Estimated reading time: 9 minutes
Most likely, you have seen a SIM card, located within your phone, that tells it the carrier and phone number you use. Originally about the size of a postage stamp, SIMs have been getting smaller over time as manufacturers free up more internal room for other circuitry in their devices. These SIMs are now going digital (or “e”), transferring your data from a static, detachable chip to an embedded, reprogrammable one.
Embedded subscriber identity module (eSIM) is a chip that is integrated into your phone. It performs all of the functions of a conventional SIM card. You can simultaneously have two phone numbers and install eight or more eSIMs on supported devices.
It is a unique code that cannot be taken out and transferred to another phone or tablet. eSIMs are growing in popularity as technology develops. They enhance user experience and are ideal for tasks like utilizing your phone overseas.
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How the eSIM Trend Began
Smartphones, tablets, smartwatches, and even certain automobiles may use eSIMs! The “Internet of Things” sector contributed to the initial push for eSIM. eSIMs can be included in devices where size is crucial, such as drones, wearables, sensors, and position trackers, because they are small and don’t require additional space for a slot.
Moreover, they can be soldered into industrial equipment that might not have easy access to a SIM card. eSIMs can be controlled in large quantities since they can be remotely reprogrammed. For example, a corporation with 50,000 vending machines can easily change its provider or service plan from its headquarters.
Advantages of Using eSIM
There are reasons more and more people are turning towards eSIMs. Let’s explore some major ones.
More Control Over Service Plans
You have far more control over how you manage your service plans with cell phones thanks to eSIMs. Whether you require a separate work line or are roaming overseas, you can add a second plan to an eSIM device. With a few swipes and touches, you can switch providers.
Moreover, it enables corporate device managers to remotely modify the service plans on thousands of lines simultaneously. If properly designed, it’s a powerfully pro-consumer feature.
Simplified Network Switching
If your network is compatible, switching networks is now easier than ever. With eSIM, you can use software to switch your data, service package, or wireless carrier. An app from the majority of providers may instantly install network information onto an eSIM. Or you can quickly do so by visiting a menu or snapping a picture of a QR code.
You don’t have to wait for the mail, visit a store, or tinker with a little chip. The transition only takes a few minutes. Just be advised that not all networks are eSIM compatible.
Easy Carrier Testing
eSIMs make the process of testing several carriers effortless. Before committing, customers can test out the networks and services offered by several carriers through their free eSIM trials. Installing an app and configuring the experience from there might be all that is required.
Dual-SIM Convenience
You can have two lines on many eSIM phones, one of which is a physical SIM. In the US, dual-SIM phones have never been very popular, but eSIM has altered everything. You can utilize two numbers on a single phone by simultaneously using the eSIM and SIM slots on several phones.
Smooth International Travel
You don’t need to order a SIM card to switch networks momentarily. Are you visiting a foreign place and your carrier does not provide a good international plan? Instead of searching for a physical SIM card, you can simply set up an eSIM line. It depends on where you’re going, as many nations have restricted eSIM support.
Eco-Friendly Solution
They are more environmentally friendly. There is minimal waste because there are no plastic cards or delivery materials. Given how frequently SIM cards are used and discarded, this waste can accumulate over time.
Enhanced Security
An eSIM is also more secure because it is incorporated. The eSIM card of a phone is far more difficult to clone. In case your phone is stolen, the burglar may have already removed the SIM card to avoid detection. This gives them time to reset the device. Although it is impossible to remove the inbuilt eSIM, a determined thief will undoubtedly figure out a way to reset the phone. Positively, you have a little more time to perhaps locate your device.
eSIM Drawbacks
Like anything digital, eSIMs come with their own set of flaws. Let’s take a look at some of the major issues that have been reported.
Problems in Switching Devices
Switching between devices is more difficult with eSIMs because you can’t just replace the physical card. Previously, all you had to do was remove the SIM card and insert it into another compatible gadget. Installing an app or directly entering eSIM instructions are now your options. Deactivating the current device is another requirement.
Although the entire process is still quite quick, real SIM cards are still far more practical in this situation.
No Physical Backup

Losing a physical backup is another major problem of eSIM technology. If your phone is misplaced, broken, or experiencing malfunctions, you cannot just take out the eSIM and put it into another device like you could with a regular SIM card. For individuals who depend on their phones for communication, navigation, and access to necessary services, this restriction may result in prolonged periods without connectivity.
Set-Up Complexities
The eSIM activation process is much more vexing and unpleasant than the conventional SIM card. The setup process may be made difficult by differences in national network laws or documentation requirements. Different networks and service providers may have different activation procedures, making the process confusing and tough to navigate.
Limited Support
All three of the major US carriers, as well as a few MVNOs like Mint Mobile, Google Fi Wireless, and Telo, support eSIM. However, many networks, particularly smaller MVNOs, do not support eSIM. The support also varies based on the nation you are in.
Only popular phones like the iPhone, Samsung Galaxy, and Pixel series are compatible with eSIM from many carriers. Though not all phones enable it, more manufacturers are beginning to incorporate eSIM.
How to Set Up Your eSIM
After purchasing an eSIM plan, you just need to do a brief setup to begin using your eSIM. There’s no need to take out your SIM card, as you can continue to use it as well without any problems.
We have broken down the steps you need to follow separately for iOS and Android users.
For iPhone:
- Open “Settings.”
- Choose “Cellular data” or “Mobile data.”
- Select “Add cellular plan.”
- Choose “Enter information manually” towards the bottom of your iPhone screen.
- Paste the eSIM details shared by your provider.
For Android:
- First, make sure that your Android phone supports eSIM technology. There are online guides available to help you out.
- Open “Settings.”
- Select “Network & Internet” or “Connections.”
- Choose “Mobile network” or “SIM card manager.”
- Here you will find an option to add an eSIM.
- You can choose between scanning a QR code and entering an activation code.
- Follow the on-screen instructions available to complete the setup.
Tips for Beginners
For those who are utilizing an eSIM for the first time, the following advice may be helpful.
Verify Compatibility
Make sure your device supports eSIMs before configuring them. Older models may not support eSIM, but many of the more recent smartphones, tablets, and smartwatches do.
Comply With the Activation Guidelines
Entering an activation code that your carrier has issued or scanning a QR code are the usual methods for activating an eSIM. To finish the setup, be sure to carefully follow the instructions.
Manage Multiple Profiles
You can use one eSIM profile for work or travel and another for personal use if your device supports multiple profiles. You can use this function to move between profiles for data, calls, and texts without actually switching SIM cards.
Address Activation Problems
Try rebooting your smartphone if your eSIM doesn’t work immediately. To fix activation issues, see the carrier’s troubleshooting manual or get in touch with customer service if the signal is still absent.
Make an eSIM Profile Backup
If your device permits it, think about backing up your eSIM profile in case something goes wrong. Certain phones have cloud backup features that make it simple to restore your eSIM in an emergency. For speedy reactivation, keep your activation code close at hand.
eSIM Availability
All iPhones since the iPhone X support eSIM. US-bound iPhone 14 and iPhone 15 support eSIM exclusively. Similarly, Google Pixel 6, 7, and 8, and Fold series phones support eSIM, along with the Samsung Galaxy S21, S22, S23, and Z Fold/Flip 3, 4, and 5 lines. Devices that are popular overseas, such as Redmi, Oppo, Honor, Huawei, Realme, and Xiaomi, also offer eSIM support.
Apple’s iPads provide an amazing eSIM interface. You can simply pick your provider and plan from the device menu. Samsung’s Galaxy Tab S9 5G also provides eSIM support. Some laptops from HP, Samsung, Lenovo, and Microsoft offer eSIM support. However, Apple laptops do not provide that feature yet.
AT&T, T-Mobile, and Verizon, the three major US carriers, all support eSIM. Their respective MVNOs do, too, including Visible, Cricket, and Metro. Many roaming-focused carriers also provide eSIM options, such as GigSky, Ubigi, and Truphone.
The Future is Now!
eSIM is transforming the way we connect, offering more flexibility, convenience, and control than ever before. As the world becomes more digital, eSIM is leading the way for smarter, more efficient technology. Whether you’re switching carriers, traveling, or managing multiple numbers, eSIM is simplifying it all. It’s clear that eSIM is not just a trend; it’s the future of communication. Get ready to experience a new level of convenience, wherever you go and whatever you do!
Visit Inside Tech World today for more insightful articles on how to enhance your mobile experience and make the most of the latest advancements in eSIM technology!
FAQs
What is an eSIM?
An eSIM is an embedded SIM card that’s built into your device, allowing you to connect to a network without needing a physical SIM card.
How many eSIMs can I use?
On supported devices, you can install up to 8 or more eSIMs, allowing you to switch between multiple plans or carriers.
Can I transfer an eSIM to another phone?
No, eSIMs are embedded and cannot be physically removed or transferred to another phone.
Is eSIM available worldwide?
eSIM is growing in popularity, but not all countries or carriers support it yet. It’s essential to check compatibility before switching.
How do I switch my carrier with an eSIM?
You can easily switch carriers or plans by scanning a QR code or using an app. This cuts the need for physical SIM swaps or store visits.