eSIM vs Physical SIM: Differences, Benefits & More


Written by: Circles.Life

Last updated: 19 February 2024

Key highlights

● eSIM technology eliminates the need for physical SIM cards, offering the ability to switch between plans and networks seamlessly without the physical limitations of traditional SIMs.

● eSIM benefits include the capacity for multiple profiles, allowing users to store up to five virtual SIM cards on one device, making it ideal for travellers and those needing to switch networks frequently.

● Enhanced device design and functionality with eSIMs, as the absence of a physical SIM card tray allows for a more compact device design, potentially larger battery life, and compatibility with modern smartwatches.

Decoding the Future of Connectivity: eSIM vs Physical SIM

Two primary technologies are powering most smartphones today: physical SIM and eSIM. You are most likely very familiar with physical SIM cards – since we’ve been using them for at least the last two decades.

The main function of a SIM card is to connect your account information (such as your phone number) to your wireless provider’s network, enabling you to make calls and stay connected. In this article, we’ll explore their similarities and differences to help you decide if it’s worth the switch.

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A Brief History of SIM Cards

Since its invention in 1991, the physical SIM card has dramatically shrunk in size and you’ve most likely come across the various versions, including Standard-SIM, Micro-SIM, and Nano-SIM.

Physical SIM

Physical SIM cards slide into a tray in your phone and are generally locked into a single network. The function of SIM cards is fairly straightforward. The card possesses an International Mobile Subscriber Identifier (IMSI) that connects the hardware in your phone to the network and proves that you are indeed a subscriber (or customer) of the network.


As SIM technology evolves, we now have the eSIM (embedded SIM), which works similarly to your traditional SIM card, minus the physical component. This means that you no longer have to deal with inserting a physical card into your phone, which could be lost, stolen, or damaged.

One of the single biggest advantages of the eSIM is that it can support multiple profiles, allowing you to easily change plans and switch operators depending on your unique situation.

Read more: What is an eSIM and is it for me?

Physical SIM vs eSIM

Both physical SIM and eSIM serve the same purpose – connecting you with the network you’re subscribed to as a customer. While eSIM typically beats a physical SIM when it comes to a direct comparison of features, let us take a look at their pros and cons below.

Physical SIM


● Versatility: Compatible with many older and alternative mobile phones. This provides more options when purchasing a new phone.
● Emergency utility: In case your phone's battery dies, you can simply slot your SIM card into another device.
● Diagnostics: Removing and exchanging with other SIM cards can help determine the source of connectivity issues.


● Security concerns: Vulnerable to hacking from skilled cybercriminals. If compromised, SIM cards can reveal personal data like name, email, phone number, bank details, and contacts.
● Physical vulnerabilities: Prone to being lost, damaged, or stolen due to their tangible nature.

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● Quick and easy switching: Enables seamless transition between plans and mobile networks.
● No physical access needed: No need for SIM 'ejector tools', SIM adapters, or waiting for your new network provider to send you the physical SIM. Learn more about Circles.Life eSIM plans and compatible devices.
● Multiple profiles: Store up to five virtual SIM cards on a single eSIM, facilitating quick switches between different networks.
● Space saving: Removes the need for a physical SIM card tray, allowing for additional phone features, compact design, or improved battery life.
● Smartwatch compatibility: Many modern smartwatches are designed for eSIMs.
● Great for travel: With eSIM, switching between carriers or plans is just a few taps away - no more fumbling between different SIM cards! Find out why digital nomads are making the switch.


● Phone switching: Transferring to another device isn't as straightforward as moving a physical SIM.
● Privacy concerns: If you are concerned about being tracked by a repressive government, you can't simply dispose of an eSIM to hide your location.

Switch to Circles.Life eSIM in minutes!

Tech Spotlight: Dual SIM and 5G

Wrapped up in this whole discussion of eSIMs and physical SIMs is the new dual SIM 5G technology. Simply put, Dual-SIM 5G is the ability to use two 5G SIMs in one phone, allowing you to connect to multiple 5G networks without physically changing your SIM card. While very few phones currently support this technology, it is definitely a feature to watch for.

Upgrade your mobile experience with Circles.Life award-winning 5G.

Final Thoughts: Which is Better for you?

Choosing between eSIMs and physical SIMs depends on your device compatibility, travel habits, and personal preferences.

While eSIMs offer flexibility, compactness, and enhanced security, many consumers are more familiar and comfortable with the traditional physical SIM cards, which are also supported by a broader range of phones. Some may also hesitate to transition to newer technology. Nonetheless, switching to a Circles.Life data plan is a breeze.

Explore our unbeatable deals and eSIM options now!





Published 2023-10-19

Written by Circles.Life


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