eSIM
An eSIM is a SIM built into the device as a chip, which stores a mobile plan that is downloaded digitally instead of a plastic card being inserted.
On this page 3 sections
An eSIM, short for embedded SIM, is a SIM chip fixed inside a device. A normal SIM is a small plastic card that you insert in a tray. An eSIM does the same job without a card. The design follows a common standard from the GSMA, the body of mobile operators, so many brands use it.
How it works
The chip starts empty. A mobile operator sends a digital profile to the device, usually through a QR code or an operator app. The profile holds the phone number and the plan details. A device can store more than one profile, but usually only one or two are active at a time. An eSIM can work next to a physical SIM, which is how many phones offer dual SIM.
What it does not promise
- An eSIM is not a faster connection. Network speed depends on the operator and the coverage in the area.
- It does not work with every operator. The operator must support eSIM on that device.
- It does not remove the need for a plan, because the profile still comes from an operator.
- Moving a profile to another device normally needs the operator, not just a button on the phone.
What it changes
A device can be made without a SIM tray, which leaves room inside for other parts and helps with sealing against dust and water.