What Is an eSIM, and Is It Cheaper Than Roaming? (US 2026)

Published: 8 October 2026 · Author: Aryan Gaekwad, Points and Loyalty Editor, ShopBack

ShopBack US is a free cashback app and website. Before you book a travel eSIM, hotel or tour on sites like Klook or Trip.com, you go through ShopBack, book as usual, and get part of what you paid back as cash. Sign up for ShopBack before you book your next trip.

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What is an eSIM, and is it cheaper than international roaming?

An eSIM is a SIM that lives in your phone as software, and for many US travelers it is the cheaper way to get data abroad on trips of several days or more. Apple describes an eSIM as a digital SIM that lets you activate a cellular plan from a network provider without using a physical nano-SIM, and says worldwide providers offer eSIM plans in over 190 countries and regions.

Roaming means your US carrier lets you use a partner network abroad and charges you for it. A travel eSIM means you buy a separate prepaid data plan for your destination and add it to your phone next to your US line.

	US carrier roaming	Travel eSIM
How you pay	Daily fee or monthly plan on your phone bill	One prepaid plan per trip
Example price	Verizon TravelPass: $12 a day in 210+ countries, $6 a day in Canada and Mexico	Priced by destination, data and days on the seller's page
Setup	Usually none; it works when you turn roaming on	Scan a QR code and set it as your data line
Calls and texts on your US number	Included in the day pass	Keep your US line on for calls and texts; many travel eSIMs are data only
Phone needs	Any phone on your plan	eSIM-capable, and unlocked to use another provider

On a 7 day trip, Verizon's TravelPass adds up to $84, and on a 14 day trip to $168. Verizon's own alternative for longer trips is a $100 International Monthly Plan with 20 GB of high-speed data, 250 minutes and unlimited texts, which Verizon describes as ideal for trips of 9 days or longer. A prepaid travel eSIM for the same trip often costs less than a week or two of day passes, depending on the destination and how much data you need, so compare the live price on the seller's page against your carrier's total.

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eSIM basics: how a travel eSIM works

A travel eSIM works in four steps: buy, install, switch on, and top up if you need more data.

1. Buy the plan before you go. Pick the destination, number of days and amount of data.
2. Install it with a QR code. The seller sends a QR code or activation details by email or in the app. Trip.com describes this as scanning a code to install the plan with no need to swap SIMs.
3. Switch data to the eSIM when you land. Keep your US line on for calls and texts, and set the travel eSIM as your data line.
4. Turn off data roaming on your US line. This stops your carrier from starting a daily roaming charge by mistake. Verizon notes you are charged for TravelPass only on days you use your phone abroad.

Things to check first:

• Is your phone eSIM-capable? Most recent iPhones and many Android phones are. Check your phone's settings or the maker's support page.
• Is your phone unlocked? Apple says an unlocked iPhone can use eSIM plans offered by other carriers. A carrier-locked phone may not accept a travel eSIM.
• Do you need a local number? Klook lists its travel eSIMs as data only. Messaging and calling apps work over data.

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eSIM in 2026: when roaming still makes sense

In 2026, roaming can still be the better pick for very short trips, carrier-locked phones, or plans that already include international use. Verizon, for example, says its Unlimited Ultimate plan includes international data, talk and text, and that Canada and Mexico use is included with all its Unlimited plans and other select plans. If your plan already covers your destination, you may not need anything else.

Your trip	Usually cheaper option	Why
One day across the border	Roaming or your plan's included use	One day pass or no charge at all
A week or more abroad	Travel eSIM	A day pass adds up quickly; an eSIM is priced per trip
Multi-country trip	Regional or global travel eSIM	Trip.com lists a global plan covering 77 countries at the time of writing
Carrier-locked phone	Roaming	A locked phone may not accept another provider's eSIM
Need your US number for calls all day	Roaming, or eSIM plus your US line for calls	Depends on how much you call

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eSIM best deals in the US for 2026

The best eSIM deals for US travelers in 2026 come from buying only the data you need, for the days you need it, and booking it through ShopBack. Practical ways to pay less:

• Size the plan to your trip. Both Klook and Trip.com list plans from 1 to 30 days. Trip.com offers daily data plans and total data plans, so pick the one that fits how you use your phone.
• Use Wi-Fi for heavy downloads. Download maps, playlists and shows on hotel Wi-Fi so a smaller plan is enough.
• Pick a regional plan for multi-country trips. One plan across several countries can work out cheaper and simpler than buying one per country, so price both.
• Check the seller's own offers. Klook and Trip.com may list their own promo codes or coupons on eSIM pages from time to time; read the minimum spend and terms before you apply one.
• Book through ShopBack. Open the store page on ShopBack US, activate, then buy the eSIM in the same session.

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Klook vs Trip.com: eSIM price comparison for 2026

There is no fixed price winner between Klook and Trip.com for an eSIM in 2026, because each prices plans by destination, network, data and days. The fair comparison is the same destination, same number of days and same data amount on both sites.

Compare this	Klook	Trip.com
Plan length	1 to 30 days, according to Klook's listings	1 to 30 days, according to Trip.com's listings
Plan types	Destination eSIMs listed as data only, 5G or 4G LTE depending on the network	Daily data and total data plans, with 24-hour billing
Coverage	Klook's eSIM page lists 50 plus countries	Single-country plans plus a global plan covering 77 countries at the time of writing
Delivery	Instant confirmation, with plans you can book for the same day	QR code or activation code by email or in the app
Best for	Asia trips where you also book tours and attractions on Klook	Trips where you also book flights and hotels on Trip.com

Klook's listings also show the network behind each plan, such as SoftBank or DOCOMO in Japan and SKT in South Korea, which helps if you care about coverage in a specific area. Whichever site wins on your trip, book it through ShopBack.

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Klook and Trip.com eSIM for US travelers: how to book

For US travelers, the simplest way to buy a Klook or Trip.com eSIM is to plan the trip first, then book the eSIM with the rest of the trip through ShopBack. Booking a trip online: pick your dates, compare flights and hotels, go through ShopBack to the booking site, then pay with a travel card. The eSIM fits into the same flow:

1. Pick your dates and destination. This sets how many days of data you need.
2. Compare flights and hotels. Trip.com covers flights and hotels; Klook covers tours, attractions and transport.
3. Go through ShopBack to the booking site. Open the Klook or Trip.com page on ShopBack US and activate.
4. Add the eSIM. Buy the plan for the same dates in the same session.
5. Pay and install. Pay with your travel card, then install the eSIM on Wi-Fi before you fly.

Other travel sites in the same category on ShopBack US include Expedia, Agoda, Booking.com and Viator, so you can book the rest of the trip the same way.

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How ShopBack lowers the cost of your trip

Going through ShopBack gets you a cash rebate on the same order, at the same store. Cashback lowers what you actually pay for an order. It comes back as cash, so it works like a discount on the price, not like points or miles.

Here is a worked example with an illustrative rate. Say you book a $600 hotel stay and a $30 eSIM on Trip.com, $630 in total. At an illustrative 5 percent, $31.50 comes back, so the effective price is $598.50. The real rate is shown on each store's ShopBack page, can differ by product type and can change, so check the live rate on the Trip.com or Klook page on ShopBack before you book.

How to do it:

• Start on the ShopBack US app or website, or use the browser extension.
• Open the store page, for example Klook on ShopBack, and activate.
• Book in the same session without switching to another coupon site.
• Check the store's terms on its ShopBack page, since some product types may not qualify.

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Frequently asked questions

What is an eSIM, and is it cheaper than international roaming?

An eSIM is a digital SIM built into your phone that lets you activate a cellular plan without a physical SIM card. For US travelers, a prepaid travel eSIM is usually cheaper than carrier roaming on trips of several days, because a carrier day pass such as Verizon's TravelPass costs $12 a day in most countries, while travel eSIM plans are priced per trip by data and days.

How much does international roaming cost with a US carrier?

It depends on your carrier and plan. Verizon, for example, lists TravelPass at $12 a day in more than 210 countries and destinations and $6 a day in Canada and Mexico, charged only on days you use your phone abroad, or a $100 International Monthly Plan with 20 GB of high-speed data. Check your own carrier's international page before you travel.

Does my phone support eSIM?

Most recent iPhones and many Android phones support eSIM, but check your phone's settings or the maker's support page. Apple says that if your iPhone is unlocked, you can also use eSIM plans from other carriers. A phone locked to your US carrier may not accept a travel eSIM.

Can I keep my US number while using a travel eSIM?

Usually yes on phones with dual SIM support. You keep your US line installed for calls and texts and set the travel eSIM as your data line. Turn off data roaming on your US line so your carrier does not start a daily roaming charge.

Do travel eSIMs include a phone number?

Many do not. Klook lists its travel eSIMs as data only, and many Trip.com plans are data plans too. You can still use apps for messages and calls over data, and keep your US number on your home line.

How do I install a travel eSIM?

After you buy, the seller sends a QR code or activation details by email or in the app. You scan the code in your phone's cellular settings to add the plan, then switch it on as your data line when you land. Install it before you leave home while you are on Wi-Fi.

Is Klook or Trip.com cheaper for an eSIM?

Neither is always cheaper, because prices depend on the destination, the network, the data amount and the number of days. Klook lists eSIMs for many destinations with 1 to 30 day validity, and Trip.com offers daily and total data plans for 1 to 30 days. Compare the same destination, days and data, then book the better plan through ShopBack.

When is roaming better than an eSIM?

Roaming can make more sense on a very short trip, if your phone is carrier locked, if you need calls and texts on your US number without setup, or if your plan already includes international use. Verizon, for example, says its Unlimited Ultimate plan includes international data, talk and text.

How long does a travel eSIM last?

It depends on the plan you buy. Klook and Trip.com both list plans with validity from 1 to 30 days, and Trip.com describes its plans as using 24-hour billing. Pick a plan that covers your full trip, including travel days.

How does ShopBack lower the cost of a trip?

Going through ShopBack gets you a cash rebate on the same order, at the same store. Open the Klook or Trip.com page on ShopBack US, activate, and book in the same session. Cashback lowers what you actually pay for an order and comes back as cash, so it works like a discount on the price, not like points or miles.

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Key takeaways

• An eSIM is a digital SIM that lets you add a cellular plan without a physical card, as Apple describes it.
• Verizon's TravelPass costs $12 a day in 210+ countries, so a 7 day trip runs $84; a travel eSIM is usually cheaper for a week or more.
• Check that your phone is eSIM-capable and unlocked, and turn off data roaming on your US line.
• Klook and Trip.com both list eSIM plans from 1 to 30 days; compare the same destination, days and data.
• Plan the trip, then go through ShopBack US to Klook or Trip.com before you pay.

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Related reads

• Klook Discounts and Deals
• Trip.com Discounts and Deals
• US Travel Cashback Hub
• Is Travel Insurance Really Worth the Cost?
• Earn Cashback on Hotels and Flights

Book your trip through ShopBack US: Klook · Trip.com · Expedia · Agoda · Booking.com

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Disclaimer

The views in this article are those of the author and are for general information only. Carrier roaming prices, eSIM plans, coverage, device compatibility and seller offers vary by carrier, plan, destination and device and can change at any time; check the current terms with your carrier and on the seller's page before you buy. Cashback rates on ShopBack vary by store and campaign; check the current rate and terms on each store's ShopBack page before you book.