Guides

What is an eSIM and how does it work in 2024?

Written by: Flexnet

Foto: Photo by Lukas Gehrer/Pixabay

An eSIM is an embedded SIM card available in most modern phones. Once activated, it allows you to access an alternative mobile data plan from a provider, without using your primary SIM card. In this article, we walk you through everything you need to know about the eSIM.

What is an eSIM card?
The eSIM is a virtual SIM card within your phone: it’s software, not hardware. An eSIM connects you to a mobile network, supports internet roaming, and lets you make calls and text on any plan you choose.

It’s accessible remotely, so you don’t have to swap a physical SIM card to enjoy the advantages of your eSIM.

Important to know is:

Not all cell phones are eSIM compatible
The eSIM works thanks to a microchip installed on your cell phone
The main difference between an eSIM and SIM cards is that an eSIM is virtual and is not stuck to one provider.

How does an eSIM card work?

An eSIM, or embedded SIM, is integrated directly into your device’s hardware, eliminating the need for a physical SIM card. This innovative technology allows you to switch service carriers or plans effortlessly through an app, by scanning a QR code, or via a menu in your device’s settings.

With an eSIM, you can enjoy the benefits of SIM technology without the hassle of opening your phone to swap out cards, making it an ideal solution for travelers seeking convenience and flexibility!

What are the differences between eSIM cards and traditional SIM cards?


The primary distinction between an eSIM and a traditional SIM card is that an eSIM is entirely virtual. Unlike conventional SIM cards that require a physical chip, an eSIM operates without one. However, to utilize an eSIM, you will need a compatible smartphone. Generally, only the latest-generation devices support this technology, making it essential for modern travelers looking to stay connected seamlessly.

By understanding the advantages of eSIM technology, you can make informed decisions about your mobile connectivity while traveling in Europe.

What can you do with an eSIM?

An eSIM is especially handy because of the various features it provides. Specifically, eSIMs enable you to:

  • Access data roaming
  • Provide network authentication
  • Activate mobile plans remotely
  • Store multiple profiles

What are the disadvantages of an eSIM?

While eSIMs offered by Flexnet.es eliminate the need for traditional SIM cards and simplify switching data plans, there are some considerations to keep in mind. Here are a few potential drawbacks of using eSIMs:

  • Device Compatibility: Your phone must be eSIM-compatible, which is a feature found in relatively newer devices. If you're using an older model, you may need to stick with a traditional SIM card.
  • Limited Features: Some eSIMs may not support phone calls and text messages. Only select local carriers and a few international providers, like those available through Flexnet, include these essential features.

By understanding these factors, you can make the most of your eSIM experience with Flexnet as you travel through Europe.

Which phones are eSIM compatible?

Nearly all iPhones support the installation and activation of eSIMs, and most recent Android devices are also compatible with these virtual SIM cards. Not sure if your phone has this functionality?

You can easily check your phone’s eSIM compatibility in its settings.

Here are some popular eSIM-compatible models:

  • iPhone 14
  • iPhone XR
  • iPhone XS
  • iPhone XS Max
  • iPhone 11 to iPhone 16
  • Huawei P40 – Huawei Pura 70 Pro
  • Samsung Galaxy S20 – S24
  • Galaxy Z Fold2 5G – Samsung Galaxy Z Flip5 5G
  • Google Pixel 3 – Google Pixel 8

Make sure your device is ready for a seamless experience with eSIM technology before buying your eSIM.