Determining the operating system version installed on an iPhone or iPad is a fundamental troubleshooting step. This process reveals compatibility with applications and system updates, aiding in identifying potential issues. For example, verifying the system software version is crucial before downloading a new application that requires a specific operating system.
Knowing the installed operating system enables users to access appropriate support resources and resolve problems effectively. This information also provides insight into device age and potential performance limitations, offering historical context regarding software updates released for the particular device. Security updates are also strongly associated with iOS version, and knowing this provides context for system security.