eSIM, which is short for the term “Embedded SIM”, refers to the digital SIM card technology that is embedded in phones instead of a physical SIM card. This system, which does not require a physical SIM card, provides many advantages to users. First of all, when using eSIM, it is not necessary to change the SIM card to use different numbers. You can choose the plan you want to be active on your phone without having to insert a new SIM card, especially during international travels.