All About eSIM Cards: What is eSIM, How It Works, Setup, Plans & Activation Guide

MobiMatter Team

Feb 19, 2025 — 16 min read

No more fumbling with tiny SIM cards ever again. No more hunting for that little pin to eject your tray or losing your card. What if your phone could change networks, add more lines, or even roam internationally with a few taps?

The world of eSIM cards makes this possible. In fact, by 2027, there will be more than 3.4 billion devices using eSIM cards, and your smartphone could be one of them.

However, you might be thinking what is eSIM card, how does eSIM work? What’s the buzz around it? So, let’s break it down and find out why this virtual SIM card might be the game changer that you didn’t know you needed!

What is eSIM?

What if your SIM card could never be popped out of your phone but was still able to operate? The magic of an eSIM card is a small chip that’s embedded right inside your phone, tablet, or other device. So how does eSIM work and why is it different from the regular physical SIM card?

An eSIM card is a digital version of your physical SIM card and is built into your device’s motherboard instead of being a removable card. It also means no more losing or damaging SIM cards. It is as simple as activating it remotely with your carrier, and it’s the most flexible and convenient.

eSIM cards work a little differently than other SIMs, which need you to insert a physical card with a particular network; instead, eSIM cards are built into a built-in eUICC (Embedded Universal Integrated Circuit Card) chip. With this, you can activate your phone remotely for multiple carriers and networks without the need for a new SIM card. And you can switch networks, activate new plans or even international eSIM cards.

How Does eSIM Work?

Over 20 million eSIM card capable devices were activated globally in 2023, and that number is expected to grow exponentially, eSIM card is changing how we stay connected, assets, and simple. How does esim work? Let’s break it down.

The eSIM card (Embedded SIM) is not a physical card but a digital profile ‘embedded’ inside your device. The eSIM card allows you to change it remotely instead of swapping out a physical SIM card when switching networks or carriers. Here's how it works:

eSIM profiles are activated remotely by your carrier and don’t require a physical card. When you sign up for a plan or switch carriers, they just send a network profile to your phone or device.

Remote provisioning: One of the coolest features of eSIM card is that you can change carriers or update your plan without having to get a new SIM card. Simply adjust your phone’s settings, and you can switch networks in seconds without having to pop in a new card.

Multiple Profiles: eSIM card enables you to carry multiple network profiles at the same time. This is great for people who travel internationally or those who need to switch between personal and business lines. Multiple carriers can be on one device!

eSIM Standardization: eSIM card runs under the eUICC (Embedded Universal Integrated Circuit Card) standard, which means eSIM card is compatible with all devices all over the world, eliminating network restrictions when travelling.

If you are wondering how does eSIM works, let us tell you that they work in a similar way to traditional SIM cards, connecting the device to networks to give your device mobile service. But all of it is digital, so there’s no need for a physical SIM card slot, which makes your phone thinner and more durable.

Simply put, the eSIM card gives you flexibility, convenience, and the ability to stay connected across networks with just a few taps on your phone.

Stay connected worldwide with Global Special 20 GB—valid for 365 days across 110+ countries.

eSIM Activation Process

By 2025, it is expected that more than 1.3 billion eSIM card enabled devices will be in use, and eSIM technology is changing the way we connect, especially for those who are on the move. SIM cards are a thing of the past, and you can now activate your mobile service in just a few steps. We break down the eSIM card activation process, and how easy it is to switch and stay connected.

Step 1: Check if Your Device Supports eSIM Card

Before you go into the activation, make sure your phone is eSIM card compatible. If you have the most recent iPhones, such as iPhone 12 or later, you’re good to go with eSIM card support! To see if your device supports eSIM card, check your device settings or manufacturer’s specifications. You can also refer to MobiMatter’s FAQs for more details on compatibility.

Step 2: Purchase an eSIM Plan

When you have confirmed your device supports eSIM card, it’s time to get your eSIM plan. MobiMatter comes into play here! As a one-stop eSIM marketplace, MobiMatter helps travellers to discover and compare the best mobile offers worldwide. MobiMatter is the best place to look for an affordable plan for local use or for a global package if you are travelling.

Step 3: Receive Activation Details

When you buy your eSIM plan, you will get the activation details, which are usually in the form of a QR code or manual setup instructions. MobiMatter’s secure system will provide these details instantly so you can skip the wait and activate as soon as you can.

Step 4: Add eSIM Profile in Device Settings

Go to your device’s settings, Cellular or Mobile Data, and select the option to add a new eSIM profile. To finish the process, you can just scan the QR code or input the manual setup details. It’s as simple as that!

Step 5: Connect to the Network and Start Using Data/Calls

Now, you’re ready to go! Your device will automatically connect to the network and start using data and calls once your eSIM profile is added. And MobiMatter’s instant activation feature means you’ll never have to wait.

MobiMatter allows you to easily manage multiple eSIM profiles, whether you are at home or travelling so that you are always connected without the hassle of physical SIM cards.

Simply put, the activation of eSIM card has never been easier. Well, with MobiMatter, you also get the advantage of finding and buying the best eSIM card deals all in one place! So, what are you waiting for? With ease stay connected with your device’s eSIM capability.

Connect to the Network and Start Using Data/Calls — eSIM card vs. Physical SIM: What’s the Difference?

eSIM Card vs. Physical SIM: What’s the Difference?

Have you ever wondered what would happen if I told you that the SIM card you’ve been carrying around for years is about to become a thing of the past? ESIM cards are here to make your life easier. In reality, eSIM technology is going to be the future of mobile connectivity, and more than 60% of mobile devices are expected to adopt eSIM by 2025.

However, before you hop on the bandwagon, you may be wondering: What’s the difference between eSIM card and physical SIM? We will break it down in simple terms.

The new cool kid in town is an eSIM card, which is already embedded directly into your device and is a virtual SIM card. That means no more swapping physical SIM cards when you switch carriers or travel internationally! eSIM cards are different from traditional SIM cards because they allow you to activate multiple profiles remotely without having to insert a physical card, saving you time and trouble.

Feature	eSIM	Physical SIM
Size	Embedded inside the device, no physical size	Requires a physical card of specific size (nano, micro, etc.)
Activation	Activated remotely by the carrier through software	Requires inserting the physical SIM card into the device and possibly activating through the carrier’s network
Flexibility	Allows multiple profiles, easy to switch between networks or carriers without needing to swap physical cards	Can hold only one profile at a time; requires swapping physical SIM cards to change carriers or plans
Convenience	No need for a SIM card slot, freeing up space for other features such as larger batteries or smaller device designs	Requires a physical SIM card slot, limiting device size and space for other components
Carrier Switching	Easily switch between carriers and plans via software; remote provisioning makes it faster	Requires physically swapping out SIM cards to change carriers or plans, which can be time-consuming
International Roaming	Simplified with digital profile management, switching to local carriers in foreign countries is faster without needing to find a physical SIM	Requires physically changing SIM cards when traveling internationally, with the added hassle of finding local providers
Durability	No wear and tear since it’s embedded into the device, and cannot be lost or damaged	Can be damaged, lost, or corrupted with frequent swapping, exposure to water, or physical wear
Security	More secure as it's embedded and cannot be removed; it is harder for unauthorised users to swap SIM cards or clone the profile	Vulnerable to theft, loss, or cloning of the physical card, which could compromise security
Compatibility	Only supported by newer devices (smartphones, tablets, smartwatches, and laptops); backward compatibility with physical SIM cards may still be required	Compatible with nearly all mobile devices that have a SIM slot and widely available across all network providers
Activation Time	Instant activation once the profile is downloaded from the carrier’s servers; no need for waiting or shipping	It may require physical installation and carrier activation, which could take longer depending on the carrier
Device Variety	Available primarily in modern smartphones, wearables, tablets, and laptops, but adoption is still growing	Universally supported in all devices with SIM card slots, including older models
Cost	It may require extra fees from some carriers to enable eSIM services, though it’s increasingly becoming standard	Physical SIM cards are usually free or included in mobile plans, but you may pay for international SIM cards or replacement SIMs
Ease of Use	User-friendly interface for managing eSIM profiles; can activate services remotely without needing to visit a carrier store	Some users find physical SIM cards more familiar and prefer the hands-on approach of inserting the card
Multiple Numbers	It can store multiple profiles, making it ideal for people who use two or more phone numbers (e.g., personal and business)	Typically supports only one number per SIM card unless dual SIM is available, which still requires physical swapping of cards
Environmental Impact	More eco-friendly as it reduces the need for manufacturing, packaging, and shipping physical SIM cards	Contributes to plastic waste and requires more resources for manufacturing and shipping SIM cards
Plan Management	eSIM allows easy switching between different plans or carriers without the need for physical interactions with the carrier	Requires manual interactions like visiting a store, contacting customer service, or physically changing SIM cards for plan management

In this modern era, eSIM cards are replacing traditional physical SIM cards rapidly. This is why if you are an iPhone user or planning to get one, knowing how to activate and use your eSIM card can make life a lot easier, especially when travelling or switching carriers!

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Benefits of eSIM Technology

The technology behind eSIM card represents more than an exciting innovation because it creates fundamental changes in the market. Users should consider eSIM technology because it delivers several outstanding advantages which make it essential for modern device operation.

Seamless Carrier Switching

Carrier switching becomes effortless because you eliminate the need to manually switch SIM cards. The eSIM card function enables users to change wireless providers through simple touch commands on their device screens. Users no longer need to visit stores or wait for mail delivery to obtain SIM cards since eSIM card simplifies the process.

Space-Saving Design

The eSIM card enables efficient space management, which benefits thin devices, including smartwatches, tablets and wearable gadgets. Devices are becoming more compact while gaining additional functions because of eSIM card.

Better Security

The implementation of eSIM card provides better security protection by reducing the potential for SIM cloning and theft incidents. Insurgent access to your personal information becomes more challenging because the built-in eSIM cannot be detached from your device, which secures your data during connectivity.

Eco-Friendly

The eSIM system promotes environmental sustainability because users no longer need to use traditional plastic-based SIM cards, thus decreasing their impact on the planet.

Global Connectivity

The eSIM card provides seamless global connectivity because users can connect to local networks easily in any country they visit. The local carrier plan activation works across any foreign country without requiring SIM card exchanges. Traditional SIM card users who travel often will find eSIM card greatly beneficial because it helps them bypass costly roaming fees.

Instant Activation

You can activate instant service because SIM card waiting periods for shipping and mail delivery no longer apply. Your device automatically connects to the internet the instant you establish its setup with an eSIM card.

Multiple Profiles

Many eSIM card compatible devices provide users with storage for multiple carrier profiles to help them switch between their different plans. The eSIM card enables users to manage various phone numbers along with different carrier networks from different regions without needing multiple physical SIM cards.

The door to these outstanding advantages stands open for you. Through MobiMatter users can easily find and activate the best eSIM card deals present in different countries to achieve secure and convenient mobile services worldwide. Start your journey today!

Japan travelers, a local eSIM with 20 GB ensures smooth connectivity for $13.99.

Why Choose MobiMatter for Your eSIM Card Needs?

Seamless connectivity stands essential in modern life which is why MobiMatter provides users a simple way to link up at home or abroad. The end of physical SIM card dependency along with traditional activation times, is now possible. MobiMatter provides you with instantly activated, reliable, and budget-friendly eSIM card solutions that match your specific requirements.

Instant Activation, Zero Hassle

Traditional SIM cards need shipping services followed by waiting periods, and users must perform manual installations. The MobiMatter platform lets you buy eSIM cards online and initiate plan activation through QR code scanning, which takes less than five minutes. No delays, no extra steps—just uninterrupted connectivity.

Best Value for Money

MobiMatter provides customers with outstanding eSIM plan rates that lead the market. MobiMatter provides various affordable eSIM card packages suitable for short-term travel needs or long-term usage which do not include any hidden costs or excessive charges.

Global Coverage Across 190+ Countries

MobiMatter provides global cellular coverage to users who want to connect to new destinations and manage business operations anywhere in the world. MobiMatter extends its coverage to more than 190 countries which ensures you can avoid searching for local SIM cards and remain free from costly roaming charges.

eSIM Plan	Link	Details
Europe and USA 15 GB	Buy Here	$13.99 for 30 days
Happy Tourist Voice and Data	Buy Here	$8.49 for 10 days
Singapore Malaysia and Thailand 30 GB	Buy Here	$14.99 for 30 days
Global Special 20 GB	Buy Here	$63.99 for 365 days
USA 15 GB	Buy Here	$11.99 for 30 days
Japan 20 GB	Buy Here	$13.99 for 30 days
China Premium 20 GB	Buy Here	$13.99 for 30 days
Turkey 10 GB	Buy Here	$7.99 for 30 days
Dubai 10 GB	Buy Here	$18.99 for 30 days
Indonesia 30 GB	Buy Here	$15.99 for 30 days
China Korea Japan 12 GB	Buy Here	$12.99 for 30 days
Europe Unlimited Basic 5 Days	Buy Here	$10.99 for 5 days
Asia Premium 10 GB	Buy Here	$17.99 for 30 days
US CA UK AU NZ 35 GB	Buy Here	$39.99 for 365 days
Saudi Arabia Plus 5 GB	Buy Here	$13.99 for 30 days
LatAm 5 GB	Buy Here	$17.99 for 30 days

Reliable High-Speed Internet

MobiMatter builds alliances with premium telecom providers to provide fast internet connectivity at every destination. MobiMatter ensures constant smooth connectivity for streaming, remote work and location navigation at all times.

Wide Selection of eSIM Plans

MobiMatter provides a complete collection of eSIM card plans that include multilingual data packages together with global connectivity solutions. MobiMatter delivers a variety of data plans which adapt to your personal circumstances through temporary plans, extended plans and unlimited data packages.

24/7 Customer Support for Complete Peace of Mind

Users may experience technical problems combined with connectivity issues during any point in time. MobiMatter delivers continuous support which helps users activate their service and troubleshoots technical issues and manages plans day and night. You can reach help at any location through our service.

A Smarter, More Convenient Way to Stay Connected

MobiMatter delivers a revolutionary mobile connectivity experience for its users. The process of switching to an eSIM card has become straightforward because users get immediate access to affordable plans that provide superior service quality.

You should pick the smarter option for maintaining your connections. Users can now experience the convenient features of MobiMatter eSIM cards.

Future of eSIM Technology: What’s Next?

Mobile technology development drives the rapid growth of eSIM card adoption which defines future connectivity methods. The digital experience becomes more efficient and seamless because devices from smartphones to wearables to IoT devices move toward eSIM cards. The operation of eSIM card remains unclear as do its effects on business sectors and end-users.

Growing Adoption in Consumer Devices

The market for eSIM card continues to grow because major smartphone manufacturers and tablet and smartwatch producers integrate eSIM cards into their devices. An eSIM functions differently from the traditional physical SIM card because it is a built-in programmable chip. Users can change carriers without using a physical SIM because eSIM cards functions as a built-in programmable chip. The leading technology manufacturers have made eSIM card compatibility their main focus which indicates it will become the standard for upcoming devices.

Future of eSIM Technology: What’s Next? — Future of eSIM Card Technology: What’s Next?

The growth of IoT alongside Machine-to-Machine Communication receives substantial benefits from eSIM cards

How do eSIMs work in IoT?

The remote network switching capability transforms smart homes and automotive industries as well as industrial automation systems. Devices that have eSIM card technology enable automatic connection to the most powerful network which improves performance in connected vehicles and security equipment and industrial monitoring systems.

eSIM Card and the Future of Global Roaming

The way eSIM cards function, provides users with the major benefit of removing the need to pay high international roaming costs. Tourists can eliminate the need for buying local SIM cards after their arrival. Users gain immediate access to economical eSIM card plan options without needing to purchase local SIM cards. MobiMatter delivers global eSIM card solutions which provide budget-friendly and continuous connection services to 190+ international territories.

Advancements in eSIM Card Security and Future Developments

Security requirements will need attention as eSIM card technology continues its market growth. Future developments include:

User data protection will benefit from enhanced encryption technology systems.
Blockchain integration for secure identity verification and authentication
Remote SIM provisioning will receive enhancements that will optimise the transition between networks for users.

What’s Next for eSIM Cards?

The growing adoption of eSIM card technology leads to inevitable universal acceptance because users will experience greater flexibility, enhanced security and worldwide improved connectivity. The mobile communication landscape will shift because eSIM card technology establishes new ways for people to connect across different devices between various geographic locations.

MobiMatter eSIM card solutions provide users with a hassle-free method to connect their devices. The digital transformation requires people to change their communication methods right now.

Conclusion

Did you know that by 2025, over 3 billion devices will use eSIM technology? This is the future of connectivity. What is eSIM card, and how does eSIM work? It’s simpler than you think. The eSIM card is embedded directly into your device, without the need for a physical SIM card, and provides seamless connectivity. eSIMs are the future of mobile technology, with easy activation and global roaming without the hassle of swapping SIM cards. Ready to join the revolution?

MobiMatter is an easy way to find, compare, and buy eSIM offers from leading telecom providers around the world. Goodbye to SIM card swapping, hello to easy mobile service wherever you go.

Frequently Asked Questions

1. What is eSIM card?

An eSIM card is an embedded SIM technology that eliminates the need for a physical SIM card. Unlike traditional SIMs, an eSIM card is integrated into your device, allowing remote activation of mobile plans.

2. How does eSIM work?

It digitally stores network profiles and allows users to switch carriers without changing physical SIM cards. eSim card work by connecting to mobile networks through software-based authentication instead of a removable chip.

3. What is eSIM card, and how does eSIM work?

An eSIM card is a digital version of a SIM that enables mobile connectivity. It allows users to activate a mobile plan by downloading a profile from their carrier.

4. How do eSIM cards work in different devices?

They function by storing multiple network profiles, making it easy for users to switch carriers instantly. Devices such as smartphones, tablets, and smartwatches now support eSIM card technology.

5. What an eSIM card and its benefits?

eSIM card is a built-in SIM that offers benefits like remote activation, dual SIM support, and seamless international roaming. It allows users to activate multiple plans without swapping physical SIMs.

6. What is the meaning of eSIM?

The eSIM card refers to Embedded Subscriber Identity Module, a digital SIM that operates through software rather than a physical card.

7. How does eSIMs work for international travel?

They provide instant connectivity by allowing users to purchase and activate mobile plans without visiting a store. MobiMatter offer cost-effective eSIM card plans for over 190 countries.

8. How does eSIM work with dual SIM functionality?

Many devices support eSIM card + physical SIM setups, enabling users to use two numbers on a single phone.

9. How to use eSIM on iPhone and Android?

Here is the process of how to use eSIM card

Checking if your device supports eSIM card technology.
Choosing a provider offering eSIM card plans.
Scanning the QR code provided by the carrier.
Activating the eSIM card through device settings.

10. How do eSIM cards work in smartwatches?

Smartwatches with eSIM support can connect to cellular networks without a paired smartphone, enabling calls and internet access on the go.

11. What is eSIM card and why should you switch?

It is a revolutionary SIM card technology that enhances convenience, security, and flexibility. It offers faster activation, reduced reliance on physical SIMs, and supports multiple carrier profiles.

12. How does eSIM work for business users?

Business users can maintain multiple numbers for personal and work use on a single device.

13. How do eSIMs work with prepaid plans?

Users can instantly download and activate prepaid plans without needing a physical SIM.

14. What is the difference between a physical SIM and an eSIM card?

Unlike a plastic SIM, an eSIM card is built into the device and can be reprogrammed for different networks without physical swapping.

15. How do eSIMs work for IoT and smart devices?

Devices like smart home systems and connected cars use eSIM card technology for continuous connectivity without requiring a physical SIM slot.

16. What is a SIM card, and how does it compare to an eSIM card?

A traditional SIM card is a removable chip, while an eSIM card is embedded in the device and managed remotely.

17. How does eSIM work for roaming?

It enables seamless roaming by letting users switch to local network plans instantly.

18. What is eSIM card, and is it secure?

It is a secure, tamper-proof SIM technology embedded in devices. It encrypts network information to prevent unauthorized access.

19. How to use eSIM card for better network coverage?

Users can switch between multiple carriers for the best network quality without changing SIMs.

By now we hope you have a good understanding of eSIM cards. Choose the best eSIM card plans from Mobimatter for your next international travel, install the eSIM at the airport and activate the plan the moment you land to get seamless data. Check out this video on how to set up your eSIM card.

Travel Smarter with Mobimatter.