what is e sim : Subscriber identity module
what is e sim : Subscriber identity module
- An eSIM is a SIM card that is embedded in the mobile device.
- A SIM card is a small card that contains a mobile network subscriber’s account information.
- The SIM stores all information that is necessary to identify and authenticate the mobile subscriber.
An eSIM will come in the form of an integrated SIM chip that cannot and need not be removed from a device. The eSIM is sometimes called an eUICC (embedded Universal Circuit Card).
The information on the eSIM will be compliant and rewritable by all operators. The identification information can be updated over the air, to enable a change of operator. A new SIM will no longer be required.
The driver for eSIM comes from the difficulty to change a SIM card in M2M devices, such as smart meters. However, it will also be used in mobile user equipment.
One of the first manufacturers that started to use an eSIM was Apple. The Apple SIM was introduces in iPads in the United States.
Why eSIM?
The eSIM is positive for environmental reasons as it would minimize the discard of SIM cards.
It would also increase consumer freedom, and lower cost, when it comes to:
- Using a local operator when traveling or relocating to another country.
- Switching to a carrier with a better deal and/or coverage.
- Changing phone without the hassle of cutting a SIM card.
- Using the same SIM for different types of devices, not having to decide in advance if you want it for your smartphone, watch or alarm system.
