Call features are functionalities that enhance the experience of making and receiving phone calls. Common features include caller ID, which displays the name and number of the incoming caller, and call waiting, allowing users to receive a second call while already on a call. Other features may include voicemail, which records messages when a call is not answered, and call forwarding, which redirects calls to another number. These features can vary by service provider and device, but they generally aim to improve communication efficiency. Additional options like conference calling enable multiple participants to join a single call, while call blocking helps users avoid unwanted calls.