With a calling card, a smartphone will be practically helpful. Most subscribers use dual SIM, but they may need more than this. Sometimes travelers have to change their phone number, operator, and therefore their card. And this is only occasionally convenient. General information about eSIM It would be more convenient and practical if mobile devices had one universal non-replaceable card, which would be enough. It is precisely what a digital SIM card is. It does not need to be installed in a smartphone slot – it is soldered inside the phone. This card allows you to activate the data plans of the selected operator without using a traditional embedded SIM card. Thanks to it, you can set up 8 or more built-in cards on your iPhone and use several numbers simultaneously. For the built-in local SIM card to be connected, you will need the following: iPhone XR or latest; Mobile network operators that support built-in cards; Internet connection. Please note that the newest iPhone models, which exclusively support the built-in digital card, can be activated without the Internet. Mobile data and the process of setting up a card on an iPhone To set up such a card on an iPhone, you need to turn on the purchased iPhone and follow the instructions on its screen. In the case where the operator can activate the built-in card or transfer data to it, its activation occurs during the process of setting up the iPhone. If the operator has activated a global card, then he assigns an eSIM to the iPhone during the purchase process. You can also transfer all the data from your SIM card to the built-in one (from an old iPhone to a purchased one and not request the operator). Some operators allow you to independently transfer a phone number from an existing iPhone to a purchased one. To do this, you must log in using your Apple ID on two iPhones. Ensure the previous iPhone is unlocked and located close to the turned-on Bluetooth. The iPhone must have iOS 16 or newer operating system. It is how remote preparation of a SIM card occurs. If you cannot transfer data to eSIM yourself, you need to call the operator. It can be done using a QR code or a particular application for the iPhone. How do you activate eSIM by contacting your operator? Some mobile operators assign a new built-in card to the iPhone. Then, the process of setting it up will be much faster. Typically, this would be the case if a consumer purchases an iPhone that already has a specific Apple carrier that has a cellular plan. But if the built-in card was assigned to the iPhone during its purchase, it must be turned on and follow the recommendations to activate the digital card. If you need to switch to iOS from Android, call your operator to activate eSIM and transfer your number and data to your iPhone. After setting up your iPhone and activating the eSIM, you must log into your cellular devices with the same Apple ID. They should be placed next to active Bluetooth. Then tap the message, “Tariff plan is ready for installation,” do the same in Settings, and click “Next.” Then, make a call to the iPhone to make sure that the connection is complete. In the end On the eSimsData website, you can purchase and activate an eSIM (for a smartphone that supports this function). And in just a few minutes, you can become the owner of several numbers simultaneously. Excellent compatibility and fast switching between numbers are ensured, and roaming will be cheaper.