Many people (due to their duties or to international travel) have to overpay for mobile communications due to roaming. Exceptionally long trips abroad will be unprofitable in this regard. Local operators charge inflated fees for providing a mobile network and Internet. It can be avoided by using a built-in eSIM card, which allows you to refuse mobile roaming. What is an eSIM card? If we compare the built-in calling card with a traditional one, which fits into a smartphone slot, we can highlight several significant differences: the eSIM card is not inserted into the gadget slot; it is initially soldered in; it does not need to be changed when changing the mobile number (or operator); such a SIM card can support up to 5 numbers (in iPhones, more than 8); if the gadget is stolen, it will not be possible to remove such a card and use it; the built-in card can connect to and store classic SIM card data. The principle of operation of the local card is as follows: it can receive and save all mobile data from a traditional SIM card. And if necessary, remove them. It is ensured by its memory, microprocessor, controllers, and mini-operating system. That is, an eSIM card is a unique technical device, thanks to which mobile communication is carried out over several numbers, all data usage is stored, and the Internet is available. Consequently, cellular devices that have a built-in card will allow you to feel as comfortable as possible, regardless of your location and your mobile operator. Data roaming All mobile network operators have individual geographic coverage. Therefore, once outside their range, the subscriber falls under the actions and rules of mobile operators of another country where he is. You must enable the “Internet roaming” function in the phone settings. It will cost much more. Operators of the country where the subscriber will be located must use and connect mobile data, which must already be routed through their local network. Alternatively, you can use Wi-Fi, but this may not always be possible. But all this can be avoided with a global eSIM card. Thanks to it, you can add the number of your local mobile operator and pay only for specific data plans. Thus, using the mobile data of a traditional SIM card while roaming may be optional. eSIM activation and its benefits First, you must have a smartphone (or iPhone) that supports the built-in card. Then, by going to the eSimsData website, you need to select the country where you are located or plan to leave, decide on the operator’s tariff plan, and select a number. After paying for eSIM, you will receive a QR code or link, following which the card will be activated. Considering the technical and functional capabilities of eSIM, subscribers will receive many of the following benefits: Refuse mobile roaming; Can use Messenger, Email, and Voice calls; Do not overpay operators of another country; Use many numbers; Do not regularly rearrange SIM cards in the gadget slot; Always be in touch and have access to the Internet. Therefore, having a built-in card makes you feel much more comfortable and not spend extra money on mobile roaming. At any time (in advance or already while traveling abroad), you can use eSIM activation and get many advantages compared to traditional SIM cards.