What is an eSIM and how does it work?

Launched in 2016, eSIM has become a revolution in mobile telephony. It has transformed how we connect on smartphones and connected devices. But what is an eSIM, and how does it work? How will this digital revolution replace the iconic SIM card? What are the concrete benefits for users? And why does eSIM simplify the management of our mobile subscriptions and make them more flexible?

What is an eSIM?

Unlike traditional SIM cards inserted into phones, eSIMs (embedded SIMs) are digital. They are built directly into smartphones, tablets and smartwatches. The format follows a standard defined by the GSMA, the global mobile industry body. After a few simple steps to program it, users can easily connect to their operator’s mobile network without having to handle a physical SIM card. Everything is done via a remote profile download, and that makes all the difference.

How does an eSIM work?

An eSIM works like a SIM card, except that it is entirely virtual. Subscription and activation are done remotely via a QR code or a link. Once the eSIM is activated, your smartphone runs on a new plan. You can still keep other profiles from other operators on the same device. The eSIM allows you to make calls, send messages, and access the internet with more flexible management. A few clicks and your eSIM is up and running!

The advantages of an eSIM: what is it good for?

Adopting eSIM means choosing a technology that simplifies the management of your mobile subscriptions while offering greater flexibility. Here are the main advantages:

• No more physical handling: eSIMs do not require any physical handling and can be installed digitally in record time.
• Enhanced security: unlike physical SIM cards, which can be stolen or lost, eSIMs are digitally integrated into your device, ensuring enhanced data security. If your device is lost or stolen, simply deactivate your profile remotely to block any fraudulent access to your line.
• More economical: eSIM eliminates the cost of purchasing and delivering a physical card, and there are no more shipping costs when changing operators. Customers have a wide choice of plans to suit their telecommunications needs. When abroad, eSIMs reveal their full economic potential with the option of subscribing to a local plan, which reduces often excessive roaming charges, particularly for internet access. A word of advice: prepare for your trip by comparing compatible eSIM operators available abroad and activate it when you arrive.
• More environmentally friendly: its digital form removes the need to produce, package and post a SIM card. It is a simple way to reduce your carbon footprint.
• Flexibility thanks to multiple profiles: with eSIM, you can store several operator profiles on the same device. You then switch easily between personal, professional, local or international plans. It’s the ideal solution for users looking for more flexibility and a must-have for travelers.

The disadvantages of eSIM

Although it is a revolutionary technology, eSIM still has some drawbacks, mainly due to the fact that it is not yet widely known to the general public. Here are its main disadvantages:

• Limited compatibility: not all connected devices are yet compatible with eSIM. This is mainly the case for older mobile phones whose operating system is not compatible with this new technology.
• Number of profiles: this depends entirely on your mobile model.
• Technology dependency: if the device is damaged, it is not possible to simply remove the SIM card and put it in another device. The eSIM profile will need to be transferred to another device, a process that requires reactivation with the operator.

How do you set up an eSIM on your device?

Activating an eSIM is child’s play. Here are the steps involved in the process to understand how it works and how it can fit into your daily life:

1. Choose an eSIM operator

The first step is to choose the right eSIM operator for your needs. Compare 4G and 5G coverage, rates, plan duration, roaming options, countries and any specific features.

2. Activation with a QR code or an app

After subscribing to a plan with an eSIM-compatible operator, you will receive a QR code or link to scan from your device. This code contains all the information you need to activate your line directly on the device.

3. Download the operator profile

Once you have scanned the QR code or opened the link, your mobile will automatically download your operator’s profile. This process includes all the information you need to connect to the network, such as your phone number, plan details, and various connection settings.

In just a few clicks, your eSIM is up and running! Your line is finally ready to use without having to insert a SIM card into your smartphone.

4. Change operators with ease

One of the great strengths of eSIM is the ability to switch operators in a snap. With eSIM, you canhave multiple profiles on a single device. For example, you can have one profile for your main operator and another for a data plan when traveling abroad.

You can switch profiles directly from your phone’s settings. This saves a huge amount of time for travelers or professionals who need to juggle multiple phone lines.

The future of eSIM in telecommunications

eSIM is still little known to the public, yet tech fans, professionals and frequent travelers adopted it long ago. It also keeps gaining ground with manufacturers such as Google, Samsung and Apple, and with operators.

Little by little, eSIM is making its mark and will likely replace the SIM card. This digital revolution could well become the future of mobile connectivity in all connected devices, everywhere in the world.

Is an eSIM worth it? What to remember

Choosing eSIM means opting for a rapidly growing technological solution. Its many advantages offer great flexibility and a whole new mobile network user experience, especially for travelers who can significantly reduce their roaming bills abroad. Its enhanced security limits the risk of theft or even tampering, as the eSIM is integrated into the device and not physically accessible.

By adopting eSIM, you are taking a big step towardsthe future of telecommunications and can already enjoy all its benefits in managing your subscriptions.

Now that you know what an eSIM is, pick the ideal operator on our eSIM comparison tool. Then enjoy the best connection, wherever you travel.