The advent of mobile technology has brought about a lot of changes in the world. One significant improvement has been the introduction of the eSIM card. The eSIM card is a newer and more advanced version of the traditional physical SIM card that has been used for years. This article will explore in detail what an eSIM card is, how it works, and the differences between eSIM and Physical SIM cards.

eSIM là gì? Ưu nhược điểm eSIM và có nên dùng eSIM trên iPhone không?

Advantages of using an eSIM card

There are several benefits to using an eSIM card over a physical SIM card:

  1. Flexibility: With an eSIM card, you don’t have to worry about carrying around different SIM cards when traveling. Instead, you can switch between networks on your device easily.
  1. Convenience: An eSIM card is embedded within your device, which means you don’t have to worry about physically inserting and removing a SIM card from your phone or tablet.
  1. More space: In smartphones, an eSIM card takes up less physical space compared to a physical SIM card, allowing for slimmer device designs.
  1. Remote provisioning: It’s possible to activate an eSIM card remotely without having to visit a physical store or wait for a new SIM card to arrive in the mail.
  1. Multiple plans: With an eSIM card, you can use multiple network plans simultaneously, such as having both a local and international data plan.


  • Flexibility
  • Convenience
  • More space
  • Remote provisioning
  • Multiple plans

Disadvantages of using an eSIM card

While there are plenty of advantages to using an eSIM card, there are also some downsides to consider:

  1. Limited compatibility: Some devices do not support eSIM technology, or may only support eSIMs from a limited number of providers.
  1. Cost: The initial cost of purchasing an eSIM compatible device can be higher than purchasing a device that only supports traditional SIM cards.
  1. Limited availability: eSIM technology is still relatively new, and not all countries have providers who offer it.


  • Limited compatibility
  • Cost
  • Limited availability

How does an eSIM card work?

An eSIM card is built into the device during manufacturing and works similarly to a physical SIM card. However, rather than being a removable chip, it’s a small chip that is soldered directly onto the device’s motherboard. When you activate an eSIM card, a digital profile is downloaded and installed on your device, which includes information about your phone number, network plan, and other details. This profile can then be used to authenticate the device on a mobile network, allowing it to access services like voice calls, messaging, and data connectivity.


  • Built-in during manufacturing
  • Digital profile downloaded and installed
  • Authentication of device for mobile network

Activation process of an eSIM card

The activation process of an eSIM card varies depending on the provider, but here are some general steps you can expect:

  1. Check for compatibility: Not all devices support eSIM technology, so make sure your device is compatible.
  1. Choose a plan: You’ll need to choose an eSIM plan from a provider that supports eSIM technology. The provider will give you a QR code to scan or manually enter the eSIM settings.
  1. Download the profile: Once you have the QR code or manual settings, you can download the eSIM profile to your device.
  1. Install the profile: Follow the instructions provided by your device manufacturer to install the eSIM profile.
  1. Activate the eSIM: Once the profile is installed, you’ll need to activate the eSIM using the instructions provided by your provider.


  • Check for compatibility
  • Choose a plan and get QR code or manual settings
  • Download and install the profile
  • Activate the eSIM

Compatibility with different devices and networks

eSIM technology is mostly compatible with newer smartphones and tablets, including Apple iPhones (starting from iPhone XS), Google Pixel phones, Samsung Galaxy phones (starting from S20), and some Windows PCs. However, not all devices support eSIM technology, and compatibility may vary based on your location or mobile provider.

In terms of network compatibility, eSIM technology is supported by many mobile providers worldwide, but not everyone offers it. Additionally, not all mobile providers offer the same level of service to eSIM users as they do for traditional SIM card users.


  • Mostly compatible with newer smartphones and tablets
  • Not all devices support eSIM technology
  • Network compatibility varies by location and provider

Security features of an eSIM card

eSIM cards have several security features built-in to protect user data:

  1. Encryption: All data transmitted through an eSIM card is encrypted, making it difficult for hackers to intercept or steal information.
  1. Remote disabling: In the event that a device is lost or stolen, the eSIM can be remotely disabled to prevent unauthorized access3. Physical security: Since eSIM cards are built into the device, there’s no physical SIM card that could be lost or stolen, reducing the risk of unauthorized access.
  1. Secure element: eSIM cards have a secure element, which is a tamper-resistant chip that stores user data and authentication information. This makes it difficult for attackers to compromise the card.


  • Encryption
  • Remote disabling
  • Physical security
  • Secure element

Comparison between eSIM and Physical SIM cards

Here are some key differences between eSIM and Physical SIM cards:

  1. Flexibility: eSIMs offer more flexibility as they can be activated remotely and used with multiple network plans simultaneously. Physical SIM cards need to be physically inserted and removed from the device.
  1. Cost: eSIM technology requires a compatible device, which can be more expensive than devices that only support physical SIM cards. Additionally, purchasing a new eSIM plan may also be more expensive than traditional plans.
  1. Availability: While eSIM technology is becoming increasingly popular, not all mobile providers or countries support it yet.
  1. Security: eSIM cards offer better security features, such as encryption and remote disabling, than physical SIM cards.
  1. Compatibility: Not all devices support eSIM technology, meaning you may not be able to use an eSIM if your device does not support it.


  • Flexibility
  • Cost
  • Availability
  • Security
  • Compatibility

Cost differences between eSIM and Physical SIM cards

In terms of cost, eSIM plans may be more expensive than traditional physical SIM card plans, though this may not always be the case. Additionally, the cost of eSIM-compatible devices may be higher than those that only support physical SIM cards. However, eSIM technology offers more flexibility in terms of switching between plans and networks, potentially saving users money in the long run.


  • eSIM plans may be more expensive than physical SIM card plans
  • eSIM-compatible devices may be more expensive

Future of eSIM technology and its impact on the industry

As eSIM technology becomes more popular, it’s expected that more mobile providers will start offering eSIM plans. Additionally, more device manufacturers are likely to support eSIM technology in their products. This could lead to a shift away from traditional physical SIM cards and towards eSIMs as the primary form of SIM card technology.

In terms of the impact on the industry, eSIM technology could make it easier for users to switch between different mobile providers and plans, potentially increasing competition and driving down prices. It could also pave the way for new use cases such as embedded wearable devices and connected cars.


  • Expected increase in popularity of eSIM technology
  • Potential shift away from physical SIM cards
  • Increased competition and potential price reductions
  • New use cases for eSIM technology


eSIM technology offers several advantages over physical SIM cards, such as flexibility, convenience, and better security features. However, there are also some downsides to consider, including limited compatibility, cost, and availability. As eSIM technology continues to grow in popularity, it’s likely that more mobile providers and device manufacturers will support it, leading to increased competition and potentially lower prices. Overall, eSIM technology represents an exciting advancement in mobile technology with the potential to transform how we connect and communicate.