Every time someone writes to me before flying to New York, San Francisco, or taking a road trip through Utah, the question is always the same: how to get internet in the United States without getting a shock on their bill or depending 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 true 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 a tourist, eSIM wins in price, convenience, and coverage.
All five work. The difference lies in how much you pay, how much time you lose, and how much freedom you have when you leave the hotel. My conclusion, after trying almost all of them: the most expensive mistake is not deciding anything and leaving 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 bundle; hundreds of euros without bundle | 4G/5G on local network | Activate bundle before flying |
| Hotel and cafe Wi-Fi | $0-25/day (resort fee) | Only within the premises | Accept 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 US with passport |
| Data eSIM for US | €5-30 depending on GB | 4G/5G on T-Mobile/AT&T | Buy online and scan a QR |
You have the breakdown of each comparison in my guides: 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 very expensive
Almost everyone does the same thing by default: land, turn off airplane mode, and let 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 at home" you enjoy in France or Portugal only applies within the European Union. The US is in a separate tariff zone, with per-megabyte prices that are dizzying. In 2026, without a contracted bundle, the figures are still brutal: Movistar can reach about €12/MB on prepaid and Vodafone is around €4.95/MB. Translated: one gigabyte without a bundle can exceed €4,000. That's not a typo, it's arithmetic.
That's why operators sell travel bundles, 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 quite limited data, and if you exceed the bundle, the excess is charged to another full bundle.
| Scenario (10 days, 8 GB) | Estimated cost | Risk of bill shock |
|---|---|---|
| No bundle, per-MB rate | Thousands of euros | Very high |
| Daily operator bundle | €60-90 | Medium (excesses, calls, MMS) |
| Data eSIM purchased before flying | €10-25 | None: fixed payment upfront |
The real advantage of your operator is that you don't have to do anything, and that convenience costs three to six times more. Country-by-country figures can be found in how much international roaming costs.
Hotel, cafe, and airport Wi-Fi: the backup plan
The United States probably has more free Wi-Fi than anywhere else in the world. Starbucks, McDonald's, public libraries, shopping centers, almost all airports, and virtually any hotel: you'll find an open network every two blocks. This leads many people to think 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 is useless for what you really need when traveling:
- Calling an Uber from a street corner in Brooklyn at one in the morning.
- Google Maps running, walking or driving, with real-time route recalculation.
- Showing your ticket or pass for the subway, museum, or flight when the QR code isn't cached.
- Translating a menu or making a WhatsApp call from a scenic overlook.
Add two 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 fast Wi-Fi costs extra. Second, open networks with captive portals are ideal places for someone to snoop on your traffic: do not enter banking details on a public network without a VPN.
My recommendation: use Wi-Fi to download series and upload photos, and have mobile data for everything else. As a primary network for a trip, Wi-Fi is a backup plan, not a main plan.
Pocket Wi-Fi: the rental router
Pocket Wi-Fi (or MiFi) is a portable 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 amount 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 cost €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 another device to charge: the battery lasts between 6 and 10 real hours.
- And the definitive flaw: if the group splits up, only one person keeps internet access. In Manhattan or a theme park, that's a serious problem.
If there are four of you traveling and everyone needs an independent connection, four digital profiles are better in terms of price and convenience than a shared router. I elaborate on this in eSIM vs pocket Wi-Fi.
Local prepaid US SIM: buy it there
Buying a prepaid American 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 a 2026 reference, T-Mobile markets its U.S. Pass for visitors at 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 part of 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 takes time out of your vacation.
Third, and this is always forgotten: when you insert the American SIM, you lose your Spanish number if your phone is not 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 the trip. If that works for you, go ahead; 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 plastic card, 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 like 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. You buy, install, and land with data working before you even pick up your luggage.
- Fixed price. You pay upfront 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 for receiving SMS (receiving them is not charged).
- Nothing to pick up or return. Zero counters, zero deposits, zero extra devices.
- Each person gets their own. Four travelers, four profiles: if you split up, everyone stays connected.
My rule, after many trips: if the phone 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-to-high-end Android phones from 2020) and Wi-Fi to install it. And most of these plans are data-only: for calls, you'll use WhatsApp or FaceTime. With that covered, there's no single 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 are true at the same time.
In population, coverage is spectacular: over 90% of Americans live in areas with 5G, and T-Mobile reaches nearly 98%. In 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 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 works well; the North Rim is no man's land. In Death Valley, there's barely any network outside Furnace Creek and Stovepipe Wells.
- Deserts of Utah, Nevada, and Arizona, and sections of Route 66: Miles without a single bar.
If your trip includes national parks, download offline maps before leaving the hotel. No data plan — from any operator — will give you 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 with that same network.
How much data you actually 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 usage (maps, messaging, social media, some video) and hotel Wi-Fi. If you're using navigation all day and uploading videos to Instagram, count on 1.5-2 GB daily.
| Activity | Approximate Consumption | Practical Equivalence |
|---|---|---|
| WhatsApp (text and voice) | ~10-20 MB/day | Almost free in data |
| Google Maps navigation | ~5-10 MB/hour | A full day of routes: ~100 MB |
| Instagram / TikTok | ~150-250 MB / 15 min | The big data guzzler of 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 | Disable automatic upload with data |
Translated to plans:
- 4-5 day getaway to New York: 3-5 GB is plenty.
- 10-day trip (city + parks): 8-10 GB with margin.
- 2-3 week road trip: 15-20 GB, more if sharing 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 just a few euros, and running out of data in Manhattan at eleven at night costs significantly 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 your 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 GB according to the table above, and you'll receive a QR code by 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.
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 data plan work in the United States?
Yes, technically it works, but it's not included in your plan. The US is outside the European Union roaming zone, so international prices apply: from about €5/MB to over €12/MB without a bonus. 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 US stores, and their visitor plans are purchased there. Resellers exist, but the easy way is to purchase a digital plan before flying 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 of Furnace Creek. Always download offline maps before entering.
How many GB do I need for 10 days in the US?
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 through the US profile, and your Spanish line remains active for receiving calls and SMS —receiving SMS is free, so you'll still get bank codes—. However, disable data roaming on your Spanish line.
Which carrier has the best coverage in the United States?
It depends on where you're going. 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're traveling in a large group with laptops and an older mobile phone without digital compatibility. Otherwise, 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 splits up, only one person has internet.
Is it safe to use free Wi-Fi in cafes and airports?
For reading news or checking maps, yes. For banking or payments, not without a VPN: open networks are easy to snoop 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 supplement, 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 phone in the hands of your carrier turns 10 days of travel into €60-90 —or much more— of connection.
For most travelers, the recommendation is the same: purchase your digital data plan before flying, 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 your trip? Check out 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.
