The transition to an electronic SIM card is a global trend in the world of mobile communications, which has finally fully reached all segments of the Android smartphone market. Technology eSIM (embedded SIM) allows you to abandon physical plastic cards, freeing up space in the internal space of the gadget and simplifying the process of changing operators. Instead of searching for a paperclip to remove the tray, you can activate your data plan in minutes right from home.
However, despite the obvious advantages, the setup process often raises questions among users. Differences in shell interfaces from different manufacturers, such as One UI from Samsung, MIUI from Xiaomi or pure Android from Google Pixel, can be confusing. In this article, we will look in detail at how to correctly install an eSIM profile, what pitfalls exist and how to avoid mistakes when scanning a QR code.
Before you start setting up, make sure that your smartphone technically supports working with virtual cards. Not all budget models have a built-in eSIM chip, even if they are relatively new. Checking compatibility is the first and most critical step that will save you time and nerves in the future.
Checking device and operator compatibility
First of all, you need to verify the presence of an eSIM module in your device. This can be done through the system settings or using a special USSD command. On most modern devices, it is enough to enter the code *#06# in the Phone application. If you see a number IMEI 2 or a specific code EID (Embedded Identity Document) in the list of identifiers, then your device is ready for use.
You should also make sure that your mobile operator provides an eSIM activation service. Large federal operators have already implemented this technology, but regional providers may still require a visit to a telecom store to issue a plastic carrier. Tariff conditions when using eSIM are usually no different from standard SIM cards.
⚠️ Attention: Some smartphones purchased in other regions (for example, in China or Hong Kong) may have physical support for two SIM cards, but be completely devoid of the eSIM module. Always check the specifications of a specific model before purchasing.
The list of popular devices supporting the technology is constantly expanding. Below is a table with the main series of smartphones where the function is guaranteed to work:
| Brand | Device series | Support features |
|---|---|---|
| Pixel 3 and later | Full support, easy activation from the menu | |
| Samsung | Galaxy S20, S21, S22, S23, S24, Z Fold/Flip | Support in global versions, region check |
| Xiaomi | Mi 10 and later, Redmi Note 12/13 Pro+ | Depends on the specific modification for the market |
| Motorola | Razr, Edge series | Stable operation in flagship models |
Preparation for profile activation
After After confirming compatibility, the next step is to receive activation data from your telecom operator. In most cases you will be provided QR code, which contains encrypted profile information. This code can be sent by email, displayed in your personal account on the operator’s website, or issued in a communication store on paper.
It is extremely important to ensure a stable connection to the Wi-Fi network before starting the procedure. The eSIM profile loading process requires communication with the operator's server, and losing the connection in the middle of the process may result in an activation error or profile corruption. It is not recommended to use mobile data if the device does not yet have an active SIM card.
☑️ Ready to install eSIM
If you plan to use eSIM in roaming or as a second line, decide in advance which slot will be the main one for data transfer. In the Android settings, you can flexibly manage the priority of networks, assigning one card for calls, and the other exclusively for the Internet.
Take a screenshot or photo of the QR code immediately after receiving it. Many operators allow you to use the code only once, and in case of a scanning error, it can be difficult to restore it without contacting support.
Automatic installation via QR code
The most common and convenient way of setting up is scanning a QR code through the system menu. The interface may differ slightly depending on the version of Android and the manufacturer's shell, but the general algorithm of actions remains the same. You need to go to the settings section responsible for connections.
On devices with pure Android, the path usually looks like this: Settings → Network and Internet → Mobile network → Add tariff plan. In Samsung smartphones, the menu is located at Settings → Connections → SIM card manager → Add tariff plan. After opening the corresponding section, the system will ask for permission to use the camera.
Point the camera at the QR code provided by the operator. Make sure the code is completely framed and well lit. The system will automatically read the data and begin loading the profile. This process may take from a few seconds to a couple of minutes depending on the Internet speed.
During installation, the system may ask you to confirm activation or enter a PIN code if the operator has installed additional security measures. Once downloaded successfully, you will be prompted to name your new profile (such as Work or Travel) and select usage preferences for calls and SMS.
⚠️ Attention: Do not point the camera at the screen of another device to scan, if possible. Pixel flickering and glare often interfere with code reading. It is best to use a printed version or a second screen with maximum brightness.
Manually setting network parameters
In rare cases, automatic scanning may not work due to damaged code or problems with the camera. Then manual setting of parameters comes to the rescue. To do this, you will need data that the operator must provide along with the QR code: address SM-DP+ (Server Address) and activation code.
In the menu for adding a tariff plan, select the option “Enter activation code manually” or similar. A form will open where you need to enter the received data. Be extremely careful when entering characters: server addresses often contain complex combinations of letters and numbers, where mistakes can easily be made.
Example of data format for manual entry:
SM-DP+: smdp.operator-domain.com
Activation code: ABCD-1234-EFGH-5678
After entering the data, click the "Add" button or "Connect." The device will contact the specified server and download the profile. If the system displays a connection error, check that the server address is spelled correctly and make sure that your Wi-Fi is not blocking the connection to the operator’s domain.
What to do if manual configuration does not help?
If manually entering data is unsuccessful, the profile may have already been activated on another device or the code may have expired. In this case, the only way out is to request the operator to generate a new QR code or new activation data. Old data cannot be reused.
Managing multiple eSIM profiles
One of the main advantages of the technology is the ability to store multiple profiles on one device. Although you can usually only have one or two profiles active at a time (depending on the smartphone model), you can store up to 5-8 different data plans in memory. This is ideal for frequent travelers or those who separate personal and work lives.
Switching between profiles is done in the SIM card management menu. You can temporarily disable unnecessary profiles so as not to receive notifications and calls from certain numbers, and enable them back as needed. Renaming profiles helps you quickly navigate the list, especially if you have tariffs connected to different countries.
- 🌍 Roaming: Buy local eSIM tariffs before your trip and activate them upon arrival without changing your physical card.
- 💼 Work and personal: Store two profiles at the same time, assigning different ringtones or notification settings for each.
- 🔄 Testing: Temporarily connect tariffs of other operators to check the quality of communication in your area.
When deleting a profile, remember that this process is irreversible without the participation of the operator. If you accidentally delete eSIM from your phone settings, you cannot restore it with a simple click of a button - you will need a new activation code.
Storing multiple profiles does not increase the subscription fee. You pay only for those tariffs that are active and topped up, and switching between them in the phone settings is free.
Solving common problems
Despite the technology being mature, users sometimes encounter difficulties. One of the common problems is the message “Failed to load profile.” Most often this is due to an unstable Internet connection or incorrect operation of the provider's DNS servers. Try switching to another Wi-Fi network or using a mobile hotspot from another phone.
Another situation is that the phone sees the eSIM, but does not register with the network. In this case, check the settings APN (access points). Sometimes they are not registered automatically. Go to the mobile network settings for your specific eSIM profile and make sure that the access point settings meet the requirements of your operator. They can be found on the provider's official website.
⚠️ Attention: If you reset your phone to factory settings, eSIM profiles may be deleted depending on the reset option you choose. Always check this point before formatting the device so as not to lose access to the number.
In some cases, the problem lies in blocking by the operator. If you change your device too often in a short period, your operator's security system may temporarily block the ability to activate a new eSIM. This issue can only be resolved through the provider's support service.
Frequently asked questions (FAQ)
Is it possible to transfer an existing number to an eSIM?
Yes, most operators allow you to transfer your current number from a physical SIM card to an eSIM. To do this, you usually need to visit a phone shop with a passport or fill out an application through the operator’s application if the self-issue function is available. The old plastic card will be deactivated.
What will happen to the eSIM if I unlock the bootloader?
On many devices, especially from Samsung and Google, unlocking the bootloader leads to the complete removal of all eSIM profiles for security purposes. The protection mechanism works automatically, and it will not be possible to restore profiles without new activation codes.
How much does an eSIM profile weigh and does it take up a lot of space?
The eSIM profile takes up negligible space in the internal memory of the smartphone (usually a few kilobytes). It does not affect the speed of the device or the available space for photos or applications. You can store dozens of profiles without compromising performance.
Does eSIM work if the phone is turned off?
No, like a regular SIM card, eSIM requires power from the host device to work. However, some modern smartphones support a backup power function for the security chip, allowing you to use transport cards or access keys even when the battery is completely discharged, but voice communication is not possible when the phone is turned off.
Is it possible to use eSIM and physical SIM at the same time?
Yes, this is the standard operating mode for most modern smartphones. You can receive calls to both numbers simultaneously or set up call forwarding. Dual SIM Dual Standby (DSDS) mode allows you to keep both lines active while waiting for a call.