What is an eSIM? Cheap Mobile Data for International Travel

Or waste time hunting for a local SIM card in a foreign city? Both options can be frustrating and inconvenient.

This is where eSIMs come in. But what is an eSIM and how does it work? In this article, we’ll explain what an eSIM is, how it differs from a traditional SIM card, and why it’s quickly becoming the easiest way to stay connected when you travel. We’ll also cover its benefits, compatibility, and how you can set one up on your device before your next trip.

What is an eSIM, and how does it work?

An eSIM (short for embedded SIM) is a SIM card that’s built directly into your phone, tablet, or smartwatch. Instead of physically inserting a tiny plastic card into your device, the eSIM is already soldered onto the device’s motherboard.

So, how does an eSIM work? Your mobile carrier provides you with a digital profile, usually by scanning a QR code, entering eSIM details manually, or downloading it through an app. This profile tells your eSIM which network to connect to and what data plan you are on. Once installed, your device can connect to the local cellular network just like it would with a regular SIM card.

eSIM cards have many benefits, especially when it comes to traveling abroad. One of the best parts is that eSIMs are not locked to one carrier at a time. You can store multiple profiles on a single device and switch between them with just a few taps. This means you can keep your regular number for calls and texts while activating a local data plan abroad, all without swapping physical cards.

eSIM vs. physical SIM and data roaming

When traveling, you usually have three main ways to stay connected: using an eSIM, buying a local physical SIM card, or sticking with your home carrier’s data roaming plan. Each option has its pros and cons, but eSIMs are quickly becoming the most convenient choice for frequent travelers.

Here is a quick comparison to help you see the differences:

8 reasons to use an eSIM while traveling

Travel eSIMs are becoming a popular choice for good reason. Here is why they stand out compared to traditional options:

• Affordable pricing. Travel eSIMs often offer competitive data plans that cost far less than traditional roaming charges. Many providers even have regional or global bundles that give you great value when visiting multiple countries.
• No SIM swaps. You no longer need to juggle plastic SIM cards or worry about losing your home SIM. Everything stays neatly stored on your device.
• Digital setup. No searching for a store or waiting in line at the airport. You can activate your eSIM by simply scanning a QR code or using an app.
• Flexible plans. There are plenty of plan options to suit different travel needs. You might choose a small data package for a short weekend trip, or go for a larger plan if you are traveling for several weeks.
• Added security. Since an eSIM cannot be physically removed, it’s harder for thieves to misuse if your phone is lost or stolen.
• Set it up before you travel. You can download and install your eSIM plan at home, so you are connected the moment your plane lands.
• Keep your usual phone number. Many phones allow you to use an eSIM for travel data while your physical SIM stays active. This way, you keep receiving calls and texts on your usual number without paying roaming fees.
• Eco-friendly. By going digital, you reduce the plastic waste and packaging associated with traditional SIM cards.

Saily – our recommended best eSIM for international travel

When planning your trip abroad, we recommend checking out the Saily eSIM, created by the cybersecurity company behind NordVPN. Saily offers mobile data plans in over 200 destinations worldwide, including a variety of local, regional, and global data plans. Plus, the prices are incredibly affordable, starting at just $1.89 per gigabyte.

What’s great about Saily is its flexibility. You’ll most likely find a plan that fits your trip perfectly, with options from 1 GB to 20 GB in most locations, and durations ranging from 7 to 30 days. Additionally, some countries offer unlimited data plans, which gives you even more choices. If you find yourself running low on data, you can quickly top up your plan through the Saily app.

Saily also comes with some solid security features. You can change your virtual location and block ads and malicious websites, which not only helps protect you from cyber threats but also saves your data. According to an independent report, this feature can reduce data usage by an average of 28.6%, which could save nearly 3 GB on a 10 GB plan. These extra security features give you peace of mind while keeping your data usage in check.

Below is a table with pricing examples for some popular destinations:

Why do we recommend Saily eSIM?

• Mobile data plans in over 200 destinations
• Flexible data packages, including local, regional, and global options
• Starting at just $1.89 per GB, much more affordable than traditional roaming
• Easy to top up with additional data when needed
• eSIM installation is a one-time process; for future trips, simply purchase a new plan
• The Saily app is simple and intuitive to use
• 24/7 customer support available to assist whenever needed
• Includes extra security features like the ability to change your virtual location and block ads and malicious websites

How to install and activate an eSIM?

Setting up a travel eSIM is typically a quick and simple process, though the steps can vary slightly depending on the provider.

For example, with Saily, you have a few different methods for installation, but the easiest and fastest one is automatic setup. Once you purchase your plan, just tap “Check your eSIM plan,” then select “Install eSIM,” followed by “Allow,” and follow the on-screen instructions to complete the installation.

As for plan activation, it happens automatically as soon as you arrive at your destination. Just make sure to enable data roaming for the Saily eSIM once you land.

If automatic installation isn’t available, you can also set up your eSIM manually by either scanning a QR code or entering the details directly. Below, you'll find a step-by-step guide to walk you through the process.

How to activate eSIM on iPhone?

1. Open the Settings app on your iPhone.
2. Tap “Check your eSIM plan,” followed by “Install eSIM.” Installation instructions will appear on your screen.
3. Navigate to Settings > Mobile Service > Add eSIM.
4. Choose to either scan a QR code or enter the eSIM details manually.
5. Follow the on-screen prompts to complete the installation.

How to activate eSIM on Android?

1. Open your device’s Settings.
2. Tap “Check your eSIM plan,” then select “Install eSIM.” Step-by-step instructions will be provided.
3. Go to Settings > Connections > SIM Manager > Add eSIM.
4. Select whether you want to scan a QR code or enter the eSIM details manually.
5. Follow the on-screen instructions to finish the installation.

Is my phone eSIM-compatible?

Most smartphones released since 2018 support eSIM technology, but compatibility can still vary depending on the model, the region where it was bought, and even the carrier you are using. Here’s a quick overview of which devices generally support eSIM:

• Apple. iPhone XS and newer models (including XR and the 11 through 16 series) all support eSIM. In the US, iPhones starting with the iPhone 14 no longer have a SIM tray at all as they’re eSIM-only.
• Samsung. Most Galaxy phones from the S20 series and newer support eSIM, as do the Z Flip and Z Fold models. Keep in mind that some regional or carrier-locked versions might not.
• Huawei. The P40 and Mate 40 series include eSIM support, though availability can vary by region.
• Google. Pixel 3 and newer support eSIM, including the 4 through 8 series. Regional differences may apply, especially on older devices like the Pixel 3a.
• Motorola. The Razr (2019 and newer) supports eSIM, as do select Edge models like the Edge 40 and Edge 40 Pro.

If you’re not sure whether your phone supports eSIM, here are a few ways to check:

• Look in your phone’s settings.
  • On iPhone: Go to Settings > Cellular (or Mobile Data) and check if you see an option like Add eSIM or Add Cellular Plan.
  • On Android: Head to Settings > Network & Internet > SIMs, or search for "eSIM" directly in the settings menu.
• Dial *#06#. Dialing *#06# on your phone will display the EID (Embedded Identity Document) if your device supports eSIM. The EID confirms that your phone has eSIM functionality.
• Check the manufacturer’s website. Visit the official site for your phone model and review the specifications to confirm eSIM compatibility.

How to choose an eSIM for international travel?

When selecting an eSIM for your trip abroad, it’s important to carefully consider your personal internet needs and travel specifics, as well as choose a reliable eSIM provider. Here are some factors we recommend paying attention to:

• Data usage and internet habits. Consider how much data you may need during your trip. Will you primarily be using the internet for browsing and maps, or will you also be streaming videos and working remotely? It’s important to choose a plan that matches your data needs.
• Trip duration. Keep in mind that different data plans typically have different validity periods. Choose a plan that will cover the entire duration of your trip.
• Price. Compare offers from different providers, considering not only the initial cost but also the amount of data and the duration of use. It’s important to note that the cheapest plan may sometimes have poorer network quality or hidden restrictions.
• Network quality. Check whether the eSIM provider collaborates with reliable local operators. This ensures better coverage, faster internet, and a more stable signal. Additionally, some eSIM providers work with multiple operators in one location, allowing you to switch between them if the connection becomes poor.
• Customer support. If issues arise while installing or using the eSIM, reliable customer support is crucial. We recommend choosing a provider that offers 24/7 customer service.
• Additional features. Some providers offer extra features, such as the ability to top up your plan, share data with other devices (tethering), or additional cybersecurity features. Choose a provider that supports the features most important to you.

Conclusion

eSIMs make staying connected while traveling much easier. You can load multiple profiles, switch carriers in seconds, and skip the fuss of buying and swapping physical SIM cards abroad. With affordable international data plans and the option to set everything up before you leave, they’re a convenient choice for travelers.

Services like Saily offer flexible plans in over 200 destinations and include helpful security features. If your phone supports eSIM, it’s a practical way to avoid high roaming costs and stay connected wherever your trip takes you.

FAQ

1. Is eSIM better than a SIM card?

In many cases, yes. An eSIM is more flexible and convenient than a physical SIM card. It lets you activate mobile plans digitally, switch between carriers without changing SIMs, and store multiple profiles on one device. For travelers, this means no more hunting for SIM cards or dealing with roaming fees.

2. Can I have 5G with an eSIM?

Yes, eSIMs support 5G, as long as your device and carrier both offer 5G connectivity. The technology behind eSIM doesn’t limit your connection speed. If your phone supports 5G and you're using a 5G-compatible eSIM plan from your carrier, you'll be able to access the full speed and performance of a 5G network.

3. Does an eSIM give you a phone number?

Most travel eSIMs, like Saily, are data-only, meaning they don’t include a phone number or support traditional calls and texts. However, you can use a data-only eSIM for internet and keep your regular SIM active for calls and texts. This way, you stay connected online without roaming fees, while still receiving messages and calls on your usual number.