An eSIM is easier for most travellers to the US: you buy and install it at home, then switch it on and select it for Cellular Data when you land, with no kiosk queue and no SIM swap. A prepaid SIM card is easier only when your phone cannot take an eSIM, or when you want a US number for a long stay.
The enemy is the arrivals-hall scavenger hunt: the queue, the store run, the tiny tray pin you’ve already lost.
An eSIM is easier for most US travellers, a prepaid SIM for a few
An eSIM is easier when your phone is unlocked and eSIM-capable: you buy it at home, install it once and switch it on when you land. A physical prepaid SIM fits the phone with no eSIM support, or the long stay where you want a US number.
Check the phone first. According to Globalia, eSIM-ready phones include every iPhone from XR (2018) onward, every recent Pixel and Galaxy flagship, and most modern OnePlus and Motorola devices. BaobabSIM says to install before you fly, on Wi-Fi, using the QR code on your order page.
Here’s our case. Maya is installed once and stays on your phone permanently. For each trip you buy a new plan, with no reinstalling. Maya eSIMs work in the United States and 165+ additional destinations, in 3, 7, 14 and 30-day plans from USD 9.99.
Where and when should you buy a US SIM card or eSIM?
Buy before you fly. An eSIM bought and installed at home is ready to switch on when you land, while a physical SIM sends you to a store or an airport kiosk.
Cheap Sim Card (2026) puts the typical US airport price at around $20. Then there’s the line. Cheap Sim Card (2026) lists 15 to 20 minutes at peak at JFK’s T-Mobile kiosk in Terminal 4. A kiosk queue shouldn’t rattle you either, because you can skip it.
Downloading Maya and scanning the QR code installs the eSIM in 2 minutes, though it may take a few minutes on some devices or networks. You install it once before travel. On landing, you switch on the Maya eSIM and select it for Cellular Data. Done.
Apple Support publishes these steps for an iPhone:
- When the notification, Carrier Cellular Plan Ready to Be Installed, appears on the screen, tap it.
- In the Settings app, tap Carrier Cellular Plan Ready to Be Installed.
- Tap Continue at the bottom of the screen.
- Make a call on your iPhone to check its cellular connectivity. If you can’t make a call, contact your carrier.
- If the plan you activated replaces the plan on your physical SIM, remove your physical SIM, and restart your iPhone.
The Google Pixel Phone Guidebook publishes these for a Pixel:
- Open the Settings app.
- Tap Network & internet.
- Tap SIMs.
- Tap Download a new eSIM.
What does a US prepaid SIM cost compared with a travel eSIM?
A travel eSIM costs according to the days of your trip, while a US prepaid SIM is priced by the month. Maya’s four plans run USD 9.99 for 3 days, USD 19.99 for 7, USD 27.99 for 14 and USD 49.99 for 30, all as published by Mobile Maya Inc (2026).
The prepaid side starts cheap. T-Mobile Prepaid lists its 3-in-1 SIM Starter Kit at $10 plus taxes and fees, with a $10 device activation charge if you buy in-store. Roafly (2026) reports the $15 Connect plan includes 5GB of smartphone data over a 30-day prepaid service period. That’s a month of service for a trip that may be a week.
Your own carrier is the other option. By O2’s page, O2 Travel is £7 a day, £49 for seven days of use. By Bell’s page, Roam Better is $13 a day in the U.S., $91 CAD for seven days. Maya’s 7-day plan is USD 19.99, and the price is the same in every country.
Maya offers four core plan types, each giving unlimited global data across 165+ countries as a prepaid, time-based data pass. Every plan is a one-time purchase, and Maya is not a subscription. It runs alongside your existing SIM, so your home number and carrier plan stay as they are.
You know the total before you board. In a September 2026 Trustpilot review, Jane B. wrote: “Excellent service. No need to worry about huge phone bills when you get back from holiday. I got caught out one year when I went away for longer than 2 weeks and thought I’d just keep buying a holiday roaming weekly package but ran out of data and couldn’t add any more. Now I used Maya eSIMs and know exactly what I’m spending and get unlimited data.”
What does your phone need for a US eSIM or prepaid SIM?
Your phone must be unlocked by your home carrier and support US bands and VoLTE. An eSIM also needs an eSIM-capable phone, and if yours has none, a physical prepaid SIM is the right choice.
PhoneGuiding (2026) puts it this way: “The phone must be unlocked, support the carrier’s network bands, and support VoLTE calling on that network. If any of these is missing, it will not work properly.” Airalo (2025) adds three conditions for an eSIM: the device supports eSIM functionality, it is unlocked, and it is not jailbroken (iOS) or rooted (Android).
Two checks take a minute each. On an iPhone, open Settings, tap General, tap About. Apple Support (2026) says “No SIM Restrictions” appears next to Carrier Lock if the phone is unlocked. On any phone, dial *#06#. Orange Travel says that if an EID number appears, your phone supports eSIM, and if you only see an IMEI, it doesn’t.
How does trip length change what you buy for the US?
A 3-day, 7-day, 14-day or 30-day trip maps to the Maya plan of the same length, at one flat price. A prepaid SIM bills by the month, so a ten-day trip pays for a full cycle.
T-Mobile Support says its Pay As You Go is based on a 30-day cycle regardless of how many days are in each month. US Mobile says you pay for a 30 day plan when your plan starts. Pick your days with Maya and go. A 10-day trip takes the 14-day plan.
Every Maya plan includes a daily high-speed allowance, at up to 4G LTE or 5G where available on local networks. It resets every 24 hours, and unused allowance does not carry over to the next day. After the allowance is used, data continues at standard speed for the rest of the day. Maya’s Master Service Agreement says that speed is not guaranteed and varies with local network conditions and signal strength.
When the days run out, the plan ends, unless Auto Top-Up is on. Auto Top-Up is opt-in only and off by default. The eSIM stays on your phone and the next trip needs a new plan and nothing else. You’re back to the trip.
Common Travel eSIM Problems in the US, and How to Avoid Them
Travellers run into the same few problems: an eSIM that installs late, a plan that does not cover the country, and a data cap behind the word “unlimited”. Check phone compatibility, coverage for the United States, the plan’s days and the allowance terms before you buy. This is why Maya states the daily allowance in its own terms.
A one-star Trustpilot review of Nomad from October 8, 2026 reads: “I couldn’t get the eSIM to work and when I tried to get help all I could get was talking to a robot who did not help.” Install at home on Wi-Fi, where you have time to sort a snag, and you meet that problem before the flight.
Service in a specific country is not guaranteed and varies for reasons outside Maya’s control. The terms are published by Mobile Maya Inc, and the allowance is written into them.
Which travel eSIM fits a US trip, going by what each company publishes
The table lists what Maya, Airalo, Holafly, Saily and Nomad publish about how they sell plans and what unlimited means on each. Every cell is the company’s own published statement.
| Travel eSIM | How plans are sold | Unlimited plan allowance, as published |
|---|---|---|
| Maya Mobile | One Global eSIM for 165+ countries, unlimited data at a flat price by trip length: USD 9.99 for 3 days, USD 19.99 for 7 days, USD 27.99 for 14 days, USD 49.99 for 30 days | A daily high-speed data allowance (the Daily Quota) at up to 4G LTE or 5G where local networks offer it, reset every 24 hours; unlimited data at standard speed once the Daily Quota is used |
| Airalo | Per country, per region, or one global plan; priced in USD | Our unlimited data packages don’t have a fixed total data cap. However, to keep the network running fairly for everyone, when you use more than 3GB in a day, we’ll slow down (or “throttle”) your internet speed to 1 Mbps for the rest of that day. |
| Holafly | Per country, per region (Europe, Latin America, Cruise plans), and unlimited monthly/annual global plans | Unlimited data means there is no fixed limit on the amount of data you can use. However, some network operators may temporarily reduce your speed after a certain amount of high-speed data usage, as explained above. |
| Saily | Per country and per region, plus one global plan; by the gigabyte, unlimited, or both | The Unlimited plan gives you 5 GB per day at full 4G/5G speed, then keeps you online at 1 Mbps for the rest of the day — fast enough for navigation, messaging, and standard browsing. |
| Nomad | Per country, per region and global plans; by the gigabyte | How many GB of high-speed data you wish per day. You can continue to use your data at a throttled speed of 512kbps after you’ve used up your daily allocation. |
Each rival’s cells are its own published words, or a short summary of what it states; the Maya Mobile cells are from maya.net.
Why Maya Mobile is the easy way to do a US trip
Maya is one eSIM on your phone, one flat price for the days you pick, and unlimited data with a daily high-speed allowance across 165+ countries. Plans start at USD 9.99. When you need more days, you buy another plan from the app.
Maya Mobile is a travel eSIM giving unlimited data in 165+ countries and 20+ cruise lines through a single eSIM permanently installed on the phone. For this trip, it means the US plan you bought at home and nothing to hunt for on arrival.
On iOS, choose the QR code method in the Maya Mobile app, scan the QR code with the device to install on, tap Add eSIM or Add Cellular Plan when notified, and follow the prompts. It’s marked Recommended. QR code installations are one-time only, so use that method with a brand-new eSIM. Prefer typing? Log in to your Maya Mobile account, click My eSIMs, click Install eSIM under the plan, click Manual Activation Code on the pop-up, then copy the code and enter it on your device when prompted.
Questions travellers ask about US SIMs
Do you need ID to buy a prepaid SIM card in the US?
No. T-Mobile Prepaid’s US Pass eSIM page says: “Get connected quickly with no contracts or ID required. You must complete your purchase while in the United States.” (T-Mobile Prepaid, 2026) That second sentence is the catch. A travel eSIM is one you buy at home.
How do you keep your home number while using a travel eSIM in the US?
Keep your home SIM in for calls and texts, and run the eSIM for data. Apple Support says: “Both phone numbers can make and receive voice and FaceTime calls.” Google’s Pixel help says: “Only one SIM can be the default for data.” So on either phone, set the travel eSIM as your data line.
Do you need to delete a travel eSIM after your US trip?
No. The eSIM stays on the device after the plan expires, ready for the next trip. Maya recommends keeping it installed, and the next trip needs a new plan and nothing else.
What happens when your plan runs out in the middle of a US trip?
Buy another plan in the Maya app. Maya Mobile’s own page says: “Plan showing as expired? Buy a new plan in the Maya app in under a minute.” Your eSIM stays installed in an inactive state, so enable it in your device settings after the purchase. Auto Top-Up is opt-in and off by default, and with it on the plan renews when it expires.
What is the difference between a travel eSIM and a US carrier eSIM?
A travel eSIM installs from home and is usually data-only, while a local prepaid plan typically includes a local phone number. eSIMFlux (2026) finds a travel eSIM usually wins on time saved. One Maya eSIM covers 165+ countries, so it carries on to your next destination too.
How does one eSIM cover a US, Canada and Mexico trip?
One Maya Global eSIM works in all three. The Maya Global Unlimited Data plan works in Mexico plus 165+ other countries. According to Maya Mobile’s support page (2025), Canada and the USA are both listed among the Americas countries covered. The same plan and price apply across the border, with Bell, TELUS and SaskTel listed as 5G network partners in Canada.
Maya gives you one eSIM you install once, with unlimited data in 165+ countries, so a US trip starts when you land and not at a kiosk.
