Well before smartphones were conceived, we were used to the existence of SIM. The name which in full means Subscriber Identity Module and has accompanied all our experiences with mobile telephony. Over the years, like everything, the concept of SIM has also evolved.
In recent years we have seen the eSIM, the so-called virtual SIMs of which we have spoken on several occasions. ESIMs are now an established point of mobile telephony, to the point that now all new high-end smartphones support them. But there is one on the horizon Announcements.
This is called iSIM which stands for Integrated SIM and expresses a whole new concept of SIM. In this article, we will go to see what iSIM consists of what are the differences between eSIMs and classic SIMs, e how they will be used in the next future.
What are iSIMs
As introduced above, iSIM means Integrated SIM and now let’s go and see what exactly is the SIM integrated into the new generation.
ISIMs were explored by a collaborative project conducted by Vodafone, Qualcomm, and Thales and consisted of SIM modules directly integrated into the processors of mobile devices.
We can therefore think that iSIMs will be SIMs integrated into our processor’s smartphone. This means that they will no longer require the presence of any component capable of recognizing, reading, and managing the SIM or eSIM.
How iSIMs work
First of all, it must be clear that today iSIM technology could be used. The GSMA has already released regulatory standards according to which devices with iSIM support must operate.
The image that you find below is very significant and shows the benefit, in terms of size, of the use of the iSIM. Let’s see how, even compared to the latest generation eSIMs, the iSIM support modules inside the processors occupy minimal space.
The structure of an iSIM provides for integration within the processor of the device and consists of one trusted zone that is, in a secure hardware area protected from external attacks that can lead to tampering with its functioning.
All the resources required for its operation are delegated to the processor itself.
The iSIMs are therefore compatible fully with networks 3G, 4G, and 5G and with a significant amount of devices such as smartphone, smartwatch, PC, and notebook, tablets.
What are the differences with eSIM and classic SIM?
The substantial difference between eSIMs and classic SIMs consists precisely of the hardware structure. ISIMs are built inside the and they are not external modules that communicate with the device motherboard. Compared to eSIMs, although iSIMs are also virtual SIMs, they consist of the fact that iSIM they do not need a second chip to work, as is the case with eSIMs.
This translates into the possibility of optimizing space available for device manufacturers, perhaps by allocating more space to a more performing battery. Another advantage of iSIM is the greater energy efficiency since the device will not have to manage two different chips but only one.
Where we will use the iSIM
As mentioned above, iSIMs are compatible with a large number of devices. Therefore, it will be possible to establish mobile connectivity on even more devices compared to what is not already done with eSIMs.
Manufacturers will be able to use iSIMs without having to worry about dimensional encumbrance And energy intake as it is necessary to do now with classic SIMs and eSIMs. Therefore, we can expect iSIM support on smartphones, tablets, PCs, smartwatches, home automation devices, and more.
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Abram left his e-business studies to devote himself to his entrepreneurial projects. In 2017, he created the company Inbound Media and wrote articles about high-tech products for his Chromebookeur site. In 2019, Chromebookeur was renamed Macbound and became a general purchasing advice site. Today, Abram manages the development and growth of Macbound, surrounded by a young and talented team.