eSIM: What it is, how it works, how to connect and use a virtual SIM card

Contents:

• What is eSIM and how does it work?
• What are the advantages of eSIM?
• How to connect eSIM to your smartphone
• What else you should know before connecting?
• What are the advantages of eSIM?
• How to connect eSIM to your smartphone
• What else you should know before connecting?
• How to connect eSIM to your smartphone
• What else you should know before connecting?
• What else should you know before connecting

Modern devices are increasingly abandoning the traditional SIM card slot in favor of eSIM technology. In this article, we will look at what eSIM is, its main advantages, and how it differs from a regular SIM card. You will learn how to connect an eSIM, which is especially relevant for those already familiar with this technology and want to deepen their knowledge.

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• What is eSIM and how does it work?
• What are its advantages?
• How to connect eSIM to a smartphone?
• What else is important to know before connecting?

What is eSIM and how does it work?

An eSIM is a compact microchip that is integrated into a device during its production. This means that a separate slot or plastic case is not required to perform functions similar to a regular SIM card. The eSIM stores information about your number, connects the device to the operator's network, and provides full functionality for calls, SMS, and mobile Internet. Innovative eSIM technology provides ease of use and increases connection reliability, allowing users to easily switch between operators without having to physically change the SIM card.

To connect to an eSIM, your operator must provide a profile that is downloaded to the device's chip over the internet. This is usually done via a QR code or a dedicated app. This profile contains the necessary settings to automatically connect your device to the selected network. In the next section of this article, we will explain in detail how to complete this process correctly.

The first SIM cards were introduced in the early 1990s and were comparable in size to a bank card. Over time, SIM card sizes have significantly decreased, driven by advances in technology and user needs. Modern SIM cards have become even more compact and convenient, allowing them to be used in a variety of devices, such as smartphones, tablets, and wearables. The evolution of SIM cards reflects the general trend toward simplifying and improving the user experience in mobile communications.

• Mini-SIM (2FF) — 25 × 15 mm, about the size of a postage stamp. It was used in push-button phones, such as the Nokia 3310.
• Micro-SIM (3FF) — 15 × 12 mm, like a key on a computer keyboard. It became widespread after the release of the iPhone 4 in 2010 and became the standard for many smartphones of that time.
• Nano-SIM (4FF) — 12.3 × 8.8 mm, about the size of the tip of your little finger. This is a practically bare chip without a plastic backing, which is found in most modern smartphones. And it is the most compact physical SIM card, not counting eSIM.

eSIM was first introduced in 2016 as a technology focused on the Internet of Things. Initially, it was planned to be used in smart water meters and GPS trackers for tracking goods over long distances. However, it soon became clear that eSIM is also ideal for smartphones, tablets, and other consumer devices. This technology provides more flexible connectivity options, simplifies the process of activation and management of mobile plans, making it attractive to users and telecom operators. As a result, eSIM is gradually gaining popularity in the mobile device market, opening new horizons for the development of communications technologies.

The mass adoption of eSIM began in 2018 with the release of the iPhone XS series from Apple. This model gave users the option of using a nano-SIM in combination with an eSIM, which became a convenient solution for separating personal and work numbers on a single device. In Russia, eSIM technology began to be actively implemented in 2020. The first company to support it was Tele2, which was soon followed by other major telecom operators. eSIM opens up new possibilities for users, allowing them to easily switch between operators and manage multiple numbers without having to change physical SIM cards.

What are the benefits of eSIM?

In the next ten years, we expect eSIMs to completely replace physical SIM cards in most countries. Let's look at three main reasons driving this process. First, eSIMs offer convenience and ease of use, allowing users to easily switch between operators and tariffs without having to replace the physical card. Second, they provide more secure data storage, minimizing the risk of SIM card loss or theft. Third, the introduction of eSIMs promotes a more environmentally friendly approach by reducing the amount of plastic waste associated with the production of traditional SIM cards. These factors make eSIMs an attractive choice for both users and telecom operators.

Data security is an important aspect of modern technology. An eSIM, or embedded SIM card, is a microchip integrated into a device and soldered to the motherboard. Unlike a traditional plastic SIM card, an eSIM cannot be accidentally lost or replaced without specialized equipment, significantly increasing security. This technology securely stores user data and prevents unauthorized access, making eSIM the preferred choice for protecting personal information. Imagine this: an intruder steals a smartphone. Even if the device is protected by a password or fingerprint scanner, the criminal can remove the SIM card and insert it into another phone. This gives them access to all accounts that use SMS for login confirmation, including banking apps. Protecting personal data and finances has become a critical issue in today's environment. Users should consider additional authentication methods, such as two-factor authentication, to minimize the risk of information leakage. Using an eSIM has its own unique challenges, as this type of SIM card cannot be removed. If you need to change or transfer your number to another device, you will need to go through additional authorization through your personal account and confirm your identity. This makes the number management process more secure, but also more complex compared to traditional SIM cards.

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Identification, authentication, and authorization are key concepts in information security. These processes play a vital role in protecting data and managing access to systems.

Identification is the process by which a user presents their identity to the system. This can be done using a login, username, or other unique identifier. The main purpose of identification is to enable the system to recognize who is attempting to access it.

Authentication is the next step after identification. It involves verifying the validity of the data provided. The user confirms their identity using a password, biometric data, or other methods. Authentication ensures that the user is who they claim to be.

Authorization is the process that determines what actions the user can perform in the system after successful authentication. Authorization establishes access rights and determines which resources are available to the user.

Thus, identification, authentication, and authorization are interrelated processes that ensure security and data protection in the digital space. It is important to understand their differences and interrelationships for effective access management and information protection.

Removing the physical SIM card slot saves space inside the smartphone. This freed-up space can be used by manufacturers to improve other important device components, such as the battery, processor, or cooling system. As a result, modern smartphones are becoming more powerful and efficient, offering users better specifications and performance.

This advantage may seem insignificant today, but over time, it will become a key factor in improving the performance of gadgets. Engineers can use the freed-up space to increase battery capacity, install more powerful and energy-efficient processors, and add new sensors. In addition, smartphones without a SIM card slot are easier to protect from dust and moisture, significantly increasing their durability and reliability. These changes contribute to the creation of more compact and powerful devices that meet modern user demands. Flexible operator management using eSIM in modern devices allows you to store multiple mobile operator profiles, typically five to ten. One or two profiles can be active at a time, and switching between them occurs in just a few seconds and does not require a device reboot. This makes eSIM a convenient solution for users who want to easily manage their plans and use services from different operators without having to physically swap SIM cards. Quickly switching between profiles is a convenient solution for travelers. At home, you can use your main plan, and then easily connect to a local operator profile abroad. This flexibility is also useful in everyday life. If your operator increases rates or degrades service quality, you can quickly switch to another provider. This allows you to optimize costs and guarantee a stable connection in any conditions.

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Find out the Wi-Fi password: available methods

There are several ways to access your Wi-Fi network password. One of the easiest ways is to look at the sticker on your router. Many devices have a default password listed on the back or bottom.

If you're already connected to the network, you can find the password through the device's settings. On Windows computers, open the Network and Sharing Center, select your network, and open Wireless Network Properties. In the Security section, you can display the password by checking the box next to "Show characters as you type."

For MacOS users, the process is similar: open the Keychain Utility and find your network, after which you can view the password by entering your system password.

If you can't access your router or don't remember the password, you can reset the device to factory settings. However, it's worth remembering that this will erase all current network settings.

Use these methods to easily find out your Wi-Fi password and ensure a stable internet connection.

How to connect eSIM on a smartphone

Connecting a virtual SIM card is quick, taking just a few minutes. For a successful connection, your smartphone must support eSIM technology, have access to Wi-Fi, and be offered by a carrier. A virtual SIM card allows you to easily manage your mobile connection, eliminating the need to use physical SIM cards. This solution is becoming increasingly popular due to its convenience and simplicity.

In this article, we will cover the connection process in detail using the iPhone as an example. However, the general steps will be similar for Android smartphones, tablets, smartwatches, and other devices. The names of the sections in the settings or app interface may differ slightly, but the connection process remains the same. Go to the "Settings" section of your device. For iPhone users, select "Cellular," and for Android users, select "SIM Manager." In this menu, look for the "Add Cellular Plan" or "Add eSIM" option, which is usually located at the top of the screen, under the current SIM card information. If this feature is available, your device supports eSIM.

We will not recommend a specific carrier. It is best to compare tariff plans and choose the most suitable option for yourself. Please note that the eSIM compatibility check is available on the official websites of carriers. You can select your device from the list and find out if it supports this technology.

When registering for an eSIM at your operator's office, a qualified employee will provide all the necessary information and help you set up the device on the spot. If you prefer to activate your eSIM online, simply log in to your operator's app or website, select the "Get eSIM" option or a similar one, and enter your phone number. This process ensures quick and convenient activation, allowing you to easily and effortlessly switch to eSIM.

Once the process is complete, you will receive a QR code or unique link to activate your eSIM. We recommend opening this code or link on a computer, tablet, or other smartphone other than the one you are setting up your eSIM on. This will allow you to easily scan the code with the camera of your main gadget, ensuring quick and convenient activation.

To add an eSIM to On your smartphone, open Settings and go to "Cellular" or "SIM Manager." Select "Add eSIM" or "Scan QR code." Then point the camera at the QR code you received, and your device will automatically recognize it, downloading your carrier profile.

In some situations, your carrier may request a PIN or verification code. Follow the on-screen instructions. eSIM activation typically takes 1 to 3 minutes, after which your device will successfully connect to the network.

Once your eSIM is connected, you need to decide how you want to use it: for mobile data only, as a primary number for all services, or as an additional number, for example, for work calls. If your device already has a physical SIM card installed, the system will prompt you to select which card will be used by default. Don't worry about the settings: they can be easily changed at any time.

What else should you know before connecting?

While preparing this material, we encountered many recurring questions from users interested in connecting an eSIM. In this text, we will answer the most common ones to help you better understand this process and its benefits. Connecting an eSIM provides users with flexibility and convenience, allowing you to easily switch between operators and manage multiple numbers on one device. If you have additional questions, do not hesitate to ask for help.

Modern devices with eSIM support, such as the iPhone and Samsung Galaxy, typically operate in Dual SIM mode, which allows you to use two SIM cards simultaneously. This is convenient, for example, when you install a physical SIM card from a Russian operator and an eSIM from a foreign operator for travel. In the device settings, you can easily select which SIM card will be used for calls, mobile Internet, or sending SMS. This functionality provides flexibility and convenience, allowing users to optimally manage their plans and communication services.

The eSIM profile is not transferred automatically, as it is linked to a specific device. However, most operators offer the option to reissue the profile. To do this, you must request a new QR code or use the transfer function through your personal account, if this option is available. For example, MTS users can reissue their eSIM directly in the My MTS app.

Transferring an eSIM to a new device is similar to the initial installation. To do this, you must delete the old eSIM profile and then activate the new one. For example, if you are replacing an iPhone X with an iPhone 15, you will need to reissue a QR code from your carrier and activate the eSIM on the new device. While this process may seem less convenient than using a physical SIM card, it offers a higher level of security, as it eliminates the possibility of unauthorized access to your SIM card.

The first drawback, which we mentioned earlier, is the difficulty of transferring an eSIM profile between devices. The second important aspect is the limited support for this technology. Despite the growing popularity of eSIM, many devices, especially in the mid-price segment, are not equipped with an eUICC module and, therefore, can only use physical SIM cards. This limits user options and slows the transition to more modern mobile solutions.

The third aspect worth considering is that not all mobile operators support eSIM technology. Even in large countries, this option may only be available from certain providers, often with various restrictions. For example, some companies may charge an additional fee for eSIM activation or offer less favorable conditions, such as the lack of certain roaming features. In such cases, using a regular SIM card may be a simpler and more cost-effective solution.

Your device settings allow you to temporarily disable the eSIM profile or delete it completely. This feature can be useful if you no longer plan to use the number or are planning to switch to a different carrier.

On your iPhone, go to Settings, then select Cellular. Find the desired plan, then tap "Turn Off Cellular Plan" to deactivate it, or select "Remove Cellular Plan" to completely delete the profile.

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• What is a QR code, why is it needed and how does it work?
• What is Bluetooth and how does it work?
• What is Wi-Fi: explained in simple terms?

What are the advantages of eSIM?

In the next ten years, eSIMs are expected to completely replace physical SIM cards in most countries. Let's look at three main reasons driving this trend. First, eSIMs provide greater flexibility, allowing users to easily switch between operators without having to change the physical card. Second, they take up less space in devices, allowing manufacturers to create more compact and functional gadgets. Third, eSIMs contribute to improved security, as they are more difficult to counterfeit or steal compared to traditional SIM cards. Thus, the transition to eSIM represents a significant step in the development of mobile communications and technology.

Data security is a crucial aspect in the modern world, especially when using eSIM. An eSIM, or embedded SIM card, is a physical microchip that is integrated into a device and soldered to the motherboard. Unlike traditional plastic SIM cards, eSIMs cannot be lost or replaced without specialized equipment, significantly increasing security. This technology provides users with a reliable solution for connecting to mobile networks, minimizing the risks associated with the vulnerabilities of traditional SIM cards. eSIM also simplifies the process of activating and managing mobile services, making it an attractive choice for users and telecom operators.

Imagine that an intruder steals a smartphone. Even if the device is protected by a password or fingerprint scanner, the criminal can remove the SIM card and insert it into another phone. This allows access to all accounts that use SMS for login confirmation, including banking apps. Such cases highlight the importance of reliably protecting your data and the need to use additional security measures, such as two-factor authentication and SIM card locking. Remember to regularly update passwords and monitor your account activity to minimize risks.

This is impossible with an eSIM, as the chip cannot be removed. Any changes or transfer of the number to another device will require additional authorization through your personal account and identity verification. This provides a higher level of security and protects users from unauthorized access to their number.

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Identification, authentication, and authorization are key processes in information security that are often confused with each other. Identification is the process of recognizing a user, during which the system determines who exactly is accessing resources. Authentication follows identification and is the verification of a user's identity, where the system confirms that the declared identity corresponds to the actual user. Authorization, on the other hand, is the process of granting access rights, which determines which resources or actions are available to a specific user after successful authentication. Understanding the differences between these concepts is important for ensuring data security and access management in information systems.

Removing the physical SIM card slot significantly saves space inside a smartphone. This freed-up space can be used by manufacturers to optimize other device components, such as the battery, processor, or cooling system. As a result, such smartphones can offer higher performance and improved specifications, making them more attractive to users.

This advantage may seem insignificant today, but in the future, it will significantly improve the performance of mobile devices. Engineers will use the freed-up space to increase battery capacity, install more powerful and energy-efficient processors, and add new sensors. In addition, smartphones without SIM card slots are more easily protected from dust and moisture, significantly increasing their durability and reliability.

Modern devices with eSIM support offer users convenient operator management. Thanks to this technology, it is possible to store five to ten profiles from different operators. One or two profiles can be active at a time, providing flexibility. Switching between profiles is instant and doesn't require a device reboot, making the process as convenient as possible for users. eSIM allows you to easily adapt to your needs, whether traveling abroad or choosing the optimal plan. Quickly switching between profiles is especially convenient when traveling. At home, you can use your main plan, and then connect to a local provider when abroad. This flexibility is also useful in everyday life. For example, if your provider increases rates or reduces service quality, you can quickly switch to a different provider. The ability to switch profiles provides not only convenience, but also significant savings on communication costs.

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How to Find Out Your Wi-Fi Password: Effective Methods

You may need a Wi-Fi password in various situations, whether connecting a new device or granting access to guests. There are several simple ways to find out the password for your wireless network.

The first method is to check on a device that is already connected to the network. On most operating systems, such as Windows, macOS, Android, and iOS, you can find saved passwords in the Wi-Fi settings. For example, on Windows, you need to open the Network and Sharing Center, select your network, and review the security settings.

If you have access to your router, you can find the password by logging into its interface. To do this, enter the router's IP address in the browser's address bar and enter your username and password. This information is usually found on a sticker on the device itself or in the instructions. In the router interface, find the section with wireless network settings, where the current password will be indicated.

You can also use special programs for recovering Wi-Fi passwords. Such utilities can find saved passwords on your device if it has previously connected to the network.

If you forgot the password and cannot access it, you may need to reset the router to factory settings. This step will result in the loss of all settings, so it should only be used as a last resort.

Knowing these methods, you can quickly and easily find your Wi-Fi password to stay connected and provide internet access to all your devices.

How to connect eSIM on a smartphone

Connecting a virtual SIM card is quick and takes only a few minutes. For a successful connection, your smartphone must support eSIM technology, have access to Wi-Fi, and be offered by your carrier. The convenience of using a virtual SIM card lies in its simplicity and quick activation, making it an attractive option for users seeking modern mobile solutions.

In this article, we'll cover the setup process in detail using an iPhone as an example. However, the basic steps are also similar for Android smartphones, tablets, smartwatches, and other devices. While the names of sections in settings and app interfaces may vary slightly, the process remains the same. This allows users to easily adapt to the necessary settings regardless of the device they're using.

Go to the "Settings" section of your device and select "Cellular" for iPhone or "SIM Manager" for Android. In this menu, find the "Add Cellular Plan" or "Add eSIM" option, which is typically located at the top of the screen, under information about the current SIM card. If this option is available, it confirms that your device supports eSIM technology.

We will not recommend a specific mobile operator. Instead, we recommend comparing plans and choosing the most suitable option for your needs. Please note that the eSIM support check function is available on the operators' websites. You can select your gadget from the list and get information about its compatibility with eSIM. This will help you make an informed choice and optimally use mobile services.

When registering an eSIM at your operator's office, a specialist will provide full information and help with setup on-site. If you prefer to activate your eSIM online, simply go to your operator's app or website. Find the "Register eSIM" option or similar and enter your phone number. This will allow you to quickly and conveniently activate your eSIM without having to visit an office.

Once the process is complete, you will receive a QR code or unique link to activate your eSIM. We recommend opening this QR code or link on a computer, tablet, or other smartphone other than the device on which you are setting up your eSIM. This will allow you to easily scan the code with the camera of your main device.

Go to your smartphone settings and select the "Cellular" section or "SIM Manager." Then tap "Add eSIM" or "Scan QR code." Point the camera at the QR code you received, and your smartphone will automatically recognize it, downloading your carrier profile. Make sure you have a stable internet connection to successfully complete the eSIM activation process.

Your carrier may request a PIN or verification code. Follow the on-screen instructions for successful activation. The eSIM activation process typically takes 1 to 3 minutes, after which your device will be connected to the network.

After connecting the eSIM, you need to decide how you plan to use it: for mobile data, as a primary number for all services, or as an additional number, such as for work calls. If your device already has a physical SIM card installed, the system will prompt you to select which card will be used by default. Don't worry about the settings: they can be easily changed at any time.

What else should you know before connecting?

While preparing this material, we came across many similar questions from users interested in connecting an eSIM. In this text, we will briefly answer the most common ones. Connecting an eSIM is becoming increasingly popular, and we are ready to help you understand this process.

Most modern devices that support eSIM function in Dual SIM mode, which allows you to use two SIM cards simultaneously. For example, on iPhone or Samsung Galaxy smartphones, you can install a physical SIM card from a Russian operator and activate an eSIM from a foreign operator for travel. In the device settings, you can choose which SIM card will be used for calls, mobile Internet, or sending SMS, which provides convenience and flexibility in using communications.

When you change devices, the eSIM profile is not automatically transferred, since it is associated with a specific gadget. However, most carriers offer the option to reissue a profile. To do this, simply request a new QR code or use the transfer function through your personal account, if available. For example, to reissue an eSIM with MTS, you can use the "My MTS" app. Transferring an eSIM to a new device is similar to initial setup. First, you need to delete the old profile, then activate the new one. For example, if you are upgrading from an iPhone X to an iPhone 15, you will need to re-request a QR code from your carrier and activate the eSIM on the new device. While this process may seem less convenient than using a physical SIM card, eSIM offers a higher level of security, as it eliminates the possibility of unauthorized access to your SIM card. The first drawback, which we mentioned earlier, is the difficulty of transferring an eSIM profile between devices. The second important aspect is the limited support of the technology. Despite the growing popularity of eSIM, many devices, especially in the mid-range segment, do not have an eUICC module and therefore can only work with physical SIM cards. This creates certain difficulties for users who want to take advantage of the benefits of eSIM, such as the ability to switch carriers without replacing the card and simplified plan management.

Not all mobile operators offer eSIM support. Even in large countries, this technology may only be available through certain providers, often with restrictions or less favorable terms. For example, connection may require additional fees or provide limited roaming features. In such cases, using a standard SIM card may be a simpler and more cost-effective solution.

In your device settings, you can temporarily disable the eSIM profile or remove it completely. This can be useful if you no longer plan to use this number or are planning to switch to a different carrier.

To disable or remove a cellular plan on iPhone, go to Settings, then select Cellular. Find the desired plan and click "Disable cellular plan" to deactivate it or "Delete cellular plan" to completely delete the profile. This process will allow you to manage your tariff plans and avoid unwanted charges.

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• What is a QR code, why is it needed and how does it work?
• What is Bluetooth and how does it work?
• What is Wi-Fi: explained in simple terms?

How to connect eSIM on a smartphone

Connecting a virtual SIM card takes only a few minutes. For successful activation, your smartphone must support this technology, have access to Wi-Fi, and your telecom operator must provide the appropriate service. A virtual SIM card allows you to conveniently manage your mobile network, eliminating the need for a physical SIM card and simplifying the setup process.

In this article, we'll cover the setup process in detail using an iPhone as an example, but the basic steps are also applicable to Android smartphones, tablets, smartwatches, and other devices. While the section names in settings or app interfaces may differ slightly, the general principle remains the same. This allows users across platforms to easily follow the instructions and successfully complete the setup process.

We will not recommend a specific operator, so it is best to compare tariffs and choose the most suitable option. However, it is worth noting that the operator websites have a function for checking eSIM support. You can select your gadget from the list and find out if it is compatible with this technology. This will allow you to make an informed choice and get the most out of eSIM.

If you decide to register for an eSIM at your mobile operator's office, a representative will provide the necessary information and help with setup on-site. If you prefer to activate your eSIM online, simply go to your operator's app or website. Find the "Register eSIM" service section or a similar one and enter your phone number. This will allow you to quickly and conveniently access the new features offered by eSIM without having to visit an office.

You will then receive a QR code or unique link to activate your eSIM. We recommend opening this information on a computer, tablet, or other smartphone, rather than on the device where you are configuring your eSIM. This will allow you to conveniently scan the QR code using the camera of your main device.

To add an eSIM to your smartphone, open settings and go to Go to the "Cellular" or "SIM Manager" section. Select "Add eSIM" or "Scan QR code." Then point the camera at the QR code you received, and your smartphone will automatically recognize it, loading your operator profile. This process allows you to quickly and conveniently activate your eSIM without the need for a physical SIM card, making your mobile experience more flexible and modern.

In some situations, your operator may request a PIN or verification code. Simply follow the on-screen instructions. Typically, eSIM activation takes 1 to 3 minutes, after which your device will successfully connect to the network.

Once your eSIM is connected, you need to decide how you plan to use it: exclusively for mobile data, as a primary number for all services, or as an additional number, for example, for work calls. If your device already has a physical SIM card installed, the system will prompt you to select which card will be used by default. Don't worry about the settings - they can be quickly changed at any time.

What else should you know before connecting?

While preparing this material, we encountered many frequently asked questions from users interested in connecting eSIM. In this text, we will provide concise answers to the most common ones.

Modern devices with eSIM support, such as the iPhone and Samsung Galaxy, usually operate in Dual SIM mode, which allows you to use two SIM cards simultaneously. This is convenient, for example, when users install a physical SIM card from a Russian telecom operator and an eSIM from a foreign operator for trips abroad. In the device settings, you can choose which SIM card will be used for calls, mobile Internet, or sending SMS. This allows you to optimally manage your communications and tariffs, which is especially useful for frequent travelers.

The eSIM profile is not transferred automatically, as it is associated with a specific device. However, most carriers offer the option to reissue a profile. To do this, you need to request a new QR code or use the transfer function through your personal account, if this option is available. For example, carriers like MTS allow you to reissue an eSIM directly in the My MTS app. This simplifies the process and allows you to quickly restore access to a mobile network on a new device. Transferring an eSIM to a new device is similar to the initial setup: first, you need to delete the old profile, then activate the new one. For example, when replacing an iPhone X with an iPhone 15, you will need to re-request a QR code from your carrier and activate the eSIM on the new device. This process may seem less convenient compared to a physical SIM card, but it provides a higher level of security, as it eliminates the possibility of unauthorized use of your SIM card. The first drawback, which we mentioned earlier, is the inconvenience of transferring an eSIM profile between devices. The second drawback is the limited support for eSIM technology. Despite the growing popularity of eSIM, many devices, especially in the mid-price segment, do not have an eUICC module and work exclusively with physical SIM cards. This limits user options and slows the transition to more modern communication technologies.

Third point: not all telecom operators support eSIM technology. Even in large countries, availability of this service may be limited to a few companies, and often with certain conditions, such as an additional connection fee or the lack of some roaming features. In some cases, using a regular SIM card may be a simpler and more cost-effective solution.

In your device settings, you have the option to temporarily disable the eSIM profile or completely delete it. This can be useful if you no longer plan to use this number or are planning to change carriers. Disabling or deleting the eSIM profile allows you to manage your mobile services and optimize your device use.

On iPhone, go to Settings, then select Cellular. Find the desired plan and select "Disable cellular plan" to deactivate it or "Delete cellular plan" to completely delete the profile. These steps will help you manage your cellular services and control your mobile phone costs.

Learn more about the world of programming and code in our Telegram channel. Subscribe to updates and stay up to date with the most interesting news, articles, and resources!

Explore additional materials:

• What is a QR code, why is it needed, and how does it work?
• What is Bluetooth and how does it work?
• What is Wi-Fi: explained in simple terms?

What else you should know before connecting?

While preparing this material, we encountered a number of frequently asked questions from users interested in connecting eSIM. In this article, we will provide brief and informative answers to the most common questions.

Most modern devices with eSIM support operate in Dual SIM mode, allowing you to use two SIM cards simultaneously. For example, iPhones and Samsung Galaxy smartphones can accommodate a physical SIM card from a Russian operator and an eSIM from a foreign operator for travel. In the device settings, you can choose which SIM card will be used for calls, mobile data, or sending SMS. This makes Dual SIM especially convenient for travelers and people who frequently move between countries.

When transferring an eSIM profile, the transfer does not occur automatically, as the profile is associated with a specific device. Most operators offer the option to reissue an eSIM profile. To do this, you must request a new QR code or use the transfer function through your personal account, if available. For example, to reissue an eSIM from MTS, you can use the My MTS app. Transferring an eSIM to a new device is similar to the initial installation: you need to delete the old profile and activate the new one. For example, if you're upgrading from an iPhone X to an iPhone 15, you'll need to re-request a QR code from your carrier and activate the eSIM on the new device. While this process may seem less convenient than using a physical SIM card, it offers greater security: your eSIM is protected from unauthorized use. The first drawback, which we mentioned earlier, is the inconvenience of transferring an eSIM profile between devices. The second significant drawback is the limited support for this technology. Despite the growing popularity of eSIM, many devices, especially in the mid-price segment, still lack an eUICC module and, therefore, can only use physical SIM cards. This creates certain difficulties for users who want to take advantage of the benefits of eSIM, such as the ease of switching between operators and the ability to store multiple profiles.

A third important aspect: not all mobile operators provide eSIM support. Even in large countries, this technology may be available only through certain companies and often with certain limitations, such as additional connection fees or the lack of some roaming features. In such cases, using a regular SIM card may be a simpler and more cost-effective solution.

In your device settings, you have the option to temporarily disable the eSIM profile or completely remove it. This is convenient if you no longer use the number or plan to change carriers. Removing or disabling the eSIM helps you manage your mobile connection and optimize your data plan usage.

To deactivate or remove a cellular plan on iPhone, go to Settings, then select Cellular. Find the plan you want and tap Turn Off Cellular Plan if you want to temporarily deactivate it, or select Remove Cellular Plan to completely remove the profile. This will allow you to manage your mobile settings and optimize your data usage.

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Read also:

• What is a QR code, why is it needed and how does it work?
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• What is Wi-Fi: explained in simple terms?

Learn more about the world of programming and coding in our Telegram channel. Subscribe and stay up to date with the latest news and interesting facts!

Read also:

• What is a QR code, why is it needed and how does it work?
• What is Bluetooth and how does it work?
• What is Wi-Fi: explained in simple terms?

Learn more about programming and modern technologies in our Telegram channel. Subscribe to stay up to date with interesting content and helpful tips!