What is stored on sim card?

A SIM card, which stands for Subscriber Identity Module card, is a small removable card that is used in GSM (Global System for Mobile Communications) phones to store subscriber information, such as phone numbers, contacts, and text messages. It also contains information that identifies the subscriber to the mobile network, such as the IMSI (International Mobile Subscriber Identity) number.

Additionally, SIM cards can store a limited amount of data, such as text messages, contact information, and network-specific information. Some SIM cards also have the capability to store photos, videos, and other multimedia files, although the storage capacity for these types of files is often limited.

It is important to note that while some data is stored on the SIM card itself, the majority of data, such as photos, videos, and apps, is stored on the phone's internal storage or external memory card. The SIM card mainly functions to authenticate the subscriber to the network and provide access to network services.