ios
n. uncountablen. the software that runs on Apple mobile devices like the iPhone and iPad. It controls how the screen looks and how your apps work.
n. a proprietary mobile operating system developed by Apple Inc. exclusively for its hardware. It serves as the primary interface and resource manager for iPhones and related mobile devices.
I need to update my iOS to get the latest features.
The developer spent weeks ensuring the new mobile application was fully compatible with the latest version of iOS.
While Android offers greater customisation for power users, iOS is often praised for its consistent user interface and the tight integration between its hardware and software components.
Usually written with a lowercase 'i' and uppercase 'OS', even at the beginning of a sentence in technical contexts.