What does a SIM card typically store?

A SIM card, or Subscriber Identity Module, primarily stores subscriber identity and authentication data. This includes important information such as the International Mobile Subscriber Identity (IMSI), which helps identify and authenticate the user on the mobile network. The SIM card facilitates secure communication by recognizing the device on the network, enabling services like voice calls, texting, and mobile data.

In addition to identity information, the SIM can store certain contacts and text messages, but its main function revolves around its role in managing the user's connection and security on the telecommunications network. This understanding highlights the critical role of the SIM card in maintaining secure access to mobile services.

Other options like chargers and cables, or battery health information, are unrelated to the function of a SIM card. Likewise, while images and videos can be stored on a phone, they are not stored on a SIM card; instead, they are typically saved on the device's internal memory or an external storage card.