eSIM – definition


  • The embedded universal integrated circuit card, also known as the eSIM/Embedded SIM (eUICC).
  • It has the same functionality as a removable SIM and measures 6 mm in length and 5 mm in breadth. It is soldered onto a device’s motherboard at the point of manufacturing.
  • It is capable of M2M (Machine to Machine) and remote provisioning.


The embedded Universal Integrated Circuit Card (eUICC), also known as the eSIM/Embedded SIM and measuring just 6 mm in length and 5 mm in breadth, is a smaller version of the removable SIM that is soldered onto the motherboard of a device at the point of manufacture. It is capable of M2M (Machine to Machine) and remote provisioning. The eSIM will soon become a GSMA standard and be found in other top-tier smartphones from Apple and Samsung, swiftly followed by the others.

When activating and managing our phones, the eSIM standard’s Remote Provisioning features give us a better customer experience. We can choose our operator and the package we want through the phone’s settings, and that’s all there is to it.

Future devices should be less expensive to produce thanks to the eSIM, which is another consumer advantage we’ve heard mentioned. Naturally, passing on the cost savings to customers is a completely separate matter, and it might not even take place.

INTERNET OF THINGS primarily focuses on phones, but it would be negligent of us to overlook the other gadgets that could gain from eSIMs. especially since phones are the primary means by which we “activate” and control those gadgets.

It’s predicted that the Internet of Things devices will surpass mobile phones to become the biggest connect category within the next few years.

The eSIM makes it possible for new types of devices to function with less compromise in addition to assisting these connected devices. What if the Apple Watch Series 3 with Cellular and the Samsung Gear S3 frontier LTE had to physically accept a SIM card? If they had been larger, Additionally, with a worse battery life?

An eSIM has advantages across many categories, not just wearables. With the inclusion of an eSIM by automotive manufacturers, we can easily connect our cars to cellular.

The addition of the eSIM will help laptops while giving brands and re-sellers the chance to up-sell and cross-sell through the use of flexible data bundles.


The eSIM is the way of the future, but it won’t happen immediately. Your phone still has a physical SIM if you look down at it right now, and it will continue to need one whether you sell it, give it to your children, or other family members. Since only Google Project Fi presently uses the eSIM in the Google Pixel 2 and Google Pixel 2 XL, there is a physical Nano-SIM card tray for all other operators.

What is certain, however, is that it won’t be another 27 years before the physical SIM card is finally relegated to history, given the time it will take makers to include eSIMs as standard, operator adoption, and the lifecycle of current devices.