USA eSIM: prices, compatibility, and which one to choose for a road trip
How to check eSIM compatibility, compare travel eSIMs, local SIM cards, and French plans, and stay connected in national parks.
By David Sanchez · · 8 min read
Using your French cell phone plan without a dedicated option can cost several dollars per megabyte while roaming. A USA eSIM has become the standard solution, but it is not the only option. There are three choices, and the right one depends on the length of your stay, your budget, and, above all, your itinerary. For a national parks road trip, the eSIM's partner network matters just as much as the price. Our guide to using your phone in the United States covers the basics of phone use and payments; this article goes further, focusing on comparing plans and coverage in remote areas.
Check eSIM compatibility before buying
Two conditions are required to use an eSIM: your device must contain the chip, and your French carrier must have unlocked it. Both requirements must be met. A phone may support the technology while the carrier restriction is still active, and the reverse is also possible.
To check hardware compatibility, dial *#06# on the call screen. If an EID number appears, the eSIM chip is present. On iOS, check the unlock status under Settings > General > About > Carrier Lock: the message “No SIM restrictions” confirms that the device can accept a foreign profile.
In 2026, eSIM-compatible models include most smartphones sold since 2018: iPhone XS and later in all variants, Samsung Galaxy S20 and later as well as the Z Fold and Z Flip series, Google Pixel 3 and later, Xiaomi 13 and 14, Sony Xperia IV, V, and VI series, OnePlus 10, 11, and 12, and Oppo Find X models. One exception to keep in mind: some Samsung and Xiaomi models sold in China do not include an eSIM chip, even though they have the same model name as the international version. If you bought your device in China, check the exact model number before ordering.
Travel eSIM, local SIM card, or French plan: the three options
The three options are not aimed at the same travelers or the same trip lengths. The table below compares them using the key criteria.
| Travel eSIM | Prepaid local SIM card (AT&T, T-Mobile) | French plan with USA coverage | |
|---|---|---|---|
| Typical price | From USD 3.99 for 7 days (September 2026, subject to change) | About USD 30 to 50 for 30 days | Depends on the carrier (Orange, SFR, Bouygues, Free) |
| U.S. calls/texts | Usually data-only | Included | Included |
| Hotspot | Depends on the plan | Included | Often included |
| Activation time | Instant QR code, before departure | On site, in a store (airport, Target, Best Buy) | Activate before departure |
| Best for | Short stays, solo travelers | Long stays, heavy data users | Convenience, if the option is already included in your contract |
A travel eSIM offers convenience and flexibility: everything is set up before boarding, with no need to visit an airport counter. A prepaid local SIM card often offers good value for data, calls, and duration on a trip lasting several weeks, but you have to buy it after arriving. A French plan is the effortless option, as long as USA coverage is already included in your contract; outside major cities and the main tourist routes, coverage is often limited.
How a travel eSIM works
An eSIM is a digital profile downloaded to your phone's chip using a QR code sent by email: there is no physical card to insert and no delivery to wait for.
The vast majority of eSIMs offered for the United States are data-only: your French number stays active on the physical SIM, while calls go through WhatsApp, FaceTime, or Signal using data from the U.S. eSIM. A plan with a U.S. number is available, but it is mainly useful for contacting local providers that will not call back a foreign number (see the FAQ).
The most widely available brands for the United States are Holafly, Airalo, Saily, Ubigi, TravSIM, and GigSky. Before buying, always check two points: does the plan allow hotspot use, and which partner network does it use in the United States? Ubigi, for example, caps full-speed data at 60 GB before reducing speeds to 2 Mbps (September 2026, subject to change). Not every plan has this kind of restriction, but not every plan mentions it on the first page either.
For activation, TravSIM recommends submitting the request three to five days before departure: the installation QR code is sent on the selected activation date. The eSIM activates automatically the first time it connects to a U.S. network. GigSky advertises a 100 MB trial offer with no credit card required; check it before departure, as the offer may have changed.
Coverage in national parks: AT&T and Verizon ahead of T-Mobile
This is the factor eSIM shoppers overlook most often, and the one that makes the biggest difference on a national parks itinerary. AT&T and Verizon generally cover remote areas of the American West better than T-Mobile, including areas around the Grand Canyon, Yellowstone, and Zion. This trend is documented but not absolute: no carrier guarantees continuous service inside national parks, regardless of the plan.
The practical takeaway: before buying an eSIM for a road trip in the American West, find out which U.S. carrier serves as the offer's partner network. GoMoWorld lists two available networks per destination, providing useful redundancy near borders. As for territories: Hawaii is included in Ubigi USA coverage, while Alaska is excluded. Puerto Rico is covered by TravSIM. The coverage map for the plan you choose remains the only reliable indicator before purchase.
For areas without service, offline maps are the only dependable solution. Download your route before entering a park: Google Maps offline for roads, and Maps.me or Gaia GPS for trails. Once the download is complete, no connection is required.
Our take: for a national parks road trip, coverage matters more than price
Two weeks or less: a data-only eSIM (Holafly, Airalo, Saily) is the most convenient option. Make sure to choose a plan that uses the AT&T or Verizon network if your route includes Yellowstone, the Grand Canyon, or Zion. Prices start at USD 3.99 for seven days (as of September 2026, with rates varying by promotion).
Three weeks or more, or a tight budget: a prepaid local AT&T or T-Mobile SIM card bought at the airport or a Target store generally offers better value for data, calls, and duration, at about USD 30 to 50 for 30 days. It is also worth considering if you are combining connectivity with a car rental in the United States or an RV road trip over a longer period.
Families or groups with several devices: check that the plan allows hotspot use before buying. Not all plans do, and the information is not always prominent on sales pages.
What we do not recommend: choosing an eSIM based only on price without checking the partner network, and leaving without offline maps. Ubigi's 60 GB full-speed cap (as of September 2026) is still comfortable for a solo traveler, but it is worth watching for a group sharing a connection. In national park dead zones, Gaia GPS downloaded the day before is worth more than any data plan.
Frequently asked questions
Will a phone bought in France support a USA eSIM?
eSIM compatibility depends on the model, not the country where you bought the phone. To check, dial *#06# on the call screen: if an EID number appears, the chip is present. You must also make sure the carrier has unlocked the device (on iOS: Settings > General > About > Carrier Lock).
Will a USA eSIM work in Hawaii and Puerto Rico?
A USA eSIM works in Hawaii if the plan includes the territory: Ubigi USA covers it, but Alaska is excluded. Puerto Rico is covered by TravSIM. Check the coverage map for the plan you choose before buying, since these territories are not always included.
Is a data-only eSIM or a plan with a U.S. number better?
A data-only eSIM is enough if you use WhatsApp, FaceTime, or Signal for calls and texts. A U.S. number is useful for contacting local providers (hotels, rental companies, rangers) that will not call back a foreign number, or for receiving verification codes linked to U.S. services.
Can I keep my French number active at the same time as the USA eSIM?
Yes, on a phone with a physical SIM and eSIM. The French physical SIM remains active for incoming calls and texts from France, while the U.S. eSIM handles local data. Both profiles coexist without daily adjustments.