One of the first examples of a home screen can be found on the PalmPilot, which debuted in 1997. Early home screens were often less customizable than current iterations. For example, early versions of iOS did not allow users to rearrange applications on the home screen or change the background image. Because home screens often serve as the main method for interacting with mobile operating systems, they tend to change slowly, if at all, across updates to the operating system.