Every time someone writes to me before flying to New York, San Francisco, or a road trip through Utah, the question is the same: how to get internet in the United States without getting a shock on the bill or relying on hotel Wi-Fi. It's a good question, because the US is outside the European roaming zone: your Spanish plan doesn't travel with you here, and megabytes are charged at a premium. I'll compare all the real ways to connect there, with approximate prices for 2026, what the real coverage is like in cities, parks, and empty roads, and how much data you need to avoid overpaying.
The 5 ways to get internet in the US.
Quick answer: In the United States, you can connect in five ways: roaming with your Spanish operator (the most expensive), public Wi-Fi in hotels and cafes (free but insufficient), rental pocket Wi-Fi, a local prepaid SIM purchased there, or an eSIM contracted before flying. For tourists, eSIM wins in terms of price, convenience, and coverage.
All five work. The difference lies in how much you pay, how much time you waste, and how much freedom you have when leaving the hotel. My conclusion, after trying almost all of them: the most expensive mistake is to not decide anything and leave your phone on automatic when you land. Comparative summary for a 10-day trip:
| Option | Approximate Cost (10 days) | Speed and Coverage | What to do |
|---|---|---|---|
| Roaming with Spanish operator | €60-90 with a bonus; hundreds of euros without a bonus | 4G/5G of the local network | Activate the bonus before flying |
| Hotel and café Wi-Fi | $0-25/day (resort fee) | Only within the premises | Accept the captive portal |
| Rental Pocket Wi-Fi | €70-110 + deposit | Good, one device for the group | Pick up, charge, and return |
| Local prepaid SIM (T-Mobile, AT&T, Verizon) | $40-55 for 30 days | Excellent (native network) | Physical store in the US with passport |
| Data eSIM for the US | €5-30 depending on GB | 4G/5G over T-Mobile/AT&T | Buy online and scan a QR |
You have the breakdown of each comparison in my articles: eSIM vs. roaming, vs. pocket Wi-Fi, and vs. local SIM. Now let's go through them one by one.
Roaming with your Spanish operator: convenient and extremely expensive
Almost everyone defaults to the same thing: landing, turning off airplane mode, and letting their phone connect to the first network. It works, yes. And it is, by far, the most expensive way to get data in the United States.
The reason is regulatory: the "roaming like home" you enjoy in France or Portugal only applies within the European Union. The U.S. is in a separate tariff zone, with megabyte prices that are dizzying. In 2026, without a contracted bonus, the figures remain brutal: Movistar can reach about €12/MB on prepaid and Vodafone is around €4.95/MB. Translated: one gigabyte without a bonus can exceed €4,000. It's not a typo, it's arithmetic.
That's why operators sell travel bonuses, the lesser evil: Movistar, about €6/day for 500 MB; Orange, about €9/day for 2 GB. In 10 days, we're talking about €60-90 for fairly limited data, and if you exceed the bonus, the excess is charged at another full bonus rate.
| Scenario (10 days, 8 GB) | Estimated Cost | Risk of bill shock |
|---|---|---|
| Without bonus, per MB rate | Thousands of euros | Very high |
| Operator's daily bonus | €60-90 | Medium (excesses, calls, MMS) |
| Data eSIM purchased before flying | €10-25 | None: fixed payment in advance |
The real advantage of your operator is that you don't have to do anything, and that convenience costs between three and six times more. The figures country by country, in how much international roaming costs.
Hotel, café, and airport Wi-Fi: plan B
The United States is probably the country with the most free Wi-Fi in the world. Starbucks, McDonald's, public libraries, shopping malls, almost all airports, and virtually any hotel: you'll find an open network every two blocks. This leads many people to believe they can travel without mobile data. They can, but they'll have a tough time.
The problem isn't availability, it's where it's available. Wi-Fi doesn't serve you for what you really need when traveling:
- Ordering an Uber from a Brooklyn street corner at one in the morning.
- Google Maps in action, walking or driving, with real-time route recalculation.
- Showing your ticket or pass for the subway, museum, or flight when the QR isn't cached.
- Translating a menu or calling via WhatsApp from a viewpoint.
Add two rather unpleasant nuances. First, many urban hotels and resorts charge a $20-50 per day resort fee that "includes" the Wi-Fi you thought was free, and often the basic Wi-Fi is slow and the fast one is paid separately. Second, open networks with a captive portal are ideal for someone to snoop on your traffic: do not enter bank details on a public network without a VPN.
My recommendation: use Wi-Fi to download shows and upload photos, and have mobile data for everything else. As a primary network for a trip, Wi-Fi is a plan B, not a plan.
Pocket Wi-Fi: the rental router
Pocket Wi-Fi (or MiFi) is a pocket-sized router with a SIM inside that creates its own Wi-Fi network to which several mobile phones can connect simultaneously. It was a great idea... in 2014, when half of mobile phones didn't accept foreign SIMs and international data was a luxury. In 2026, it still has a niche, but it's getting narrower.
Pros:
- Shares connection with 5-10 devices: useful for large families or a group with laptops and tablets.
- Works with older phones that don't support digital profiles.
- Usually provides a generous volume of data, sometimes "unlimited" with fine print.
Cons, and here's the problem:
- €7-11 per day, plus deposit and, sometimes, insurance: two weeks can add up to €100-150.
- You have to pick it up and return it. If you lose it or return it late, you pay for the entire device.
- It's one more device to charge: the battery lasts between 6 and 10 real hours.
- And the ultimate flaw: if the group splits up, only one person keeps internet. In Manhattan or a theme park, that's a serious problem.
If there are four of you traveling and you all need independent connection, four digital profiles are better priced and more convenient than a shared router. I elaborate on this in eSIM vs pocket Wi-Fi.
Prepaid local US SIM: must be purchased there
Buying an American prepaid card is a legitimate option and provides excellent coverage, because you are on the operator's native network. The big three—T-Mobile, AT&T, and Verizon—have plans for visitors, in addition to low-cost brands like Mint, Cricket, Metro, or Visible that operate on those same networks.
As of 2026, T-Mobile markets its U.S. Pass for visitors for around $45 for 15 GB and $50 for 50 GB of high-speed data for 30 days, including calls and SMS. Reasonable price... with three important asterisks.
First, you buy it there, not here. These plans are designed to be purchased in the United States, and physical SIMs are sold in operator stores, not just any kiosk: you'll have to dedicate some time on your first day to finding the store and waiting in line.
Second, they ask for your passport and sometimes a local address, and some plans require identity verification. It's a formality, not a drama, but it's time out of your vacation.
Third, and this is always forgotten: by inserting the American SIM, you lose your Spanish number if your phone isn't dual SIM. Goodbye to bank SMS messages just when you need them most.
Honest summary: it's the best possible coverage at the cost of your first morning of travel. If it's worth it to you, go for it; I compare it in depth in eSIM vs. local SIM.
eSIM: the option I recommend
An eSIM is a digital SIM card: instead of a piece of plastic, you install a profile on your mobile by scanning a QR code. That profile connects you to the local networks of your destination—in the US, usually over T-Mobile and/or AT&T infrastructure—just as a physical card would. If you're not clear on the concept, I explain it slowly here: what an eSIM is.
Why I recommend it for the United States:
- You get everything ready from home. Buy, install, and land with data working before you even pick up your luggage.
- Fixed price. You pay in advance for the GB you want: no overages or surprises on your next month's bill.
- You keep your Spanish number. Data goes through the digital profile, and your usual line remains active to receive SMS (receiving them is not charged).
- Nothing to pick up or return. Zero counters, zero deposits, zero extra devices.
- Each one for themselves. Four travelers, four profiles: if you split up, everyone stays connected.
My rule, after quite a few trips: if the mobile is compatible and the destination has a good network, the digital profile almost always wins. The exception is long business stays, where a local number does add value.
The fine print? You need a compatible and unlocked phone (all iPhones from XS and almost all mid-range to high-end Android phones since 2020) and Wi-Fi to install it. And most of these plans are data-only: for talking, you'll use WhatsApp or FaceTime. With that covered, there's no reason to pay international rates for a tourist trip.
4G and 5G Coverage: New York, LA, parks, and rural areas
The United States has one of the best mobile networks in the world… and also some of the biggest coverage gaps you'll ever see. Both things are true at the same time.
In terms of population, coverage is spectacular: over 90% of Americans live in areas with 5G, and T-Mobile reaches close to 98%. In terms of area, the picture changes: according to the FCC, at a threshold of 7/1 Mbps, T-Mobile covers 38% of the territory, AT&T 32%, and Verizon 18%. Where people live, there's plenty of network; where no one lives, there's nothing. What this means for your trip:
- New York, Los Angeles, Chicago, Miami, San Francisco: Solid 5G, with peaks of 200-600 Mbps. The New York subway has coverage in almost all stations (not always in the tunnels).
- Interstate highways and towns: Decent 4G almost always, intermittent 5G.
- National parks: Irregular. In Yellowstone, there are antennas in developed areas (Old Faithful, Mammoth, Grant Village, Canyon), but huge areas of the park have no signal. In the Grand Canyon, the South Rim is good; the North Rim is no man's land. In Death Valley, there's hardly any network outside Furnace Creek and Stovepipe Wells.
- Deserts of Utah, Nevada, and Arizona and stretches of Route 66: Miles without a single bar.
If your trip includes national parks, download offline maps before leaving your hotel. No data plan—from any operator—will give you a signal where there's no antenna.
Coverage depends on the antenna, not on who you buy data from: on the T-Mobile or AT&T network, you'll get the same as an American on that same network.
How much data you really need
This is where people either overspend or underspend. An average tourist in the United States uses between 500 MB and 1 GB per day with normal use (maps, messaging, social media, some video) and hotel Wi-Fi. If you're navigating all day and uploading videos to Instagram, plan for 1.5-2 GB daily.
| Activity | Approximate Consumption | Practical Equivalence |
|---|---|---|
| WhatsApp (text and voice) | ~10-20 MB/day | Almost free in terms of data |
| Google Maps navigating | ~5-10 MB/hour | An entire day of routes: ~100 MB |
| Instagram / TikTok | ~150-250 MB / 15 min | The biggest data hog in your plan |
| Email and web browsing | ~50-100 MB/day | Low and stable consumption |
| Netflix or YouTube in HD | ~1-3 GB/hour | Save it for hotel Wi-Fi |
| Uploading photos to the cloud | ~2-5 MB per photo | Deactivate automatic uploads with data |
Translated to plans:
- 4-5 day trip to New York: 3-5 GB is more than enough.
- 10-day trip (city + parks): 8-10 GB with some margin.
- 2-3 week road trip: 15-20 GB, more if you share a connection with a laptop.
- Working while traveling: 2-3 GB per day; look for a large or unlimited plan.
Always buy one tier above what you think you'll use: the difference between 5 and 10 GB is usually a few euros, and running out of data in Manhattan at eleven at night costs considerably more.
How to connect on arrival day, step-by-step
This is the script I follow. The important stuff happens before boarding the plane, not at New York airport with luggage in tow.
- Check that your phone is compatible and unlocked. Dial *#06#: if an EID number appears, it supports digital profiles. If it's locked by an operator, request unlocking before traveling.
- Contract the plan from home, with Wi-Fi. Choose the GBs according to the table above, and you'll receive a QR code via email.
- Install the profile without activating it yet. Settings → Mobile data → Add plan. You can install it days in advance; the counter usually starts when it first connects to a US network.
- Label the lines as "Spain" and "USA": this will save you confusion.
- Before landing, configure your phone as follows: mobile data on the US line; Spanish line only for calls and SMS, with data roaming DEACTIVATED. This step is what prevents your operator from charging you.
- Upon arrival, turn off airplane mode and wait 1-2 minutes for it to connect to the local network. If it doesn't, restart.
- Download offline maps of the parks and rural areas you plan to visit.
The "data roaming" switch determines whether you come back with a surprise bill or not. Double-check it. In the complete guide to connectivity in the United States, you'll find the process with screenshots, for iPhone and Android.
Frequently asked questions
Does my Spanish plan work in the United States?
Yes, technically it works, but it's not included in your plan. The U.S. is outside the European Union roaming zone, so international rates apply: from about €5/MB to over €12/MB without a bundle. If you don't purchase anything, a single gigabyte can cost thousands of euros.
Can I buy an American SIM in Spain before traveling?
Physical T-Mobile, AT&T, or Verizon cards are intended to be sold in stores in the United States, and their visitor plans are purchased there. There are resellers, but the easy way is to buy a digital plan before you fly and arrive already connected, without queues or paperwork.
Is there coverage in national parks?
Only partially. In Yellowstone there are antennas in developed areas like Old Faithful or Mammoth; in the Grand Canyon, the South Rim works and the North Rim barely does; in Death Valley there's hardly any signal outside Furnace Creek. Always download offline maps before entering.
How many GB do I need for 10 days in the U.S.?
With normal use —maps, messaging, social media, and hotel Wi-Fi— 8-10 GB is more than enough for 10 days. If you work from your phone, share your connection with a laptop, or consume a lot of video outside the hotel, estimate 15-20 GB.
Do I keep my Spanish phone number?
Yes, if your phone supports two lines. Data travels via the U.S. profile and your Spanish line remains active to receive calls and SMS —receiving SMS is free, and that's how you get bank codes—. However: deactivate data roaming on the Spanish line.
Which carrier has the best coverage in the United States?
It depends on where you go. T-Mobile leads in population and 5G speed in cities; Verizon and AT&T often perform better in some rural areas and parks. Data plans for travelers usually rely on T-Mobile and AT&T networks, which more than cover a tourist itinerary.
Is it worth renting a pocket Wi-Fi?
Only if you are traveling in a large group with laptops and an older mobile phone without digital compatibility. For everyone else, it's expensive (€7-11/day plus deposit), you have to pick it up and return it, it runs out of battery, and if the group separates, only one person has internet.
Is it safe to use free Wi-Fi in cafes and airports?
To read news or check the map, yes. To log into your bank or pay, not without a VPN: open networks are easy to spy on. Use them to download heavy content and save sensitive transactions for your own mobile data connection.
Conclusion
In summary: public Wi-Fi is a complement, not a solution; pocket Wi-Fi is another device to carry and return; local prepaid offers excellent coverage but costs you the first morning of your vacation and your Spanish number; and leaving your mobile in the hands of your carrier turns 10 days of travel into €60-90 —or much more— for connection.
For most travelers, the recommendation is the same: contract your digital data plan before you fly, land with internet working, and spend your first day in Central Park, not queuing at a phone store. Ten minutes of preparation at home saves you hours of hassle and dozens of euros there.
Preparing for your trip? Take a look at our data plan for the United States, choose the GBs according to the table above, and install it today with your home Wi-Fi. When you land, your phone will already be connected.
