eSIM Explained: What It Is and How eSIM Works
Nov
Imagine landing in a new country and instantly connecting to the internet – no queues at airport kiosks, no overpriced roaming fees, and no more juggling tiny SIM cards. That’s the power of eSIM. In this guide, we’ll break down what an eSIM is and how eSIM works on both iPhone and Android. From setup to benefits, you’ll discover why more and more travelers are switching to eSIM.
What is an eSIM?
An eSIM is a digital SIM card that is integrated into your iPhone, meaning there’s no requirement for a physical SIM card to be inserted. This modern technology allows users to easily switch between multiple SIMs without any hassle, as well as manage a variety of eSIMs-up to eight or even more-simultaneously. You can activate new mobile plans through digital means, which enhances the overall user experience. With eSIM technology, you benefit from increased adaptability, added convenience, improved security measures, and uninterrupted connectivity, particularly beneficial when traveling to different countries.
How eSIM works (Step-by-step explained)
In contrast to conventional plastic SIM cards, eSIMs have the ability to be reprogrammed at any moment. They are composed of software that is installed onto a built-in microchip within your mobile device (the “e” signifies “embedded”). They serve a function similar to that of traditional SIM cards, enabling your device to connect to a mobile network, make voice calls, send text messages, and access the internet.
Their attractiveness primarily stems from their digital features: the microchip can “store” multiple eSIM profiles, data plans, and phone numbers, eliminating the necessity of possessing various SIM cards for different locations and mobile service providers. This is particularly beneficial for individuals who have spent considerable time searching their homes for a lost SIM card.
Read more: Travel eSIM for Beginners: How to Get Started
eSIM vs. physical SIM: Key differences
The primary distinction between an eSIM and a traditional SIM card is that the eSIM is integrated within the device and is not detachable or exchangeable like a standard SIM card. Below are additional important differences.
|
Feature |
Physical SIM Card |
eSIM (Embedded SIM) |
| Form Factor | A small, removable plastic card inserted into a SIM tray. | An embedded chip built directly into the device’s motherboard. |
| Activation | Requires manual insertion and often carrier support. | Activated digitally via QR code or mobile app — no card needed. |
| Switching Carriers | Requires obtaining and inserting a new physical SIM card. | Instantly switch by downloading new carrier profiles remotely. |
| Multiple Carriers | Limited to dual-SIM phones with two trays. | Can store multiple profiles, allowing easy switching between networks. |
| Device Space | Occupies physical space inside the device. | Saves space, enabling slimmer designs or extra features. |
| Security | Can be lost, cloned, or stolen with the device. | More secure as it’s integrated and not easily removed. |
The primary distinction between physical SIM cards and eSIMs is that physical SIMs are small, removable cards, whereas eSIMs are integrated directly into the device’s hardware and can be configured remotely, eliminating the need for card replacement. This feature enhances the convenience of eSIMs for changing service providers and handling multiple phone numbers on one device. Both types of them have their unique advantages, disadvantages, and specific situations where they are most effective.
Device Compatibility: How eSIM Works on iPhone and Android
Having discussed the definition of an eSIM, we can now explore its functionality. An eSIM can be likened to a digital SIM card. It is a programmable chip that enables you to download data while on the move. There is no need to search for a SIM provider or handle a physical card to switch your carrier or data plan. Rather, you can buy and download an eSIM data plan, allowing you to connect to a mobile network immediately.
How eSIM Works on iPhone
- Access Settings.
- Select Cellular
- Find and select the Add eSIM option.
- Opt for the Use QR Code method.
- Scan your QR code and follow the instructions to finalize the setup.
How eSIM Work on Android
- Access Settings.
- Open the Connections section.
- Find and select the SIM Manager option.
- Choose Add eSIM, then select Scan QR code.
- Scan your QR code and follow the instructions to complete the setup.
Once the setup is completed, you will gain a mobile network connection in the specified country almost immediately. eSIMs represent the latest advancement in communication technology. Embrace this change to stay connected during your travels or for everyday use.
Why Use an eSIM? 6 Benefits That Change the Way You Travel
There’s no doubt that eSIMs make communication effortless. With providers like Twise, all you need to do is choose a plan, scan a QR code, and connect instantly to a local or regional network. No need to hunt for SIM card kiosks at the airport – your phone is ready to go the moment you land.
This convenience is one of many reasons eSIMs have become the preferred solution for frequent travelers. Beyond simplicity, replacing physical SIM cards with eSIMs also allows phone makers to design slimmer, more compact devices.
Here are the 6 main benefits of using an eSIM instead of a physical SIM when traveling:
- Instant Activation
Activate your plan remotely before or after you arrive at your destination. With how eSIM works, you’re online in minutes – no waiting, no store visits.
- Flexibility Across Borders
Switch between local, regional, or global Twise eSIM plans depending on your travel itinerary. This means you can avoid the hassle of swapping SIM cards in every new country.
- Lower Costs Than Roaming
International roaming is notoriously expensive. Twise eSIM plans are far more affordable, helping you stay connected without surprise fees.
- Dual-SIM Advantage
Keep your home number on your physical SIM while using an eSIM for data. This way, you can still receive text from overseas while enjoying cheap data abroad. - Secure and Eco-Friendly
Unlike a physical SIM, your eSIM can’t be lost or stolen. Plus, going digital reduces plastic waste and packaging, making it a greener choice.
- Seamless Global Connectivity
Whether you’re traveling through Europe, Asia, or multiple regions, a single Twise eSIM plan keeps you connected across 190+ destinations without interruptions.
With these benefits, it’s clear why travelers are switching. Twise eSIM plans provide instant activation, flexibility, and reliable coverage across 190+ destinations, making them the perfect companion for modern explorers.
Get Started With eSIM From Twise
Ready to experience seamless connectivity wherever you travel? With Twise eSIM, you can activate your plan in just a few taps – no physical SIM, no roaming hassles, and no wasted time at local stores.
Choose from flexible local, regional, and global eSIM plans designed for iPhone and Android users. Whether it’s a short trip or long-term travel, Twise keeps you connected with reliable coverage in 190+ destinations.
Get started with Twise eSIM today and stay connected anytime, anywhere.
