In the recent announcements, Apple talked about including an eSIM in its next Watch 3. With eSIM, one can independently use the Watch as a phone i.e. you can use it without pairing with any other device. Even Google has been talking about it in its past events. So, what exactly is an eSIM and how is it different from the physical SIM cards that we have been using until now?
What is an eSIM?
The term “eSIM” relates to a new standard being promoted by the GSMA – the association that represents network operators worldwide. It is the electronic SIM card which will work exactly the same as your normal SIM card, but it is embedded in the device and cannot be removed.
So how does it work? Well, eSIM also known as eUICC (embedded Universal Circuit Card), is re-writable by all operators. You need not go anywhere if you want to switch your operator, just put a request and your SIM will be updated over the air. The hustle for getting a new SIM every time you want to change your carrier is finally over. Another benefit of the electronic SIM is its small size and it also helps device manufacturers in reducing the size of the device as well.
For, now switching phone is easy and you can easily pop out sim from one and put it on others. With eSIM, it can be a time-consuming process. It may take time in deregistration of SIM from older phone to registration on a new phone. Now think if you just want to change SIM card for few minutes to test something.
Apple Watch 3 uses the same number that you use on your iPhone. It shows the possibility of the same number on multiple devices at the same time. It can be possible that a hacker manages to clone your SIM and uses it simultaneously while you use your phone.
Now eSIMs have come into picture, and most carriers will start supporting it soon. It’s going to take some time to see them in the device you own. But when they become globally supported, we can expect devices to come just with eSIM and that time is not so far.