You can activate a cellular plan with your carrier using an eSIM, an industry-standard digital SIM, without using a physical SIM. On an iPhone, eight or more eSIMs can be installed, and two phone numbers can be used simultaneously.
The size decrease is the key advantage. The eSIM is smaller than the Nano-SIM, which can be difficult to insert into some smartphones. a threefold reduction. This eliminates one of the entrances for water and dust and frees up space within your phone for things like a larger camera module or battery.
An actual card that you insert into your phone is a SIM card. The Mini-SIM, Micro-SIM, and lastly Nano-SIM, which is currently the industry standard for these physical chips, were all developed in 1991.
Normally, they slide into a tray that extends from the side of your phone.
The main advantage of a SIM card is its portability. You won’t need to call your carrier to swap between devices; you can do it in a matter of seconds. The tray’s drawback is that it takes up room inside a smartphone.
Every millimetre of additional space is valuable given the amount of technology crammed into the svelte smartphones of today and the competition to provide the biggest and sharpest cameras.
What is the difference between eSIM and physical SIM?
A physical SIM card and an eSIM are fundamentally different from one another in that a physical SIM card may be removed from one phone and inserted into another whereas an eSIM is “embedded” in the phone and cannot be removed.