iPhone firmware, also known as iOS, is the operating system that runs on all Apple iPhones. It controls the phone’s hardware and software, and it provides the user interface that you see on the screen. Keeping your iPhone’s firmware up to date is important for security, performance, and access to the latest features. There are two ways to check your iPhone’s firmware version: through the Settings app or by connecting your phone to a computer and using iTunes.
To check your iPhone’s firmware version through the Settings app, open the Settings app and tap on “General.” Then, tap on “Software Update.” The current version of iOS will be displayed at the top of the screen. If there is an update available, you can tap on “Download and Install” to update your phone.