What is an eSIM? Everything You Need to Know About the Future of SIM Cards
What is an eSIM?
An eSIM stands for an Embedded Subscriber Identity Module. It is a digital SIM that is built directly into your device hardware during the manufacturing process. Unlike a traditional SIM card that you slide into a tray, an eSIM is a small chip soldered onto the motherboard of your phone. It performs the exact same function as a physical SIM by storing the information your phone needs to connect to a mobile network, but the internal data is completely rewritable. This allows you to change your carrier or data plan through software settings rather than swapping physical hardware.
Key Benefits of Using an eSIM
Instant Connectivity
The primary advantage of this technology is the speed of activation. You no longer need to wait for a SIM card to arrive in the mail or visit a retail store to get connected. With an eSIM, you can purchase a plan online and activate it instantly using a QR code or a carrier app.
Efficient International Travel
Travelers no longer need to find a local kiosk at the airport or pay expensive roaming fees. You can download a travel eSIM before you even leave your home. This allows you to keep your primary number active for important calls and texts while using a local eSIM for affordable high-speed data.
Multiple Profiles on One Device
Most modern smartphones allow you to store multiple eSIM profiles on a single chip. While you usually only use one or two lines at the same time, you can toggle between different profiles in your settings. This is ideal for individuals who need to manage separate work and personal numbers without carrying two different phones.
Enhanced Device Security
Because an eSIM is embedded inside the device, it cannot be physically removed or stolen. If your phone is lost or stolen, a thief cannot remove the SIM to prevent you from tracking the device. As long as the phone remains on, it stays connected to the network, which makes recovery services far more effective.
Which Devices Support eSIM?
Most flagship smartphones released since 2019 support eSIM technology. This includes the iPhone XS and all newer models, including the iPhone 14 and newer which are eSIM-only in the United States. Samsung users can find this feature on the Galaxy S20 series and all subsequent flagship releases. Google has also included eSIM support in every Pixel model since the Pixel 3. To verify if your specific device is compatible, you can check your settings for an EID number.
How to Activate an eSIM
The activation process varies slightly by carrier, but the general steps are relatively uniform across all platforms. First, you must purchase a plan from your mobile provider. Your carrier will then provide a QR code via email or their official website. On an iPhone, you navigate to the cellular section of your settings to add an eSIM. On an Android device, you go to the network and internet settings to add a new connection. Once you scan the code, your phone will download the profile and connect to the network within a few minutes.