The operating system on an iPhone, along with its associated files, requires space for proper function. This allocated space accommodates system files, pre-installed applications, and essential processes. The size of this allocation can vary depending on the iPhone model and the specific version of the operating system installed.
The storage occupied by the operating system is essential for device security, stability, and performance. It enables the iPhone to manage resources, run applications, and provide a user interface. Periodic updates to the operating system often include new features and security patches, which can affect the amount of space required.