The United States is one of the most popular overseas destinations for travellers. Whether you're visiting the skyscrapers of New York, the California coast or the national parks — reliable mobile internet is key for navigation, booking accommodation and staying in touch.
US mobile networks
There are three major mobile operators in the USA:
- T-Mobile — the largest 5G network, with excellent urban coverage
- AT&T — strong rural coverage, reliable 4G/LTE and 5G
- Verizon — premium quality, but the narrowest coverage area
eSIM plans typically use the T-Mobile or AT&T network, which together cover most of the country.
Coverage: where is there internet and where isn't there?
| Area | Coverage | Note |
|---|---|---|
| Big cities (NYC, LA, SF, Miami) | Excellent (5G/4G) | Among the world's fastest networks |
| Smaller towns | Good (4G/LTE) | Reliable connection |
| Interstate highways | Variable (4G/3G) | Weaker in stretches |
| National parks | Weak/none | Signal only at entrances |
| Remote rural areas | None or minimal | Arizona desert, Montana mountains |
National parks: be prepared!
In US national parks (Grand Canyon, Yellowstone, Yosemite, Zion, Glacier) mobile coverage is almost zero. This isn't the eSIM's fault — no operator covers these areas well.
Tips for national parks:
- Download offline maps (Google Maps or Maps.me)
- Ask for a paper park map at the visitor centre too
- Accommodation (lodges, campgrounds) generally has Wi-Fi
- There's sometimes a signal at entrances and larger car parks
eSIM vs. local SIM vs. roaming
| Aspect | eSIM | Local SIM (T-Mobile/AT&T) | Roaming |
|---|---|---|---|
| Purchase | From home, in your currency | In a shop, in English | Automatic |
| Price (1 week, 5–10 GB) | Attractive | Similar | 5–10x more expensive |
| Activation | Instant | Have to go to a shop | Automatic |
| Dual SIM | Home number active | SIM swap required | On home SIM |
| Phone number | None (data only) | Comes with a US number | Home number |
Tips for travellers to the USA
- Hotspot for the family: If you travel as a group, with a larger data plan you can use the eSIM phone as a Wi-Fi hotspot — the others don't need a separate plan
- Navigation: In the USA driving is essential — Google Maps or Waze is a must, but download the offline maps too
- Uber/Lyft: In the big cities Uber and Lyft are the primary way to get around — this needs internet
- Long distances: New York to Los Angeles is a 5–6 hour flight — planes often have paid Wi-Fi, but the eSIM doesn't work in the air
Crossing into Canada
If you pop over from the USA into Canada (e.g. Niagara Falls), most eSIM plans don't include Canada. It's worth buying a separate Canadian plan, or choosing a regional plan that covers both countries — you'll find these in the eSIM Surfer app.
Summary
When travelling to the USA, an eSIM is the most practical and economical solution: you buy it prepaid in your own currency, your home number stays active, and you have internet the moment you land. For the national parks, though, prepare with offline maps — no mobile network there provides reliable coverage.