What is an eSIM? Everything You Need To Know About eSIM.

From mini to micro to nano, phone SIM cards have been diminishing in size. The humble SIM card has made due for a long time, yet it presently, at last, seems as though it’s en route out. In this post, you are going to know all about eSIM like, what is eSIM, how it works, what are the advantages of using eSIM and phones supporting eSIM.

What is an eSIM?

As the name suggests, an eSIM is an electronic chip version of a SIM card-those tiny pieces of plastic that you insert into a mobile phone so you can connect to a network and use a number. Rather than take the form of a physical item, however, the eSIM is embedded in a chip inside the handset.

How does eSIM work?

A standard SIM (short for Subscriber Identify Module) stores an International Mobile Subscriber Identify (IMSI) number that identifies every user on a cellular network. It also saves the authentication key that validates the IMSI and can store contact names and numbers. While eSIMs still identify your user login credentials on a network, they also have the capability for that data to be rewritten over the air.

What are the advantages of an eSIM?

When you have an eSIM in your phone, you can switch between mobile networks with ease. There is no need to obtain a physical SIM card for the new provider because it’s simply a case of opening an account and allowing the carrier to reprogram the eSIM with the necessary data. This should eliminate the hassle of switching and make it a more fluid process. There are no demands for PAC numbers and the move should be instant. Any updates to the eSIM can also be completed remotely by the network.

How secure eSIMs is?

When you want to switch to another network using an eSIM, everything on the chip is changed to work with the new carrier, including the network authentication keys. The level of security is on a par with SIM cards, according to GSMA, the association of mobile networks. In a white paper, it said: “eSIM provides an equivalent level of security as the removable SIM card”.

Which phones are supporting eSIMs now?

Aside from Apple’s iPhone, Google has placed dual-eSIM/SIM capabilities in Pixel 2, 3, XL, 4, and 4 XL phones, while Samsung’s Galaxy Fold allows for an eSIM and a physical micro-SIM card. It won’t be long before more manufacturers climb aboard and we can expect to see a growing number of eSIM-compatible handsets over the coming months and years.

So, this is brief information about eSIM which can help you know about eSIM well. Tell me what do you think about the eSIM card in the comment section below?