What Is an eSIM Card? eSIM vs. Physical SIM, How To’s & More

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What is a SIM card?

 a close-up image of a small SIM card, the essential component in mobile devices for network connectivity

Explore the tiny powerhouse within your phone – the SIM card, connecting you to the digital world.

A SIM card, short for Subscriber Identity Module, is a small chip that is used in mobile devices to connect to a cellular network. It stores essential information such as the user’s phone number, network access details, and other security keys.

When inserted into a compatible mobile device, the SIM card enables the user to make and receive phone calls, send text messages, and access mobile data services. It essentially acts as an identification card for the device, allowing it to communicate with the network and authenticate the user’s identity.

Traditional SIM cards come in different sizes, while the physical appearance removable sim cards may vary, their purpose remains the same. These cards are provided by the mobile network operators and are usually pre-installed in new devices. However, they can also be easily replaced or transferred to another device in case of an upgrade or change of equipment.

Difference between an eSIM vs a physical SIM

An eSIM, or embedded SIM, is a digital SIM card that is built directly into a device. In contrast, a physical SIM card is a removable card that is inserted into a gadget to connect it to a mobile network. This means that you don’t need to physically handle or swap out the traditional SIM card even when switching a mobile network or traveling internationally. The key difference between the two lies in their physical form and functionality.

What can eSIMs do?

eSIMs, short for embedded SIMs, revolutionize the way we connect to cellular networks. These tiny chips, permanently soldered into devices during manufacturing, offer a range of capabilities that enhance the user experience.

One of the most significant features of eSIMs is their ability to store multiple network profiles simultaneously more than one sim only. This means that with just one device, users can switch between different mobile carriers or plans without the need to physically change a SIM card. This flexibility proves particularly useful for travelers who no longer need to acquire a local SIM card in each country they visit.

Moreover, eSIMs also offer added convenience when it comes to signing up for a new data plan. With traditional SIM cards, users need to physically go to a store or order a plastic SIM card online and wait for it to arrive.

However, eSIMs streamline this process by allowing users to sign up for a new plan directly from their mobile device, without the need for a physical card. This seamless activation process saves time and simplifies the setup for users, allowing them to get connected to a mobile network, almost instantaneously.

Furthermore, eSIMs provide the flexibility to switch plans or carriers with just a few taps on the device, providing a level of freedom and control over one’s cellular connectivity service plans that was previously not possible.

Advantages and downsides of using eSIM cards

Benefits of using eSIM include convenience and flexibility. With an eSIM, you no longer need to physically swap out SIM cards when switching between devices or networks. This is especially useful for frequent travelers or those who use multiple devices.

Additionally, eSIMs can store multiple profiles, allowing you to easily switch between different phone numbers or data plans without the need for additional physical SIM cards. This can be particularly advantageous for individuals who need separate lines for both personal calls and business use.

Moreover, the smaller size of eSIMs compared to physical SIM cards allows for sleeker and more compact gadget designs.

However, there are also a few downsides to consider when using eSIM. Firstly, not all devices and networks support eSIM technology yet, limiting its availability.

Additionally, while physical SIM cards can be easily removed or swapped out, eSIMs require a more complicated process for activation and configuration. This can be a barrier for some users who prefer a simpler setup.

Furthermore, in case of a damaged or lost gadget, recovering or transferring an eSIM profile may present some challenges compared to a physical SIM card that can be easily inserted into a new gadget.

Which devices support eSIM?

An array of IoT devices, from smart cameras to fitness trackers, embracing eSIM technology for seamless communication

Beyond smartphones: Explore the Internet of Things as countless devices adopt eSIM, enhancing connectivity in the digital landscape.

Not all devices are equipped with eSIM technology, but its availability is steadily increasing in newer models. Major smartphone manufacturers such as Apple, Samsung, Google, and Motorola have started incorporating eSIM capabilities into their devices.

In addition to smartphones, other devices such as tablets, smartwatches, and laptops are also starting to adopt eSIM technology. For example, the latest iPad Pro models, Apple Watch Series 3 and newer, and some Microsoft Surface Pro and Surface Go models come with eSIM capabilities. This means that you can conveniently connect these devices to cellular networks without the need for a physical SIM card.

With the increasing availability of eSIM support across various devices, it’s worth exploring if your current or future devices offer this feature, as it can provide flexibility and convenience in managing your cellular connections.

Which cell phones support eSIM?

Apple iPhones:

Apple has been at the forefront of eSIM adoption, and most of their recent iPhone models support eSIM functionality. Starting from iPhone XS, iPhone XS Max, and iPhone XR, all the way up to the latest iPhone 15 series, users can enjoy the benefits of eSIM technology. This enables them to use two different phone numbers simultaneously or switch phone calls between carriers effortlessly.

Google Pixel:

Google’s Pixel series is another popular choice for eSIM enthusiasts. Starting from Pixel 2, all the way up to the latest Pixel 6 and Pixel 6 Pro, these smartphones offer eSIM support. Users can easily activate eSIMs from various carriers and enjoy the convenience of having multiple phone numbers on a single device.

Samsung Galaxy:

Samsung has also embraced eSIM technology in its flagship Galaxy series. Models such as the Galaxy S21, S21+, S21 Ultra, and the Galaxy Z Fold 3 support eSIM functionality. Users can activate eSIMs from their preferred carriers and enjoy the benefits of a dual SIM setup without the need for a third physical SIM card slot anywhere.


Motorola has joined the eSIM bandwagon with some of its recent smartphone releases. Models like the Motorola Razr 5G and the Motorola Edge+ offer eSIM support, allowing users to enjoy the convenience of a digital SIM card.

Other Brands:

Apart from the aforementioned brands, several other smartphone manufacturers have started incorporating eSIM technology into their devices. Some notable mentions include OnePlus, Huawei, and Xiaomi. It’s always recommended to check the specifications of the device makers and specific model you are interested in to ensure eSIM compatibility

With the continued advancements in eSIM technology and the growing demand for flexible connectivity options, it is expected that more smartphone models across various brands will start adopting eSIM capabilities in the near future.

How can eSIMs benefit me?

Person enjoying flexible connectivity on a smartphone with eSIM capabilities

Freedom in your hands: Experience the convenience of eSIM, unlocking flexible connectivity on your smartphone.

eSIM technology offers several benefits for users, making it a convenient and efficient choice.

Firstly, eSIMs eliminate the need for physical SIM cards, allowing users to switch between carriers and plans with ease. This flexibility means that if you travel frequently or need to use different phone numbers for work and personal purposes, you no longer have to worry about swapping out plastic SIM cards or carrying multiple devices. With an eSIM, you can simply activate a new plan or carrier profile on your device, saving time and hassle.

Moreover, eSIMs can also help save space in your device. As traditional SIM cards require a physical sim card slot in your mobile phone, or tablet, the absence of a physical SIM card means that manufacturers can opt for a sleeker and more compact design. This enables devices to have additional space for other components or a larger battery, enhancing overall performance.

Additionally, eSIMs can also make it easier to switch devices. Instead of physically transferring your SIM card from one device to another, you can simply activate your eSIM on the new phone or tablet, ensuring a seamless transition.

Overall, eSIMs offer increased convenience, flexibility, and device optimization for users.

How to manually activate an eSIM on Android?

To manually activate an eSIM on Android, you can follow a few simple steps.

First, locate the settings app on your device and tap on it to open.

Then, scroll down and find the “Network & Internet” or “Connections” option, and select it.

Look for the “SIM card & mobile networks” or similar menu, and click on it. Here, you should see an option for “Add mobile network” or “Add carrier.”

Tap on this, and you will be prompted to scan a QR code or enter the activation details provided by your carrier.

Follow the instructions on the screen, and once the process is complete, your eSIM will be activated, and you can start enjoying the benefits of using eSIM technology.

How to manually activate an eSIM on iOS?

In order to manually activate an eSIM on iOS, you’ll need to take a slightly different approach.

Start by opening the settings app on your iPhone.

Scroll down and tap on “Cellular” or “Mobile Data.”

On the next screen, you will see an option for “Add Cellular Plan.”

Tap on this, and you will be prompted to scan a QR code or enter the activation details provided by your carrier’s network here.

Follow the instructions on the screen, and once the process is complete, your eSIM will be activated, and you can start using it alongside any existing physical SIM cards you may have.


– How does an eSIM work?

An eSIM works by storing the necessary SIM card information, such as carrier credentials and phone number, directly on the device’s embedded chip. Users can activate or switch carriers by downloading the carrier’s profile onto the eSIM.

– Can I use eSIM and physical SIM cards simultaneously?

Yes, some devices support dual SIM functionality, allowing users to use both an eSIM and a physical SIM card simultaneously. This feature enables users to have two different phone numbers or use wireless service from different carriers on the same device.

– Can I switch carriers with an eSIM?

Yes, one of the advantages of eSIM technology is the ability to switch carriers easily. You can deactivate the current carrier’s profile on your phone and activate a new carrier’s profile by scanning a QR code or entering an activation code provided by the new carrier.

– Can I use eSIM for international roaming?

Yes, eSIMs are particularly useful for international travelers. Instead of swapping physical SIM cards, you can simply activate a local carrier’s profile on your eSIM while abroad, allowing you to use a local data plan, as well as to make and receive calls without incurring high roaming costs.

– Can I transfer my eSIM to a new device?

In most cases, eSIMs are tied to a specific device. If you switch to a new device, you will need to contact your carrier to transfer the eSIM profile to the new gadget or obtain a new eSIM activation for the new device.

– Is eSIM secure?

Yes, eSIM technology is designed with security in mind. The embedded SIM chip uses encryption and authentication protocols to protect your information. Additionally, eSIMs can be remotely managed and deactivated in case of loss or theft embedded SIM cards.

– Does an eSIM cost more than a physical SIM card?

Most providers charge no extra fee to provide eSIM with a standard SIM card. eSIM cards can be cheaper as a user does not have the cost of manufacture. It also means avoiding packaging is marginally more environmentally friendly.

How can I reinstall a deleted eSIM or reinstall an existing eSIM in my new phone?

If you delete your eSIM from YOverse or lose your device, you cannot reinstall it, so if you plan to buy another plan at a later date, you will need to pay the activation fee of $0.70 Euro (which covers your eSIM for 1 year) again and reinstall a new eSIM.

How can I delete an eSIM from my phone?

If you wish, you can manually remove your eSIM. To remove your eSIM follow these steps:

Go to Settings

  • Tap Mobile data or Mobile data

    • Tap your mobile plan

    • Tap “Remove mobile plan”

If you remove your eSIM you will no longer be able to connect through this line. Any contacts you have associated with this line will default to your preferred line.

How can I allow data switching between my plans? [Advanced users]

To allow your phone to automatically select which SIM to use data from based on coverage and availability, turn on “Allow mobile data switching” in your settings. Note that if you are roaming and only want to use your YOverse eSIM or data, you should then make sure that “Allow mobile data switching” is turned off. If “Allow mobile data switching” is turned on, your phone will automatically use data from both phone plans, depending on which network is strongest at any given moment. This option is best for people who want to stay connected no matter what. There is no way to know which plan is being used at any given time, however, so this option can consume data quickly if you are not aware of it. To turn on Allow mobile data switching, follow these steps (steps may vary depending on phone model):

  • Go to Settings

  • Tap either Cellular or Mobile Data.

  • Tap Mobile Data.

    • Turn on Allow Mobile Data Switching

Your data line automatically switches for the duration of your call. Mobile data switching will not work if you are currently roaming and both eSIMs are not set to allow data roaming. Check with your provider for availability and to find out if additional charges apply.

How do I see how much data is left on my plan?

You are able to see it in the application in the “My eSIM” bubble; click on the data plan under “Active Data Plans” to view its remaining data. Once your data runs out, you will no longer have an internet connection without Wi-Fi.

Uliana Aitakayeva


Uliana Aitakayeva is a tech-savvy traveler with a deep understanding of eSIM technology. As a telecom engineer, she offers practical advice on using eSIMs worldwide. Her posts focus on cost-effective strategies, carrier insights, and regional tips. When not traveling, Uliana enjoys photography and exploring local cuisines.