Italy 
South Korea 
This site is not affiliated with any carrier named on this page; we sell eSIMs. How we compare
You may not need an eSIM. AT&T, Verizon, T-Mobile and most other US carriers already cover Mexico and Canada on their unlimited plans. AT&T Elite 2.0 carries 20GB a month of high-speed data abroad, and Verizon Unlimited Ultimate and T-Mobile Experience Beyond carry 15GB (checked on October 29, 2026).
When is your carrier’s plan enough?
When your plan covers the country and the trip fits its data, stay on your carrier. AT&T, Verizon and T-Mobile sell roaming passes, not a travel eSIM of their own (checked on October 29, 2026).
Know the bill traps first. Without a pass, AT&T bills data at $2.05 per MB (AT&T rates). On AT&T and Verizon, a call placed or taken, or a text sent, from your US line can open a $12 day (AT&T Day Pass).
Verizon adds background data, such as apps refreshing or email syncing (Verizon TravelPass FAQs). A T-Mobile International Pass bought with no start date starts at once. We compare public packages; check your own plan.
On a cruise, an eSIM works in port, not at sea: see phone on a cruise.
A week abroad: day pass or eSIM?
Outside Mexico and Canada, seven postpaid days cost $84 on AT&T’s Day Pass or Verizon’s TravelPass, at $12 a day. One T-Mobile 10-day International Pass covers the week for $50 with 15GB (our arithmetic).
| 7 days, one phone, outside Mexico and Canada | Cost, our arithmetic | Data | Source, checked on |
|---|---|---|---|
| AT&T International Day Pass, postpaid | $84: 7 × $12 | Your plan’s data | AT&T, October 29, 2026 |
| Verizon TravelPass, postpaid | $84: 7 × $12 | 5 GB at high speed per 24-hour session, then 3G | Verizon, October 29, 2026 |
| T-Mobile Essentials, one 10-day International Pass | $50 | 15GB | T-Mobile, October 29, 2026 |
| T-Mobile Experience Beyond | $0 extra | Up to 15GB at high speed, then up to 256Kbps | T-Mobile, October 29, 2026 |
| Our Europe plan | $11.99 | 5GB for 30 days, data only | Our catalog |
| Our Japan plan | $9.99 | 5GB for 30 days, data only | Our catalog |
A pass also carries calls and texts on your US number; our prepaid plans in the table are data only and add data beside it. Where the trip fits inside what a plan already includes, as with Experience Beyond’s 15GB, the carrier wins.
In Mexico, a plan that includes it wins too, and the Mexico guide prices the lines that pay. On such a line, our 1GB, 7-day Mexico plan costs $3.99, data only.
Size your data in how much data you need, then compare any trip by days in roaming vs eSIM. Country detail: Europe, Japan and every guide in eSIM by country.
How does a travel eSIM work with your US line?
On 374 of our 379 plan families, the plan starts on first connection at your destination, not at installation (catalog, October 29, 2026). New to eSIM? What is an eSIM covers the basics.
Two checks come before you pay. Check your phone is unlocked from your US carrier (Is my phone unlocked?, how to unlock). It must also be one of the eSIM-compatible phones (Does my phone support eSIM?).
After you pay, install the eSIM at home on Wi-Fi before you go; the install window is shown on the plan page (install guide).
Your US line can stay on for calls and texts. Apple warns that with both lines on, “You might still incur roaming fees from your home eSIM” (Apple). Codes and texts on that line are covered in keep your US number; other questions are in the help hub.
What to check before you buy
Our USD prices are the total your card is charged. You get a full refund within 30 days of purchase, as long as the eSIM hasn’t connected to a network (refund policy).
We refund within 14 days of your request. The seller is JET SHARING MOBILITY INC. (Delaware, United States), and your card statement shows JET SHARING.
Before you buy an eSIM for international travel, pick days and GB that fit the trip and a destination we sell. Regional plans, such as our Europe plan, cover several countries on one eSIM: browse all destinations.
Sources cited only — expert review pending. For individualized advice, consult a licensed professional.