iSIM Explained
- Updated: March 15, 2023 | Published: March 3, 2023
If you have ever used a mobile phone, you probably know what a SIM card is. It is a small device that stores your network credentials and identity and allows you to connect to a cellular network and make calls, send messages, access data, etc.
However, did you know that there are different types of SIM cards? And that the future of SIM cards may not even involve a physical card at all?
In this article, we will explain what iSIM is and how it works.
What is iSIM?
iSIM stands for Integrated Subscriber Identity Module. It is a new technology that integrates the SIM card directly into the phone’s main processor. This means that instead of having a separate SIM card slot or chip in your phone, you will have the SIM card’s functions built into a secure part of the phone’s chipset.
A SIM card is a small device that stores your network credentials and identity. It allows you to connect to a cellular network and make calls, send messages, access data, etc. A traditional SIM card is removable and can be inserted into different devices. However, it also takes up space and can be lost or damaged.
An eSIM (embedded SIM) is a newer form of SIM card that is built into the device and cannot be removed. It offers more flexibility and convenience than a traditional SIM card because you can switch between different network operators and plans without needing to physically change or insert a SIM card. However, an eSIM still requires a separate processor within the phone to store and manage your network credentials and identity.
An iSIM (integrated SIM) is the newest form of SIM card that is integrated directly into the phone’s processor. It does not require a separate processor or chip for storing and managing your network credentials and identity. Instead, it uses a secure enclave within the phone’s System on Chip (SoC) to do so. The SoC is the component that integrates essential parts of your phone such as CPU, GPU, RAM, mobile radio, and more into a single chip.
How does iSIM work?
iSIM works by using a secure enclave within the phone’s SoC to store and manage your network credentials and identity. The secure enclave is a tamper-resistant element (TRE) that protects your data from hackers or malware. It also prevents unauthorized access to your phone by locking it if someone tries to tamper with it.
With iSIM, you can switch between different network operators and plans without needing to physically change or insert a SIM card. You can also use multiple numbers on one device with iSIM. To do so, you need to scan a QR code or download an app from your chosen network operator. This will activate your iSIM profile on your device.
What are the benefits of iSIM?
Space-saving
iSIM eliminates the need for a separate SIM card slot or chip in your phone, which frees up more space for other components or features such as larger batteries, cameras, sensors, etc.
Security
Flexibility
Cost efficiency
When will an iSIM iPhone arrive?
There is no official confirmation from Apple about when they will launch an iPhone with iSIM technology. However, some rumors suggest that Apple may introduce iSIM in its future iPhones as early as 20241.
Apple has already adopted eSIM technology in some of its devices such as iPhone XS, XR, 11, 12, SE (2020), iPad Pro (2018), iPad Air (2020), Apple Watch Series 3 and later. Therefore, it is possible that Apple will eventually move to iSIM technology as well.
Final Thought
How To Order an eSIM
Compare eSIMs
Compare and find the most suitable travel eSIM for your needs and purchase it directly with the provider.
Receive eSIM via email/app
You will receive the eSIM profile within a few minutes in a separate e-mail or you can directly access it in the provider’s app.
Install eSIM
Scan the eSIM QR code in the mail with the camera function of your smartphone and follow the instructions on the screen. The profile will be set up automatically.
Free roaming abroad
You can now use the eSIM abroad!
Why Choose an eSIM?
Sustainable
The eSIM works digitally only, so fewer resources are used than with the classic SIM card.
Digital
The new eSIM can easily be digitally uploaded to your smartphone. It’s quick and saves the environment.
Fast Installation
Your eSIM profile is sent easily and conveniently by email. This means you will receive your digital eSIM much faster than a physical SIM Card by post.
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