eSIM for the USA: how it works, compatibility and tips

In the United States, a travel eSIM gives you mobile data as soon as you land, without international roaming charges from your home plan: you buy it online, install it before you leave, and your phone connects to a US network. The FCC, the US communications regulator, itself notes that an unlocked phone can use a local SIM or eSIM abroad, which is exactly how a travel eSIM works.

This guide explains how it works, which phones are compatible, the « data only » and US-number options, how to install an eSIM and what to avoid. For the trip itself, see our United States guide, our New York page and the ESTA entry requirements; for the general principle, see our travel eSIM guide.

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How a travel eSIM works

An eSIM is a SIM chip built into the phone. Instead of inserting a card, you download a carrier profile. A travel eSIM is a prepaid plan, usually data only, valid for a set number of days and running on a US carrier’s network. Plans differ in data allowance, validity, the network or networks used, hotspot (tethering) sharing, top-up options and whether they include a local number.

The profile is installed with a QR code or from the provider’s app. This step needs an internet connection: do it at home on Wi-Fi, then activate the line when you arrive in the United States.

Is your phone compatible?

• eSIM support: in your settings, look for « Add eSIM » or « Add cellular plan ». Dialing *#06# shows the IMEI and, on many models, an EID number when eSIM is supported.
• Unlocking: the phone must not be locked to your carrier, otherwise it will refuse another network’s profile.
• Dual line: most recent phones handle two lines (a physical SIM and an eSIM, or two eSIMs). That is what lets you keep your home number for text messages.

What the FCC advises travelers

The FCC publishes a consumer guide on using your phone abroad. Its advice also works the other way round, for a visitor to the United States:

• Unlock your phone so you can use a SIM or eSIM with a local number, which turns the device into a local phone.
• Check compatibility: a phone may work for calls but not for texts or data on a foreign network.
• Turn off automatic downloads, which use data in the background.
• Use Wi-Fi, but be careful with public networks when handling personal data.
• Know the local emergency number: in the United States, it is 911.

The FCC also notes that some phones can handle both a SIM and an eSIM, which widens your options when traveling, and refers readers to the manufacturer’s manual for each model’s capabilities.

Option	Best for	What to check
Data-only eSIM	Most tourist trips	Network used, data allowance, validity, hotspot sharing
eSIM with a US (+1) number	Local bookings, calling businesses, road trips	Calls and texts included, whether you can receive calls, price
Your home carrier’s roaming	Short use, or if you need your home number	US option: check the rate and data allowance
Wi-Fi only	Minimal use	No online GPS navigation in the car

A US number can be handy for calling a restaurant, a car rental desk or accommodation without international call charges. One caveat: some services (banks, apps) send verification codes to the number registered on your account, which is your home number. Keep that line active for text messages.

Coverage: big cities and open country

eSIM listings state which US network or networks they use. In cities, coverage is generally not an issue; in the western national parks, the deserts or on mountain roads, it can be missing for long stretches. Download offline maps before a road trip and tell someone your route if you are heading out hiking.

Installing your eSIM step by step

1. Before you leave, check that your phone supports eSIM and is unlocked.
2. Buy the plan and note whether it starts at installation or at the first connection on arrival.
3. Install the profile on Wi-Fi and label the line « USA » so you can find it easily.
4. On arrival: select this line for cellular data, turn on data roaming on this line only if the provider asks you to, and turn off data on your home line.
5. Leave your home line on so you can receive text messages from your bank, after checking with your carrier that receiving texts abroad is not charged.

Common mistakes to avoid

• Buying an eSIM with a carrier-locked phone.
• Installing the profile on arrival without Wi-Fi: do it before you leave.
• Leaving data switched on for your home line: it is the one that would bill roaming.
• Deleting the profile during your trip: many cannot be reinstalled.
• Relying on the mobile network for navigation in a national park without offline maps.
• Assuming an eSIM automatically gives you a US number: most plans are data only.

Buying an eSIM for the United States

To compare plans, look at the local network or networks used, the data allowance, the validity period, hotspot sharing, top-ups, whether a local number is included and when the validity period starts. For a road trip, choose enough data for navigation and check whether the plan also covers Canada or Mexico if you cross the border. A « data only » plan is enough for most travelers: messaging apps replace calls.

You can buy from a travel eSIM provider, from a local carrier if it offers a plan suited to visitors, or through a comparison site. In every case, read the refund terms: an installed profile is generally no longer refundable.

Frequently asked questions

Our sources

• FCC (Federal Communications Commission), « International Roaming: Mobile Phone Use Abroad » (updated 25 November 2025), consulted on 27 October 2026.
• Our methodology

Updated October 2026. Providers’ offers and terms may change: check them before you buy.