An eSIM is the digital version of a physical SIM built into some smartphones, especially the latest releases. It works like an ordinary SIM card, allowing you to make and receive calls. You can also use it to send texts and access the internet.
Instead of inserting a new SIM into a smartphone, you scan a QR code to add a profile from your mobile network carrier. You can find smartphones with eSIMs that can hold multiple profiles for easy network switching.
This article will explore the eSIM technology and how it differs from ordinary SIM cards, and much more!
Definition of eSIM: what it is and how it differs from physical SIM
Mobile network subscribers are switching to eSIMs to avoid attackers who have exploited Microsoft Teams and other threats, as they offer a more secure way to connect to a mobile network. This technology is different from the physical SIM cards in the following aspects:
- Form factor: An eSIM is a small chip soldered onto the motherboard of your smartphone. It stores all the network access credentials needed to identify you to a mobile network on the motherboard.
- Mobile network activation: A physical SIM card requires you to swap it out to connect to a new network carrier. eSIM can store multiple profiles from your preferred carriers without having to eject your SIM card tray. You’ll scan a QR code to add the profiles and toggle on the profile you want to use at the moment.
- Security: Since the eSIM chip is soldered onto your motherboard, it can’t be stolen, unlike a physical SIM. It is more secure since it can’t be stolen or damaged. You can secure it with a strong password to ensure nobody uses your plan.
How eSIMs impact device identity and connectivity
Switching to an eSIM has many benefits, such as giving you connectivity in places beyond your country’s borders. However, you’ll need an international carrier like the Holafly eSIM plan for Japan to connect to mobile networks across many countries.
Besides giving you connectivity anywhere, eSIM technology benefits you in the following ways:
- Separating your identity from a physical card: The plastic SIM card contains your subscriber identity, which can be stolen and used against you if stolen. An eSIM stores IMSI, which is your identity, on the smartphone’s motherboard, making it hard to steal for identity.
- Easy mobile network switching: You may download multiple carrier profiles to your eSIM. This allows you to switch to a new network by toggling on the correct eSIM profile without inserting a new physical SIM.
- Global network connectivity: Your eSIM chip can store any carrier profile if the network operator supports eSIM technology. As a result, you can travel to any country and add a local eSIM profile to your smartphone. You’ll then access the internet at local data plans, thereby reducing travel expenses.
Security benefits and risks associated with eSIM technology
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The latest smartphones want to ensure you are safe while connecting with friends. One of the features you can expect in Android 16 is the mobile network security, which notifies you of unencrypted connections to mobile networks.
eSIM technology secures your smartphone further by eliminating possible vulnerabilities that can be exploited. This is a reason enough you want to switch to an eSIM for calls, SMS, and access to the internet.
eSIM Benefits
- Tamper-proof: eSIM can’t be swapped out or stolen for use in another smartphone, as it’s embedded into the motherboard.
- Anti-SIM cloning: Your eSIM profile is controlled via remote provisioning. You can ask your carrier to disable your profile over the air if you lose your device.
- Secure information: Your subscriber identity information is stored inside the eSIM chip. But what makes this information more secure is that the chip is a secure element (SE) that can’t be separated from your mobile device.
eSIM Risks
- Vulnerable to phishing: Your carrier must have a secure system to safeguard the verification of identity. However, your mobile network system might experience a data breach, which can give advanced hackers access to your subscriber identity information.
- Difficulty contacting emergency responses: A physical SIM is easy to swap out and insert in any mobile device, and call for help. On the other hand, an eSIM can make calling for help difficult if your battery dries out.
Real-world use-cases where eSIM improves security (e.g., travel, remote work)
eSIM has become the go-to way if you want to connect to nearby cell towers and use your device for mobile network connectivity. It allows you to use your smartphone in the following ways:
- Travel: eSIM can be your travel companion as it gives you access to the internet. You can use your internet connectivity to power Google Maps and translation apps. Additionally, it allows you to book accommodation and find restaurants within your budget.
- Remote work: Completing remote tasks and submitting them halfway around the world is a hallmark of digital nomads. Many eSIM carriers offer unlimited data plans for continuous access to the internet, allowing you to complete remote tasks.
- Communication: It is also possible to rely on eSIM to connect with friends back home as you explore a particular destination. A local eSIM profile allows you to make calls and receive texts. International carriers, on the other hand, allocate data plans for powering messaging apps like WhatsApp and Messenger.
Best practices when adopting an eSIM provider (what to ask, what to check)
Selecting the best eSIM provider from the many options on the market can be intimidating when it doesn’t have to be. Ensure you consider the following when adopting one eSIM provider:
- Data privacy: All eSIM carriers handle user data and store it in their systems. Check if your preferred eSIM carrier complies with SGP.22/SGP.32 standards as set by GSMA.
- Network coverage: The best eSIM carrier also provides network coverage in a geographical region. You can travel abroad and explore an entire region with a single eSIM carrier.
- Compatible devices: Besides a smartphone, an eSIM can be placed in tablets and IoT modules. Select an eSIM carrier that supports all smart communication devices, like smartphones and IoT modules.