A primary function of a SIM card is to
A)Control a cell phone's memory
B)Track the power usage of the phone
C)Identify the subscriber to the phone network
D)Display user information during a call

Question

Quizplus · Accepted Answer

A SIM card is a small chip that identifies the subscriber to the phone network. It contains unique identification information, such as a subscriber's phone number, contact lists, and other data required for the phone network to recognize and authenticate the phone user. The SIM card can be removed from one phone and inserted into another, allowing the user to use the same phone number on different devices. SIM cards do not control a cell phone's memory or track power usage, and they do not display user information during a call.

A Primary Function of a SIM Card Is to