data is $10 per GB on every row. The travel column is the cheapest plan we track for that destination, except where we label the row an entry sample.
Those multiples are why a data-heavy week in Thailand or India should not run on Fi data. The same table is why a light Flexible month can still be rational if what you are buying is the US plan, not the gigabytes. For a trip-shaped total, use the cost calculator.
The monthly Fi plan menu
Four US phone plans. International roaming is included; you are not buying a travel pack. Hotspot numbers below are the plan allotments. International hotspot is supported on iPhone on Flexible, Unlimited Plus, and Unlimited Premium (Personal Hotspot APN h2g2-t; may need re-entry after reboot).
Flexible is the only tier that bills $10/GB. The unlimited tiers trade a higher monthly base for a high-speed bucket. None of these is a one-trip SKU. Details and the residency rule live on the Fi provider page.
Scenario math: monthly plan vs one trip
Four ways the same $10/GB rate shows up in real trips. We only use prices from the table above and the Fi menu. We do not invent a 10 GB Europe travel-eSIM SKU.
A. Europe, about 10 GB, one trip
If you do not already live on Fi, do not open a US phone plan for a single Europe trip. The Flexible cap ($60) is still a month of carrier service. The UK/France entry sample we list is $3.99 for 4 GB / 7 days — not a 10 GB equivalent, which is why the cost calculator and plan finder exist.
B. Keep the number, buy data (dual-SIM)
This is the dual-SIM case: Fi remains the default voice and SMS line so banks, 2FA, and callers still hit your US number. Cellular data moves to the travel eSIM. The incremental cost of the trip's data is the travel plan, not $10/GB. Same pattern on Canada, India, Japan, or Thailand.
C. Light month on Flexible
Light travelers who want one US bill and only sip data can stay on Flexible and skip a travel eSIM. The moment the trip looks like Canada 50 GB or India 55 GB, Flexible's $10/GB meter is the wrong tool — go back to scenario B.
D. Heavy Canada or India
Head-to-heads if you want the rest of the product comparison, not just the rate: Google Fi vs Nomad, Google Fi vs GoMoWorld, Google Fi vs Saily.
Destination, days, and gigabytes in. Live travel-eSIM prices out. Fi stays $10/GB either way.
Fi-only, Fi plus a travel eSIM, or skip Fi
Three setups. Pick one on purpose so the phone does not pick roaming for you.
- You are a US resident who needs voice and SMS on a real US number
- Trips are frequent and short, and buying a pack every time is the hassle
- Usage stays light enough that Flexible ($20 + $10/GB, ~$60 cap) is the whole bill
- You already pay for Unlimited Plus or Premium and the trip fits the high-speed bucket
- You are not a US resident
- You will be abroad 90+ days as your primary use
- The trip is a cruise or at-sea itinerary (GigSky, not Fi)
- You only need one-trip data and do not want a US phone plan
The dual-SIM middle: Fi plus a travel eSIM
Use this when Fi is already your US plan (you want the number) and the trip is data-heavy enough that $10/GB hurts. Fi stays on for voice and SMS. A travel eSIM carries data. That is the same pattern as any home line plus a travel pack — Fi is just the home line. International hotspot on iPhone is supported (Personal Hotspot APN h2g2-t); the reason for a travel eSIM here is price, not a hotspot gap.
- Leave Fi as the default voice and SMS line
Outbound calls, iMessage / FaceTime, and bank texts stay on the US number. Do not move default voice onto the travel eSIM.
- Set the travel eSIM as the cellular data line
All maps, apps, and hotspot traffic should ride the travel plan. Install it at home on Wi-Fi; the setup guide is the order that works.
- Turn Data Roaming OFF on Fi
If Fi roaming stays on, a weak travel-eSIM signal can still pull $10/GB. This is the expensive toggle.
- Turn Data Roaming ON for the travel eSIM
Travel eSIMs route as roaming on a local carrier. The line needs roaming enabled even though you prepaid.
- Turn Allow Cellular Data Switching OFF
On iPhone this is the silent-roaming trap. With it on, iOS falls back to Fi when the travel line dips. Off means you stay on the travel eSIM. Walkthrough: eSIM on iPhone.
Common Google Fi vs travel eSIM questions
The category error first, then the plan math and the dual-SIM toggles.
How we built this page
What is in this guide, what is not, and how we get paid.
Travel-eSIM prices are the live plans we track: Nomad 50 GB / 30 days in Canada at $49; GoMoWorld 55 GB / 30 days in India and Japan at $29.99; Nomad 50 GB / 10 days in Thailand at $9; GoMoWorld 4 GB / 7 days in the UK and France at $3.99 as entry samples; Nomad 1 GB / 7 days in Mexico and Australia at $4 as entry samples. Fi is always $10/GB. Multiples (10×, 18×, 55×) are $10 divided by those best-rate dollars per gigabyte. We did not invent a 10 GB Europe travel SKU for scenario A.
Fi plan prices, the Flexible cap, hotspot allotments, iPhone international-hotspot support and APN notes, the 90-day / primary-US use expectation, and referral code DR48NH match our Google Fi review. Google Fi does not have a Trustpilot profile we can score — it is a US carrier, not a travel-eSIM storefront, and we do not display a Trustpilot chip for it.
BetterSIM uses affiliate links, including travel-eSIM checkouts and the Fi path on our provider page. Commissions do not change the $10/GB rate, the travel prices in the table, or the traveler-type calls. The compare templates on this site still introduce some pairs as “two travel eSIMs” or “data-only” even when one side is Fi; this guide does not repeat that label, and we are not rewriting those compare pages here.