The eSIM is an evolution of the traditional SIM card. It’s a virtual SIM that’s already embedded in your mobile device. In other words, you no longer need a physical card to connect to mobile networks.

All you have to do is install a profile from an app or scan a QR code and that’s it—you’ve got an active line. There’s no need to visit a store or swap chips.

Most recent phones include this technology, which is perfect for travelers and digital nomads. With it, you can purchase international data services and plans from anywhere in just a few minutes.

If you want to learn more about what an eSIM is, how it works, and the best options to use it, keep reading.

What is eSIM, how it works, and the best options to use it

What is an eSIM and how does it work?

An eSIM is a virtual version of a physical SIM card. That is, you don’t need to insert it into the device because it’s already integrated into the phone as part of the motherboard and you can’t see it.

And how does an eSIM work? How do you activate an eSIM? Very easily:

• Simple installation. You just scan a QR code or set up your profile with the carrier—depending on the method, you might even get the eSIM for free.

• No need to swap chips. You don’t have to remove a chip and replace it with another—everything is done digitally.

• International connection. An eSIM lets you purchase data plans that work in most countries, without needing to buy a chip in each place you visit.

• Multiple accounts. Some devices let you configure several eSIMs at once, which is ideal for separating personal from work lines.

eSIM vs. traditional SIM: Which is better?

How is an eSIM different from a traditional SIM? Which is better? To answer that, check the comparison below and decide for yourself:

If you’re a frequent traveler or digital nomad, the eSIM is a more convenient and flexible alternative for you.

Advantages and disadvantages of eSIM

Advantages of eSIM include:

• No physical chip needed. You don’t handle a physical SIM card, which saves time and avoids losing it.

• Easy to activate. Just scan a QR code or activate it from your carrier’s app.

• Perfect for travelers. No need to buy cards in every destination—just activate an international plan and you’re set.

• More secure. Since it’s embedded in the device, you can’t lose it and put your contacts at risk.

• Affordable plans. eSIMs often offer plans cheaper than your carrier’s international add-ons or buying a physical SIM at your destination.

Of course, not everything is an advantage with eSIMs—keep these drawbacks in mind:

• Not compatible with all phones. It’s only available on recent devices; for example, on Apple you need an iPhone XR or newer.

• Carrier dependency. If your device supports eSIM but your carrier doesn’t, you’ll need to switch providers.

The advantages of eSIM outweigh the drawbacks, and it’s a technology that’s replacing the traditional model. As a result, the cons will fade. Plus, a tip for freelancers: look for phones with eSIM—especially if you like to work while traveling.

Prepaid eSIM: Freedom without a contract

Unlike postpaid eSIMs, prepaid eSIMs let you pay only for the time or data you actually need. This setup is perfect for frequent travelers, freelancers, and digital nomads because it offers immediate, hassle-free connectivity.

If you’re looking for prepaid eSIM options, here are three of the most commonly used today:

• Holafly. Plans available for 160+ countries; one of the most popular among frequent travelers because it offers unlimited data in most destinations.

• Saily. Stands out for security and affordable plans—developed by the same team behind NordVPN.

• Telcel. This Mexico prepaid eSIM not only offers nationwide coverage, it also lets you add international data plans.

When should you choose a prepaid eSIM? When you’re taking short trips abroad or visiting multiple countries on vacation.

eSIM Europe: Connection in top destinations

Just like apps for traveling around the world, having a Europe eSIM is essential when you visit the Old Continent. This technology lets you connect the moment you land, without relying on Wi-Fi or hunting down a shop for a local SIM.

With a Europe eSIM you can use a single plan across several European countries without changing numbers or paying extra fees. Which operators can you use? Take a look at this table:

And if you’re wondering whether a European eSIM is better than international roaming… The answer is yes. With an eSIM you won’t be hit with high data charges, and you can switch plans or providers whenever you like.

It’s like the freedom you have when buying in the USA and receiving in Mexico—meaning you don’t have to adapt to your local provider’s offer. Ideal if you’re a freelancer or frequent traveler.

Free eSIM: Myth or reality?

When you hear or read “free eSIM,” it can be confusing—you might think it includes a free data plan.

However, that’s not the case. What some carriers offer at no cost is the activation or download of the digital chip. To use phone or data service, you’ll always need an associated plan.

In other words, the free part is usually the eSIM profile, not the connectivity. Just like with a physical SIM, you must purchase a data or minutes package to use it.

In Mexico, carriers like Telcel, Movistar, and AT&T offer free eSIM activation. However, to use data, talk, and text, you must pay for a plan.

The same happens with global providers like Vodafone or T-Mobile, where the virtual card is free but the plan is paid.

How do you know if your phone has eSIM?

eSIMs are compatible with many phones:

• iPhone

• Samsung

• Xiaomi

• Huawei

• Google Pixel

• OPPO

• Motorola

• VIVO

• HONOR

• And many more.

To check if your phone is compatible with an eSIM, verify it manually.

On Android devices, follow these steps:

1. Open the Phone app and dial *#06#.

2. In the info that appears, check for the EID code.

3. You can also go to Settings → Connections and tap SIM Manager.

4. If you see Add eSIM, your phone is compatible.

If you have an iPhone, do this:

1. Go to Settings → General → About.

2. Scroll to the Carrier Lock section.

3. If it shows No SIM restrictions, then your iPhone is compatible with eSIM.

4. Another way is Settings → Mobile Data and check that Add eSIM appears.

If you’re traveling soon, make sure your device supports eSIM so you can enjoy greater flexibility and better data packages.

Conclusion

eSIM offers many advantages—from simple activation, security, and flexible plans to cheaper costs on international data. It’s ideal for frequent travelers, digital nomads, and people working remotely.

Many carriers now offer eSIM, but not all have global data bundles. However, there are options like Holafly with plans usable in 160+ countries. Unlike conventional roaming, the cost is more accessible and offers greater flexibility.

In short, eSIM simplifies your connection—just as DolarApp simplifies your finances with more security, flexibility, and without borders.

Frequently asked questions

What’s the difference between a SIM and an eSIM?

The main difference is that a SIM is a physical card, while an eSIM is virtual and embedded in the device. Plus, with an eSIM you can store multiple profiles, whereas a conventional SIM only lets you use one at a time.

Does an eSIM work without internet?

For initial setup you do need internet; after configuring your profile, you can use it without Wi-Fi. When you create your profile, you connect to the carrier’s network and can use mobile data to browse, make calls, etc.

Can I have two lines with an eSIM?

Yes. You can use one conventional SIM and one eSIM, or two eSIMs if your device supports it. That way you can separate your work line from your personal number—or keep one for travel and another for your home country.

How do I activate a prepaid eSIM?

To activate a prepaid eSIM, purchase a digital plan, scan the QR code your carrier sends, and follow your phone’s instructions. In seconds you’ll have service—no card insertion or paper contract required.

Sources:

eSIM Telcel

eSIM Holafly

Use an eSIM when you travel – AppleHow do I check if my device has eSIM? – +Móvil Panama