An eSIM card ,or embedded SIM, does not have physical form like a traditional SIM card, but it still contains important information necessary for mobile connectivity. The key information stored on an eSIM card includes:

IMSI (International Mobile Subscriber Identity): This unique identification number is assigned to each eSIM and serves the same purpose as on a physical SIM card. It identifies the eSIM and links it to the mobile network.

Profile Information: An eSIM can store multiple mobile network profiles. Each profile includes the necessary information to connect to a specific mobile network, such as the network name, authentication keys, and network access codes.

Authentication Keys: Similar to a physical SIM card, an eSIM stores authentication keys required to verify the identity of the device and establish secure communication with the mobile network.

Operator-specific Information: The eSIM may also contain operator-specific information, such as network-specific settings, preferred roaming partners, and access point names (APNs) for data connectivity.

Device Information: Some eSIM cards can store device-specific information, such as the device's unique identifier or hardware capabilities. This information can be used for device identification and configuration purposes.

It's important to note that the specific information stored on an eSIM card can vary depending on the device and mobile network operator. The eSIM is typically managed and provisioned through the device's settings or a mobile network operator's app, allowing users to download and activate different mobile network profiles as needed.