Many travelers need to pay more for mobile communications while roaming. But you can refuse to overpay your mobile operator at any time. All you need to do is activate the eSIM card and save money. It can be done either in advance before going abroad or while already traveling. General information about eSIM cards For those who need to use dual SIM cards from mobile operators, a digital SIM card will be the best option. This card does not need to be changed when changing the operator or number; it cannot be lost or removed from the phone slot. The thing is that this is an embedded SIM card directly into the smartphone board. And the place can be used to expand the phone’s memory. It is much smaller than a nano phone card, allowing you to increase the space inside the gadget. In recent years, the Apple company has been actively introducing eSIM into its iPhones, thereby being one of the first to enter the global market for the distribution of gadgets with eSIM. Mobile devices with eSIM If your smartphone supports a built-in calling card, then you can transfer a phone number (or numbers) with the necessary data that will be located in a traditional SIM card to it. But activation must first go through – this can be done independently, using the instructions, or by contacting your mobile operator (by scanning the QR code or following the received link to your email address). Thanks to the functionality of the built-in card, remote provisioning of the SIM card can be performed. It is very convenient if you need to reconfigure calling cards at any time, regardless of location. The principle of operation of eSIM is similar to the direction of operation of bank cards. They store a certain amount of information and data, which can be retrieved and used for services if necessary. The built-in card has the following characteristics: operates thanks to a microprocessor; has its memory for recording data; it has its own (albeit relatively simple) operating system. This technical equipment lets you transfer all data from a classic phone card. In addition, eSIM can operate with five mobile numbers (for an iPhone – from eight). Switching between numbers is fast and provides excellent compatibility with so many numbers. Cellular devices that support eSIM will allow you to always be connected and connected to the Internet. How is the built-in card activated? It’s no secret that mobile network operators have a particular coverage area. Therefore, when you travel abroad (outside the range of your mobile operator), you have to pay extra for roaming. The presence of a built-in card eliminates overpayment. It is enough to connect to a local telecom operator and pay only for the local data plans. One option for using the built-in card is to visit the eSimsData website and purchase a local eSIM online. But first, you need to make sure that your gadget supports this technology. After visiting the site, you will select your mobile operator, number, and tariff plan. Please also indicate your email. Payment can be made in fiat funds or cryptocurrency. For the card to be activated, you must follow the link on the screen (it will also be sent to your email) or scan the QR code. Using built-in calling cards, you can have several numbers, always be in touch, and not overpay for roaming.